Showing papers by "Cabot Corporation published in 1995"

Chemical mechanical polishing slurry for metal layers

Abstract: A slurry for use in chemical-mechanical polishing of a metal layer comprising high purity fine metal oxide particles uniformly dispersed in a stable aqueous medium.

Non-aqueous inks and coatings containing modified carbon products

Abstract: Aqueous ink compositions are described which include a modified carbon product comprising a carbon having attached at least one organic group that is substituted with an ionic or an ionizable group. A coating composition is also described and comprises water, a binder, and a modified carbon product having at least one organic group attached to carbon wherein the organic group is substituted with an ionic or an ionizable group.

Ink jet ink formulations containing modified carbon products

Abstract: There is disclosed an aqueous ink jet ink composition comprising an aqueous vehicle and a modified carbon product containing carbon having attached at least one organic group. The organic group comprises a) at least one aromatic group and b) at least one ionic group, at least one ionizable group, or a mixture of an ionic group and an ionizable group. The organic group having an aromatic group is directly attached to the carbon by the aromatic group. The organic group may comprise a) at least one C1-C12 alkyl group and b) at least one ionic group, at least one ionizable group, or a mixture of an ionic group and an ionizable group. Ink jet recording methods applying an ink jet ink of the present invention are also described.

Carbon black products for coloring mineral binders

Abstract: A mineral binder composition having incorporated therein a carbon black product comprising a carbon black having attached an organic group containing an ionic or an ionizable group.

Carbon black reacted with diazonium salts and products

Abstract: Processes for preparing a carbon black product having an organic group attached to the carbon black. In one process at least one diazonium salt reacts with a carbon black in the absence of an externally applied electric current sufficient to reduce the diazonium salt. In another process at least one diazonium salt reacts with a carbon black in a protic reaction medium. Carbon black products which may be prepared according to process of the invention are described as well as uses of such carbon black products in plastic compositions, rubber compositions, paper compositions, and textile compositions.

Epdm, hnbr and butyl rubber compositions containing carbon black products

Abstract: A rubber composition prepared by the process comprising mixing 100 parts by weight of a rubber selected from EPDM, HNBR, and butyl rubber, and 10 to 300 parts by weight of a carbon black product having an attached organic group. The organic group has the formula -Ar-Sn-Ar'- in which Ar and Ar' are arylene groups or -Ar-Sn-Ar' in which Ar is an arylene group, Ar' is an aryl group and n is 1 to 8.

Flaked tantalum powder and method of using same flaked tantalum powder

Abstract: An improved flaked tantalum powder and process for making the flaked powder are disclosed. The powder is characterized by having a Scott density greater than about 13 g/in 3 and preferably at least about 90% of the flake particles having no dimension greater than about 55 micrometers. Agglomerates of the flaked tantalum powder, provide improved flowability, green strength and pressing characteristics compared to conventional flaked tantalum powders. The improved flaked tantalum powder can be made by preparing a flaked tantalum and then reducing the flake size until a Scott density greater than about 18 g/in 3 is achieved. The invention also provides pellets and capacitors prepared from the above-described flaked tantalum powder.

Powders and products of tantalum, niobium and their alloys

Abstract: A powder of tantalum, niobium, or an alloy thereof, having an oxygen content less than about 300 ppm, and the production thereof without exposure to a temperature greater than about 0.7 TH. A powder metallurgy formed product of tantalum, niobium, or an alloy thereof, having an oxygen content less than about 300 ppm, and the production thereof without exposure to a temperature greater than about 0.7 TH.

Elastomeric compounds incorporating silicon-treated carbon blacks and coupling agents

Abstract: Disclosed are elastomeric compounds including an elastomer and a silicon-treated carbon black, and optionally including a coupling agent. The elastomeric compound exhibits poorer abrasion resistance, lower hysterisis at high temperature and comparable or increased hysterisis at low temperature compared to an elastomer containing an untreated carbon black. Elastomeric compounds incorporating an elastomer and an oxidized, silicon-treated carbon black are also disclosed. Also disclosed is method for preparing elastomers compounded with the treated carbon black.

Surface modified silica

Abstract: A novel and improved surfactant modified silica and method for making the same. The surfactant modified silica is characterized as a fumed silica having a surfactant material treated therewith. Also disclosed is process of thickening aqueous systems which includes the addition of an effective amount of a fumed silica having a surfactant material treated therewith.

Process for preparing aerogels

Abstract: The invention concerns a process for preparing modified SiO2 gels, in which the gel is aged with a solution of an alkyl and/or arylorthosilicate capable of condensation or with an aqueous silicic acid solution in order to reinforce the network.

Ceramic slip composition and method for making the same

Abstract: A uniform suspension of ceramic powder and method for making the same The suspension is prepared by mixing finely divided ceramic powder in an aqueous carrier fluid, combining with a dispersing agent, and alternatively, an organic binder when forming a slip The ceramic powder has an average particle size of about 05 micron or less and is present in the suspension in a loading of up to 30% by volume of the total solids in suspension A passivating agent is present in the carrier fluid in an amount of 05 to 5% by weight of the ceramic powder present for suspension and slip respectively After the addition of a dispersant, the suspension has a Bingham yield point of less than 230 dynes/cm 2 and an apparent viscosity of less than 3000 cps A green layer produced from the slip exhibits a pore size of less than 05 micron

Method for producing carbon black

Abstract: A process for producing carbon blacks having lower surface area and structure wherein steam is introduced into the combustion gas stream at a point located a distance “L” from the point of introduction of feedstock into the combustion gas stream such that the ratio L/D ranges from 0 to less than 1.0, where “D” is the diameter of the zone of the reactor at the point of introduction of feedstock.

Preparation and use of pelletized submicron pigment powder/polymer compositions

Abstract: This disclosure relates to a process for preparing co-pelletized submicron pigment powder/polymer pellets in a dry drum pelletizing process using a thermoplastic polymer as seed pellets. Also disclosed is a process for using the co-pelletized product either for formation of masterbatch or for directly introducing at least one pigment into thermoplastic media.

Process for preparation of xerogels

Abstract: of EP0690023Xerogels are manufactured from a soln. of water glass brought to pH <= 3 with an acid ion exchange resin or a mineral acid. The silicic acid obtained is polycondensed to a SiO2 gel by the addn. of a base. If mineral acid was used in the 1st step, the gel is washed free of electrolyte with H2O. Water is removed from the gel by extractive distillation with an organic solvent that forms an azeotrope that separates into 2 phases on cooling. The water content is reduced to <= 5 wt.%. The resulting gel is dried at below the critical temp. and below the critical pressure of the organic solvent used for extractive distillation. aU

Nonwoven fabric-aerogel composite material containing two-component fibres, a method of producing said material and the use thereof

Abstract: The invention concerns a composite material comprising at least one layer of nonwoven fabric and aerogel particles and characterised by the fact that the nonwoven fabric contains at least one two-component fibre material which has regions of low melting point and regions of high melting point, the fibres of the fabric being connected both to the aerogel particles and to one another via the low-melting point regions of the fibre material. The invention also concerns a process for producing the material and the use of it.

Carbon materials reacted with diazonium salts

Abstract: Processes for preparing a carbon product having an organic group attached to a carbon material. The carbon material is selected from graphite powder, a graphite fiber, a carbon fiber, a carbon cloth, a vitreous carbon product, and an activated carbon product. In one process at least one diazonium salt reacts with a carbon material in the absence of an externally applied electric current sufficient to reduce the diazonium salt. In another process at least one diazonium salt reacts with a carbon material in a protic reaction medium.

Densified carbon black adsorbent and a process for adsorbing a gas with such an adsorbent

Abstract: The present invention discloses an adsorbent comprising a densified carbon black. The densified carbon black comprising the adsorbent preferably has an increase in density of from about 100% to about 500% above the undensified form of the adsorbent. The densified carbon black adsorbent has an increase in adsorption capacity per unit volume over the undensified form of the adsorbent in excess of 100%. The densified carbon blacks are particularly useful as adsorbents for gases.

Composite material containing aerogel, process for manufacturing said material and the use thereof

Abstract: The invention concerns a composite material containing a quantity of aerogel particles equivalent to 10-95 % by volume, the particle diameters being less than 0.5 mm, and a layered silicate as an inorganic matrix material.

Epdm compositions and process for producing same

Abstract: Disclosed are foamable EPDM compositions comprising EPDM, a carbon black having a CTAB of about 50 to 60 m2/g and DBP of 90 to 115cc/100g and a blowing agent which are advantageous for use in applications where UHF microwave curing is utilized and for replacing foamable EPDM compositions incorporating similar amounts of conventional blends of carbon blacks. Also disclosed are foamed, cured EPDM compositions comprising: EPDM and a carbon black having a CTAB of about 50 to 60 m2/g and DBP of 90 to 115cc/100g which have advantageously lower sponge density and lower sponge compression set than EPDM compositions incorporating similar amounts of conventional low reinforcing carbon blacks. Further disclosed is a process for producing the foamed, cured EPDM compositions of the present invention. Additionally disclosed is use of the foamed, cured EPDM compositions of the present invention as weatherstripping.

Latex compositions and films produced therefrom

Abstract: Natural latex rubber compositions and films produced therefrom having reduced extractable protein levels and, as such, are less attributable to allergic sensitivities. The natural latex rubber compositions also have improved tear strength while minimizing effect on modulus. The compositions include a natural rubber latex, and stable aqueous dispersions of fumed silica.

Dispersible carbon black pellets

Abstract: The disclosure relates to carbon black pellets containing 10 to less than 50 weight % organic compound, formed by agglomerating a carbon black with an organic compound having specified characteristics. Also disclosed is the use of such pellets as a masterbatch or a concentrate.

Verfahren zur herstellung organofunktionalisierter aerogele

Abstract: Die Erfindung betrifft ein Verfahren zur Herstellung von organofunktionell modifizierten Aerogelen, wobei man ein Wasserglas durch Polykondensation vergelt und anschliesend durch Trocknen unter Erhalt der Gelstruktur zu einem Aerogel umsetzt, dadurch gekennzeichnet, das man das Gel vor dem Trocknen mit einer mindestens bifunktionellen organischen Verbindung zur Reaktion bringt, wobei mindestens eine funktionelle Gruppe zur Anknupfung an das Aerogel dient, wahrend die ubrigen erhalten bleiben, Aerogele, die nach dem erfindungsgemasen Verfahren erhaltlich sind, sowie deren Verwendung.

Treated carbonaceous compositions and polymer compositions containing the same

Abstract: Treated carbonaceous compositions comprising a carbonaceous material, preferably a carbon black, and an ester polymer treating agent Also disclosed are polymer compositions incorporating the treated carbonaceous compositions and articles of manufacture formed from the polymer compositions

Foam laminates, process for their preparation and their use

Abstract: Die Erfindung betrifft einen Verbundschaumstoff, enthaltend 10 bis 90 Vol.-% SiO₂-Aerogel-Partikel und 90 bis 10 Vol.-% eines Schaums, vorzugsweise eines Polyurethan- und/oder Polyolefinschaums, ein Verfahren zu seiner Herstellung sowie seine Verwendung. The invention relates to a composite foam containing 10 to 90 vol .-% SiO₂ airgel particles and 90 to 10 vol .-% of a foam, preferably a polyurethane and / or polyolefin foam, a process for its preparation and its use.

Low permeabilitly rubber compositions

Abstract: Rubber compositions having reduced permeability to gases comprising rubber and specified furnace carbon blacks.

Gel composition containing carbonaceous compound

Abstract: New gel compositions which comprise a carbonaceous component attached to a gel component. Preferably, the carbonaceous component is selected from the group consisting of: carbon blacks, carbon fibers, activated carbons and graphitic carbons; and the gel component is selected from the group consisting of: metal oxide gels and polymeric gels. Also disclosed are new gel compositions comprising: a gel component and a carbon black product having attached at least one organic group, the organic group comprising: a) at least one aromatic group, and b) at least one ionic group, at least one ionizable group, or a mixture of an ionic group and an ionizable group, wherein at least one aromatic group of the organic group is directly attached to the carbon black. Further disclosed are new gel compositions comprising: a gel component and a carbon black product having attached at least one organic group, the organic group comprising: a) at least one C1-C12alkyl group, and b) at least one ionic group, at least one ionizable group, or a mixture of an ionic group and an ionizable group, wherein at least one alkyl group of the organic group is directly attached to the carbon black. Uses for the gel compositions are also disclosed.