Dainippon Ink and Chemicals, Incorporated

Dic Corporation

Akio Toyoda

Satoshi Oya

Kosuke Arai

Hidetsugu Sawada

Nobuyuki Konishi

Kousuke Arai

Koji Adachi

Osamu Suzuki

Yoshiyuki Yaoita

Takafumi Noguchi

Tetsurou Umemoto

Yukihide Tsukamoto

Yasuhiro Sato

Akira Urabe

Minoru Seino

The present invention provides a plasticizer for a vinyl chloride resin including an ester compound (A1) represented by General Formula (1): (in the formula, L's each represent an aliphatic oxycarboxylic acid residue having 3 to 18 carbon atoms or a cyclic ester residue having 3 to 18 carbon atoms, R's each represent an alkyl group having 6 to 18 carbon atoms, R's each represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, a represents a repeating number of the L, provided that the total of the plural a's is from 1 to 10, and x is an integer of 2 to 4), in order to provide a plasticizer for a vinyl chloride which has excellent compatibility with vinyl chloride resins and with which a vinyl chloride resin composition capable of providing a molded article having excellent freeze resistance and heat resistance can be obtained.

Plasticizer for vinyl chloride resin, vinyl chloride resin composition, wire harness, and dashboard

A multilayered biaxially-oriented styrene based resin sheet comprises; a styrene based resin layer (A) as at least two outer layers formed by the polymerization of methacrylic acid in a weight proportion of 1&tilde;3.5% and styrene, and a styrene based resin layer (B) formed from polystyrene which is sandwiched between the outer layers and for which the loss tangent (tan &dgr;) maximum peak value temperature for dynamic viscoelasticity measurement is 6.5&tilde;25&deg; C. lower than that for the resin of the resin layer (A). The sheet has excellent properties of transparency and external appearance, can be reused by recovering and moreover does not suffer from raindrop occurrence by secondary forming.

Multilayered biaxially-oriented styrene based resin sheet and method for production thereof

The present invention provides a lactic acid-based polymer laminated product which is little liable to leakage of lactide during molding or storage of the molded product and can degrade at a raised rate and a molded product made of such a laminated product. Disclosed are a novel lactic acid-based polymer laminated product comprising a degradation accelerator barrier layer (II) made of a lactic acid-based polymer (B) having a lactide content of not more than 0.1% by weight laminated on one or both surfaces of a base layer (I) made of a lactic acid-based polymer (A) comprising a degradation accelerator made of lactide and/or organic acid in an amount of from 0.3 to 7% by weight, wherein the ratio of the barrier layer thickness to the base layer thickness is from 0.02 to 1 based on that of the base layer, and a molded product of the laminated product.

Lactic acid-based polymer laminated product and molded product

Disclosed is a heat-sealable lactic acid-based polymer laminates which have heat resistance of 60.degree. C. or above, high sealing strength and good biodegradability and are useful in various films, sheets, packaging containers, etc., comprising a base layer (I) made of a crystallized lactic acid-based polymer (A) and a sealing layer (II) made of an amorphous lactic acid-based polymer (B) having a softening point lower than the melting point of said lactic acid-based polymer (A), and films, sheets or packaging containers with the use of these laminates.

Heat-sealable lactic acid-based polymer laminates

A multilayered biaxially-oriented styrene based resin sheet comprises; a styrene based resin layer (A) as at least two outer layers formed by the polymerization of methacrylic acid in a weight proportion of 1-3.5% and styrene, and a styrene based resin layer (B) formed from polystyrene which is sandwiched between the outer layers and for which the loss tangent (tan .delta.) maximum peak value temperature for dynamic viscoelasticity measurement is 6.5-25.degree. C. lower than that for the resin of the resin layer (A). The sheet has excellent properties of transparency and external appearance, can be reused by recovering and moreover does not suffer from raindrop occurrence by secondary forming.

Multilayered biaxially-oriented styrene based resin sheet and method for

A biaxially stretched composite styrene resin sheet of a multilayer structure, comprising at least one layer of polystyrene and at least two layers of a mixture of polystyrene and styrene/butadiene block copolymer resin, wherein both outside layers are formed of said mixture, the thickness of each of the outside layers is 1 to 20% of the total thickness of the sheet, and the entire sheet is biaxially stretched.

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Ichihara, Japan

Akio Toyoda