The illuminating end communication device is equipped with an illuminating light source An electric power fed to the light source is modulated with a modulating unit responding to transmission data, and the modulated light is sent out as illuminating light The illumination light is received by the light receiving unit of a terminal end communication device to maintain a downlink Light emitted from the light emitting unit of the terminal end communication device is received by the light receiving unit of the illuminating end communication device to keep an uplink Or, illuminating light is modulated on the basis of data when it is reflected, whereby data can be transmitted to the illuminating end communication device It is preferable that illuminating light is reflected by CCR A high-quality communication is realized using illuminating light of high power

Illuminative light communication device

A resin composition for toners which comprises a vinyl copolymer obtained mainly from a styrene monomer and a (meth)acrylic ester monomer, a Fischer/Tropsch wax, and a polystyrene block copolymer, characterized in that the vinyl copolymer has a molecular weight distribution as determined by gel permeation chromatography in which at least two peaks are present respectively in the molecular-weight region of from 5,000 to 20,000 and the region of molecular weights not lower than 500,000, that the wax is contained in an amount of 2 to 10 wt.%, and that the block copolymer is contained in an amount of 0.5 to 5 wt.%; and a toner containing the resin composition.

Resin composition for toner and toner

Polymer particles in a size range between 2 and 15 micrometers, and having a refractive index close to, but not identical with, that of a matrix polymer and optionally having one or more enclosing shells, the outer shell being compatible with the matrix polymer, impart light-diffusing properties to the matrix polymer without degrading its physical properties, while the particles having a closer refractive index match to the matrix polymer impart gloss reduction to the surface of the matrix polymer.

Thermoplastic and thermoset polymer compositions

This invention discloses a dental adhesive composition comprising (A) a polymerizable monomer comprising an acidic-group containing polymerizable monomer such as 11-methacryloyloxy-1,1-undecane dicarboxylic acid, (B) a mixed filler of a spherical filler substantially consisting of a non-crosslinking polymethyl methacrylate and a spherical filler substantially consisting of a non-crosslinking polyethyl methacrylate; and (C) a polymerization initiator; and a dental adhesive kit comprising the above dental adhesive composition in combination with a dental primer comprising (D) an acidic-group containing polymerizable monomer, (E) an aryl borate, (F) an organosulfinic acid salt and (G) water. The dental adhesive composition exhibits good operability and improved adhesion performance.

Dental adhesive composition

A composition of matter composed of a thermoplastic elastomeric hydrocarbon block copolymer having 0.1 to 8 percent polysiloxane, or silicone oil, uniformly distributed throughout. The composition exhibits improved surface, elasticity, and tensile strength characteristics as well as superior processibility. The block copolymer may take the form of styrene-ethylene-butylene-styrene in which the styrene blocks have a molecular weight of 5,000 to 40,000 and the ethylene-butylene block has a molecular weight of 20,000 to 500,000. Uniformly dispersed mineral oil may constitute 10 to 60 percent of the composition's total weight which may also include less than 45 percent polypropylene. Combining the copolymer with the silicone oil occurs under the influence of a pressure of 1,500 to 2,500 p.s.i. such as provided by extrusion blending. The resulting elastomeric composition may extrude in sheets as thin as 0.015, 0.010 or even 0.005 inch, which a puller may thin even further. The resulting composition has a surface smoothness microscopically characteristic of silicone rubber. As one of its many varied uses, the elastomer may find use as an inflatable cuff or balloon on such medical devices as endotracheal tubes. The high elasticity of the composition permits it to act, when in the trachea, as a high residual volume type endotracheal tube, except that it avoids the folds which permit aspiration fluids to channel to the patient's lungs. The pressure it exerts against the tracheal wall falls even below the high volume device. When not inflated, the material returns to a sufficiently small volume that it acts as a low volume device for ease of insertion and withdrawal.

Hydrocarbon block copolymer with dispersed polysiloxane

A coating composition for the preparation of synthetic resin shaped articles excellent in abrasion resistance and weatherability is described. This composition comprises (a) a polyfunctional monomer composition comprising (i) 40-100 wt. % of a polyfunctional monomer containing at least three methacryloyloxy or acryloyloxy groups in the molecule and having a MW of not higher than about 900 and (ii) 0-60 wt. % of a mono- or bi-functional monomer having one or two methacryloyloxy or acryloyloxy groups in the molecule and having a MW of not higher than about 300 per methacryloyloxy or acryloyloxy group, (b) 5-35 parts by wt., based on 100 wt. parts of the monomer composition, of at least one ultraviolet absorber, (c) 0.5-8 wt. parts, based on 100 parts by wt. of the monomer composition, of at least one polymeric material selected from polymers of alkyl methacrylates and alkyl acrylates, and (d) 0.01-6 parts by wt., based on 100 parts by wt. of the monomer composition, of a photosensitizer. The coating composition is coated on a synthetic resin shaped article and then, irradiated with ultraviolet rays in an inert gas or air to form a crosslinked coating film having a thickness of 1 to 30 microns.

Coating composition and process for preparing synthetic resin shaped articles by using same

A delustered thermoplastic resin composition obtained by incorporating in 100 parts by weight of a thermoplastic resin up to 40 parts by weight of a cross-linked polymer having an average particle diameter of 35-500μ which polymer is obtained by suspension-polymerizing a non-crosslinking monomer composition comprising 50-70 wt. % of a vinyl aromatic monomer, 10-40 wt. % of at least one monomer selected from the group consisting of alkyl acrylates having 1-13 carbon atoms in the alkyl group, 10-40 wt. % of a monomer selected from alkyl methacrylates having 1-4 carbon atoms in the alkyl group and 0-40 wt. % of another monoethylenically unsaturated monomer with 0.5-5 parts by weight, per 100 parts by weight of the non-cross-linking monomer composition, of a cross-linking monomer having at least two double bonds in the molecule.

Delustered thermoplastic resin composition

In a process comprising adding an ethylenic monomer or monomer mixture (B) to a rubbery polymer (A) latex, emulsion-polymerizing it to produce a graft copolymer (C) latex, then adding an acidic substance or an electrolyte to said graft copolymer (C) latex to partially coagulate the latex, thereafter either first adding an ethylenic monomer or monomer mixture (D) and then adding a suspension polymerization stabilizer or simultaneously adding an ethylenic monomer or monomer mixture (D) and a suspension polymerization stabilizer, and carrying out suspension polymerization to obtain a graft copolymer (E) in the form of beads, a process for producing an impact-resistant resin wherein: (1) said rubbery polymer (A) contains at least 60% by weight of a diene monomer component and has a degree of swelling of 10-35, a gel content of 70% by weight or more and a weight average particle diameter of 0.2-0.5μ and the major part of the particles has a particle diameter ranging from 0.03μ to 1.0μ; (2) said ethylenic monomer or monomer mixture of (B) and (D) independently comprises 50-100% by weight of an aromatic vinyl monomer and 50-0% by weight of a vinyl monomer copolymerizable therewith; and; (3) said graft copolymer (C) has a free polymer rate of 10% or higher and a reduced viscosity (η sp /C), determined by dissolving 0.1 g of its acetone-soluble fraction into 100 ml of N,N-dimethylformamide and measuring the viscosity at 25° C., of 0.3-1.0 dl/g.

Process for producing impact resistant resins

A polyolefin resin composition comprising a polyolefin modified with an unsaturated carboxylic acid, at least one member selected from the group consisting of polyepoxides, polyisocyanates, and polyamines, and a reinforcement.

Composite material with improved properties

A multi-layer structure polymer composition having a gel content of at least 50% which is constituted of an innermost layer polymer (A) consisting mainly of alkyl acrylate and having a degree of swelling of 10 or lower, and having a glass transition temperature lower than 10° C., a crosslinked elastomer polymer (B) consisting mainly of alkyl acrylate and having a degree of swelling slightly higher than that of said polymer (A) and having a glass transition temperature not higher than 0° C., said innermost layer polymer (A) and said crosslinked elastomer polymer (B) constituting a double layer elastomer structure polymer, as well as an outermost layer polymer (C) consisting mainly of alkyl methacrylate and having a glass transition temperature not lower than 60° C., and at least one intermediate layer (D) existing between said polymer (B) layer and said polymer (C) layer, the amount of alkyl acrylate in said intermediate layer (D) linearly decreasing from said polymer (B) layer to said polymer (C) layer. Said polymer composition does not readily show the phenomenon of whitening even if dipped in hot water or boiling water and is excellent in weather resistance, solvent resistance, stress-whitening resistance, water-whitening resistance and transparency.

Kazuo Kishida

Papers

Coating composition and process for preparing synthetic resin shaped articles by using same

Delustered thermoplastic resin composition

Process for producing impact resistant resins

Composite material with improved properties

Multi-layer structure polymer composition