Showing papers on "Alicyclic compound published in 1996"

Resist material and resist pattern forming method

Abstract: PROBLEM TO BE SOLVED: To obtain a resist material having high transmittance to various radioactive rays including excimer laser and superior dry etching resistance and suppressing cracking at the time of development and the peeling of a pattern by incorporating a specified acidsensitive compd. and an acid generating agent which generates an acid when exposed with radiation. SOLUTION: This resist material contains an acid-sensitive compd. contg. structural units each having an alkali-soluble group protected with a part contg. an alicyclic hydrocarbon group represented by formula I, II, etc., and an acid generating agent which generates an acid when exposed with radiation. The alkali-soluble group is released by the generated acid and makes the acid- sensitive compd. alkali-soluble. In the formulae I, II, each of R1 and R11 is optionally substd. straight chain or branched chain 1-4C alkyl, Z is plural atoms required to complete alicyclic hydrocarbon in combination with C and at least one of R11 's is alicyclic hydrocarbon.

Method for treating amyloidosis

Abstract: Therapeutic compounds and methods for inhibiting amyloid deposition in a subject, whatever its clinical setting, are described. Amyloid deposition is inhibited by the administration to a subject of an effective amount of a therapeutic compound comprising an anionic group and a carrier molecule, or a pharmaceutically acceptable salt thereof, such that an interaction between an amyloidogenic protein and a basement membrane constituent is inhibited. Preferred anionic groups are sulfonates and sulfates. Preferred carrier molecules include carbohydrates, polymers, peptides, peptide derivatives, aliphatic groups, alicyclic groups, heterocyclic groups, aromatic groups and combinations thereof.

Ultraviolet-curing coating composition for cans

Abstract: There is disclosed an ultraviolet-curing coating composition for cans comprising (A) 10-85 parts by weight of a compound having alicyclic epoxy group(s) in the molecule, (B) 5-60 parts by weight of a compound having an oxetane ring of a specific structure, (C) 5-60 parts by weight of a compound having an oxetane ring and hydroxyl group in the molecule, (D) 5-60 parts by weight of a compound having either at least two oxetane rings or oxetane ring(s) and epoxy group(s) in the molecule, and (E) 0.01-20 parts by weight of a cation-polymerization initiator, which generates a cation when irradiated with ultraviolet rays, per 100 parts by weight of the total amount of the compounds (A), (B), (C) and (D); and a process for producing a coated metal can by coating this coating composition and curing by irradiation with ultraviolet rays. This ultraviolet-curing coating composition can form a coating film which is excellent in processability, adhesivity, hardness, hardness in hot water, and coating film appearance such as levelling property.

Coating composition forming wear-resistant coat and article covered with the coat

Abstract: A coating composition forming a abrasion resistant coating comprising (A) an ultraviolet-curable silicone prepared by chemically modifying particulate colloidal silica with a specific silane compound, (B) a monomer mixture comprising a (meth)acrylate having a specific isocyanate skeleton and a urethane poly(meth)acrylate having an alicyclic skeleton, and (C) a photo-polymerization initiator. By using a urethane poly(meth)acrylate having an alicyclic skeleton as part of the component (B) and the component (A) having an enhanced reactivity of chemical modification, the compatibility of the component (A) with the component (B) is improved to give a cured coating with excellent wear resistance, weather resistance and durability.

Preferred conformation of peptides rich in alicyclic Cα,α-disubstituted glycines

Abstract: The conformational preferences of the alicyclic Cα,α-disubstituted glycines Acnc (1-amino-1-cycloalkane-carboxylic acid; n = 4, 7, 9, 12) were assessed in selected model compounds, including homopeptides and Ala (or Aib, α-aminoisobutyric acid)/Acnc peptides containing a small total number of residues, by Fourier transform ir absorption, 1H-nmr, and x-ray diffraction analyses. The results obtained indicate that β-turn and 310-helical structures are preferentially adopted by short peptides rich in these cycloaliphatic α-amino acids. © 1997 John Wiley & Sons, Inc. Biopoly 40: 519–522, 1996

Novel aliphatic epoxide hydrolase activities from dematiaceous fungi

Abstract: Epoxide hydrolases were found to be constitutively expressed in dematiaceous fungi coincident with secondary metabolite pigment production in stationary or idiophase. Washed-cell preparations of two fungi, Ulocladium atrum CMC 3280 and Zopfiella karachiensis CMC 3284, exhibited affinity for 2,2-dialkylated oxiranes, for which contrasting enantioselectivities were observed, but not for aromatic styrene oxide or alicyclic cyclohexene oxide type substrates. Lyophilised preparations of soluble epoxide hydrolase activities proved to be effective catalysts for the mild hydrolysis of aliphatic epoxides.

Coating articles using radiation-curable powder coatings

Abstract: The invention relates to a process for coating objects using polymer-containing powder coatings which are applied to the surface of the substrate, melted and cross-linked by exposure to UV radiation. The polymers used are copolymers containing the following: (a) at least one monomer of general formula (I) CH2=C(R1)-CO-OR2, in which R1 is H or CH3 and R2 is H, CnH2n+1, n being 1-30, an alicyclic, araliphatic or heterocyclic group or hydroxyalkyl, alkoxyalkyl, glycidyl or aminoalkyl group, or of general formula (II) CH2=C(R1)-CO-NR3R4, in which R1 is H or CH3, R3 and R4 can be identical or different and stand for H, CH2OH or CnH2n+1, n being 1-30, or CH2OR5, R5 being CmH2m+1 and m being 1-12; and (b) at least one copolymerisable ethylenically unsaturated organic compound of general formula (A), in which R' and R'' can be identical or different and stand for H, CpH2p+1, p being 1-6, cycloalkyl, aryl or aralkyl and R''' stands for an acryloyl, methacryloyl, ethacryloyl or cinnamoyl group, this compound being partially replaceable by one or more other copolymerisable ethylenically unsaturated organic compounds different from (a).

Photoresist composition comprising a copolymer of a hydroxystyrene and a (meth)acrylate substituted with an alicyclic ester substituent

Abstract: The present invention relates to an improved chemically amplified photoresist composition comprising (i) a photosensitive acid generator and (ii) a polymer comprising the reaction product of hydroxystyrene with a monomer selected from acrylate or methacrylate having an alicyclic ester substituent.

Epoxy functional siloxanes

Abstract: This invention relates to novel alicyclic epoxy-functional siloxanes. The invention also relates to a method for the preparation of these epoxy-functional siloxanes. The epoxy functional siloxanes of this invention can be added to photocurable compositions which when exposed to ultraviolet radiation will yield a highly releasing, very printable/writable, and highly water-repellent cured film.

Polylactic acid-based resin composition

Abstract: PROBLEM TO BE SOLVED: To obtain a polylactic acid-based resin composition useful as an environment protecting material, etc, excellent in crystallizability, mold release characteristics and biodegradability, capable of shortening the molding cycle, by blending a polylactic acid-based resin with a specific amide-based compound in a prescribed ratio SOLUTION: This composition is obtained by blending (A) 100 ptswt of a polylactic acid-based resin such as poly L-lactide with (B) 001-5 ptswt of one or more amide-based compounds of formula I [R is a 2-30C (un)saturated aliphatic polycarboxylic acid residue, an (un)saturated alicyclic polycarboxylic acid residue or an aromatic polycarboxylic acid residue; R is a 1-18C alkyl, a 2-18C alkenyl, phenyl, etc; (a) is 2-6] or formula II [R is a 3-25C (un)saturated alicuyclic polyamine residue or aromatic polyamine resin; R is R ; (f) is (a)] such as trimesic acid (t-butylamide)

Determination of aliphatic and alicyclic amines in water by gas and liquid chromatography after derivatization by chloroformates.

Abstract: Two new methods were developed for the analysis of aliphatic (n-propylamine, pentylamine, hexylamine, heptylamine, octylamine) and alicyclic (pyrrolidine, morpholine, piperidine, piperazine) amines in water samples after derivatization and liquid-liquid-extraction. The carbamate-derivatives formed were determined by GC/MS (trichloroethyl carbamates) as well as by HPLC/fluorescence detection (9-fluorenylmethyl carbamates) in a concentration range between 0.05 and 1.0 μg/l suitable for drinking water analysis. Applications to German rivers and sewage plants show that both new methods produce corresponding results in analysing aliphatic and alicyclic amines in surface waters as well as in waste water samples.

DC 107 derivatives and treatment methods

Abstract: DC107 derivatives represented by the formula (I): ##STR1## or pharmacologically acceptable slats thereof, wherein R1 is hydrogen, lower alkoxyalkyl, aralkyloxyalkyl, lower alkoxyalkoxyalkyl, lower alkoxyalkoxyalkoxyalkyl, aralkyl, tetrahydropyranyl, COR4 or the like; R2 represents hydrogen or COR5 ; R3 represents lower alkyl, lower alkenyl, aralkyl which may be substituted with substituted or unsubstituted aryl, lower alkoxyalkyl, aralkyloxyalkyl, substituted or unsubstituted aryloxyalkyl, lower alkoxycarbonylalkyl, lower alkanoyloxyalkyl, alicyclic alkanoyloxyalkyl or the like, or bonds to Y to represent a single bond; Y bonds to R3 to represent a single bond, or bonds to Z to represent a single bond; Z represents hydrogen or bonds to Y to represent a single bond; W represents oxygen or NR6, with the proviso that the compound wherein R1, R2 and Z each represents hydrogen, R3 bonds to Y to represent a single bond, and W represents oxygen (DC107) is excluded.!

Synthesis and Properties of a Novel Fluorine-Containing Alicyclic Diepoxide

Abstract: A novel fluorine-containing alicyclic diepoxide resin, the diglycidyl ether of bis(1,1,1,3,3,3-hexafluoropropyl)cyclohexane (CHEP), has been synthesized using benzene, hexafluoroacetone, and epichl...

Synthesis of and hydroformylation with fluoro-substituted bidentate phosphine ligands

Abstract: Hydroformylation of alkenes to aldehydes in the presence of a rhodium complex catalyst is improved by the addition of a novel bidentate ligand of the formula ##STR1## wherein R1, R2, R1 ' and R2 ' are organic radicals selected from alicyclic, aliphatic and aromatic groups of which at least one is preferably substituted with at least one electronegative moiety and the methylene groups are present at the trans-2,3 positions on the norbornane moiety. The invention also provides a novel method for producing the bidentate ligand and novel intermediate phosphine oxide and phosphinous acid compounds.

Enhanced resist compsn. for deep UV exposure and alkaline development

Abstract: Chemically-enhanced resist compsn., which can be developed by alkali, contains an alkali-insol., film-forming cpd. (I) and a photo-acid generator (PAG). (I) has a structural unit contg. an alkali-soluble gp. protected by a gp. that can be released by an acid formed by PAG, so that (I) becomes soluble in alkali. The protected gp. has a lactone pt. of formula (II) and a pt. consisting of or contg. an alicyclic hydrocarbon gp. of formula (III), -C(R11)3 (IV), -C(R-1R1)-O-R11 (V), -C(R111)2-C(R111)=C(R111)2 (VI), -C(R11)2-CH(R11)-CO-R11 (VII) and (VIII). In the formulae, R1 = opt. substd. 1-4 C alkyl; n = 1-4; Z = C atoms completing an alicyclic hydrocarbon gp.; R11 = opt. substd. 1-12 C alkyl or alicyclic hydrocarbyl and at least one R11 gp. = alicyclic hydrocarbyl; R111 = a proton, opt. substd. 1-12 C alkyl or alicyclic hydrocarbyl and at least one R111 = alicyclic hydrocarbyl and at least one of 2 R111 = 1-12 C alkyl or alicyclic hydrocarbyl. Also claimed is a method of making resist masks from the compsn.

Production of aromatic polyamide

Abstract: A process for producing an aromatic polyamide which comprises: (a) a dicarboxylic acid component which consists of 30-100 mol % of terephthalic acid and optionally 0-70 mol % of at least one dicarboxylic acid other than terephthalic acid, and (b) a diamine component which consists of 50-100 mol % of an aliphatic alkylenediamine of 4-25 carbons and optionally 0-50 mol % of at least one alicyclic diamine of 3-25 carbons, said process comprising a first step of performing melt reaction of said dicarboxylic acid with said diamine, thereby giving a low molecular weight condensate having an intrinsic viscosity [η] of 0.05-0.6 dl/g, a second step of subjecting it to solid phase polymerization, thereby giving an aromatic polyamide precursor having an intrinsic viscosity [η] of 0.5-1.0 dl/g, and a third step of subjecting it to melt polymerization, thereby giving an aromatic polyamide having a desired intrinsic viscosity [η] of 0.8-2.5 dl/g. This process permits the industrial production of high molecular weight aromatic polyamides in an economical and efficient manner.

Radiation curable silicone release coating compositions

Abstract: The present invention relates to a radiation curable silicone release coating composition comprising (A) an alicyclic epoxy-functional silicone graft copolymer, (B) an organic compound having at least 2 alicyclic epoxy groups, and (C) a photocuring catalyst. The compositions of this invention are highly adhesive to a variety of substrates, have excellent coatability, and the release resistance values of films having the composition of this invention cured thereon can be adjusted over a wide range of values.

Non-nucleotide phosphorus ester oligomers

Abstract: A phosphorus ester oligomer having structure (I) wherein A can be the same or different in each monomeric unit and each is independently selected from the group consisting of oxygen, sulfur, lower alkyl, alkyl- or aryl-substituted amino and aminoalkyl; B1 and B2 can be the same or different and each is independently selected from hydrogen, lower alkyl, a labelling group, a protecting group, a phosphoramidate or a phosphomonoester; R1 can be the same or different in each monomeric unit, and in at least one of the non-nucleotide monomeric units, R1 is independently selected from the group consisting of a condensation product of (i) a non-vicinal diol attached to a hydrogen bond donor functionality; (ii) a hydrogen bond acceptor selected from an ether, a purine or pyrimidine substituted 1,2-diol or a disubstituted heterocycle; (iii) a non-vicinal diol attached to a hydrophobic functionality or a vicinal diol attached to an aliphatic or alicyclic hydrophobic functionality; (iv) a diol attached to a ring substituted anionic functionality and (v) a cationic moiety attached to a non-vicinal or alicyclic diol, any of which can further include a detectable label, and n is at least one. Preferred R1 moieties include condensation products of heterocyclic diols, alicyclic diols, and polycyclic diols. Also the non-nucleotide monomers thereof, combinatorial library mixtures of the oligomers and the use of the oligomers as selective target-binding compounds.

Resist for alkali development

Abstract: A resist for alkali development, which comprises an alicyclic compound attached with an acidic substituent group exhibiting pKa of 7 to 11 in an aqueous solution of 25° C. This alicyclic compound is preferably a copolymer comprising as a comonomer component a vinyl compound and exhibiting a light absorbency of 3 or less per 1 μm to the light of 193 nm in wavelength.

Heat-resistant lubricating resin composition

Abstract: PROBLEM TO BE SOLVED: To obtain the subject composition moldable by injection molding, having excellent low-friction property and high abrasion resistance and useful for a heat-resistant sliding bearing by adding a tetrafluoroethylene resin and an aromatic polyester resin to a specific thermoplastic polyimide resin SOLUTION: This resin composition is produced by using (A) a thermoplastic polyimide resin of formula I (X is direct bond, a 1-10C hydrocarbon group, hexafluoroisopropylidene group, etc; R1 to R4 are each H, a lower alkyl, a lower alkoxy, etc; Y is a >=2C aliphatic group, an alicyclic group, etc) as a main component and incorporating the main component with (B) 8-38vol% of a tetrafluoroethylene resin and (C) 3-25vol% of an aromatic polyester resin as essential components The composition is preferably further incorporated with (D) 2-20vol% of a para-oriented aromatic polyamide fiber containing the recurring unit of formula II, etc, (E) 2-15vol% of flaky graphite and (F) 5-40vol% of one or more heat-resistant resins selected from polyether ketone resin, polyether imide resin and polyether sulfone resin

Alpha-olefin polymerization catalyst and process for producing alpha-olefin polymer

Abstract: An α-olefin polymerization catalyst which comprises: (A) a solid catalyst component containing a tetra-valent titanium obtained by treating a magnesium compound having an Mg-O bond in its molecule with a titanium halide; (B) an organoaluminum compound; and (C) an organosilicon compound represented by the general formula R1R2Si(OR3)2 wherein R1 represents a hydrocarbon group having 4 to 30 carbon atoms wherein a carbon bonded directly to Si is a tertiary carbon, R2 represents a straight chain hydrocarbon group having 2 to 20 carbon atoms and R3 represents a hydrocarbon group having 1 to 10 carbon atoms, or the general formula R4R5Si(OR6)2 wherein R4 and R5 are hydrocarbon groups having an alicyclic hydrocarbon having 5 carbon atoms as a basic structure, R4 and R5 may be the same or different, and R6 represents a hydrocarbon group having 1 to 10 carbon atoms, and a process for producing α-olefin with said catalyst.

New lower rim calix [4]arene amine derivatives: synthesis, characterisation and acid–base properties. Potential anion and cation binders

Abstract: The synthesis of new lower rim calix[4]arene derivatives containing aliphatic and alicyclic amines is reported. 1H and 13C NMR characterisation shows that in solution these compounds exist in a cone conformation. UV spectrophotometry was used to investigate the interaction of these amines with the proton. These studies reveal that four protons are taken up for each calix[4]arene unit. The acid–base properties of these macrocyclic amines were investigated potentiometrically using methanol as the reaction medium. From these data, the equilibrium constant for each of the dissociation processes involved was derived. Diagrams showing the percentages of the individual species as a function of the solution pH are given. This information is of fundamental importance for investigating the use of these ligands as cation or anion binders. The higher basic character of aliphatic and alicyclic p-tert-butylcalix[4]arene amines relative to pyridinocalix[4]arene is demonstrated. The implication of these results on their affinity for the proton is discussed. Phase-transfer studies on the water–dichloromethane solvent system provide quantitative evidence that the presence of the calix[4]arene amino derivative in the organic phase leads to an 84% extraction of HAuCl4 from aqueous solutions. The 1H NMR spectrum of the gold(III) adduct is very similar to that of the protonated calix[4]arene amine derivative suggesting that the gold(III) containing anion is transferred by this ligand to the organic phase via an ion-pair mechanism involving the protonated ligand and these anions. The attachment of amino functional groups in the lower rim of p-tert-butylcalix[4]arenes provides a suitable arrangement for interaction with toxic metal cations (Cd2+, Pb2+ and Hg2+) while alkali and alkaline metal cations (Na+, K+ and Ba2+) are discriminated. The potential use of these ligands for the removal of toxic metal cations from contaminated sources is emphasised.

Biodegradable sericin-containing polyurethane and its production

Abstract: PURPOSE:To obtain a biodegradable sericin-containing polyurethane excellent in mechanical and thermal properties inexpensively by reacting an organic solvent solution of sericin with a polyisocyanate. CONSTITUTION:An organic solvent solution of sericin (the organic solvent used being tetrahydrofuran, dioxane or the like which may contain a polyether or polyester polyol compound commonly used and being desirably a liquid one) is reacted with a polyisocyanate (including an aliphatic, alicyclic or aromatic polyisocyanate and a modified product thereof). Because the obtained polyurethane contains biodegradable sericin as its segment, it is biodegradable, excellent in mechanical and thermal properties, and used in the form of film, molding, fiber or the like. This polyurethane is cheap because it can be produced by using serine which is a waste product.

Cyanoethylmelamine derivatives and process for producing the same

Abstract: Cyanoethylmelamine derivatives represented by general formula (I) wherein one to five of the substituents X1 to X6 each represents cyanoethyl; at least one remaining substituent represents C?1-20? alkyl, C2-20 alkenyl (the alkyl or alkenyl may have an alicyclic or phenyl group in the structure), C5-6 cycloalkyl, or phenyl, or may be bonded to the substituent bonded to the same nitrogen atom to thereby form a C2-7 alkylene chain; and any remaining substituent represents hydrogen. The derivatives are produced in a high yield by reacting an N-substituted melamine derivative with acrylonitrile or reacting a mono- or dihalogeno-N-substituted triazine derivative with aminopropionitrile. The compounds represented by the above formula are extensively useful as intermediates for various fine chemicals for agricultural chemicals, medicines, dyes, paints, etc., or as intermediates for various cross-linking agents for resins.

Blocked polyisocyanate composition and one-pack thermocuring resin composition comprising the same

Abstract: Disclosed is a blocked polyisocyanate composition comprising: a blocked polyisocyanate obtained by blocking the terminal isocyanate groups of a two or more terminal isocyanate groups-containing polyisocyanate derived from at least one diisocyanate selected from an aliphatic diisocyanate and an alicyclic diisocyanate with a blocking agent comprising at least one active methylene compound selected from a malonic diester and an acetoacetic ester; and a salt of a basic compound with an acidic compound, or a mixture of the salt with the basic compound or the acidic compound, the composition having a pH value of from 1 to 8.5. The blocked polyisocyanate composition of the present invention not only exhibits high stability even under high temperature conditions, but also is capable of maintaining such high stability for a prolonged period of time. The blocked polyisocyanate composition can be combined with a polyol to provide a one-pack thermocuring resin composition which exhibits not only excellent storage stability but also excellent curability even under low temperature conditions, which therefore can be advantageously used as various coating materials, adhesives, sealing agents and the like.

Hybrid rocket propellants containing azo compounds

Abstract: Hybrid rocket propellants are disclosed that contain azo compounds, i.e., compounds containing the group R--N═N--R' as part of their structure, where R and R' represent a variety of groups including aliphatic, alicyclic and heterocyclic groups. The azo compounds are mixed with the other solid components of the propellant grain and serve either as plasticizers, binders, fuels, or fillers. The effect of including the azo compounds is an increase in the regression rate of the grain as the propellant burns.

Polyether polyol for preparing rigid polyurethane foams

Abstract: A polyether polyol is provided having an aromaticity in the range of from 5% to 35%, an average nominal functionality (Fn) in the range of from 2.0 to 4.5 and a hydroxyl value in the range of from 390 to 650 mg KOH/g, whereby the aromatic carbon atoms are contained in structural moieties of the general formula ##STR1## wherein both R1 groups independently represent hydrogen or a C1-C3 alkyl group; both R2 groups independently represent a C1-C3 alkyl group; and n is an integer of from 0 to 3. A further aspect of the disclosure is a process for the preparation of the above polyether polyol, which process comprises reacting an alkylene oxide with a polyhydric alcohol blend comprising a diphenylol alkane precursor of the above indicated structural moiety and at least one aliphatic or alicyclic polyhydric alcohol having a functionality of at least 2.0. A polyether polyol blend is also disclosed, the blend having an aromaticity in the range of from 2 to 10% and a Fn in the range of from 2.5 to 5.0 eq/mole, which blend comprises the above polyether polyol and one or more aliphatic or alicyclic polyether polyols having a Fn of at least 2.5.

Dissolution behavior of alicyclic polymers designed for ArF excimer laser lithography

Abstract: We have analyzed the dissolution rate of alicyclic polymer resists designed for ArF excimer laser lithography with an in-house laser dissolution rate monitor. The analyzed polymers were methacrylate terpolymer with a tricyclodecanyl group and carboxy-tricyclodecanylmethyl methacrylate copolymer which has a polar carboxylic acid in alicyclic groups. We found that the alicyclic polymer dissolution rate was affected very little by developing conditions such as developer concentration or kind of developer. Furthermore, when we measure the dissolution rate as a function of the polar molecule content, we found that the dissolution rate of the alicyclic polymer is similar to that of conventional polyvinylphenol (PVP) polymers. We also demonstrate that the polymer dissolution rate can be predicted from the percolation theory for both conventional PVP polymer and alicyclic polymers. Moreover, the percolation theory can be applied to chemically amplified positive resists while taking the contribution of the protective group to polarity into consideration. These findings should be very useful for theoretical resist design and material development.