Abstract: The present invention provides a raulti-layer heat-shrinkable film comprising: a first outer layer comprising a polyester; a second outer layer comprising a polyester; an inner layer comprising a polyolefin; a first intermediate layer between the first outer layer and the inner layer comprising polypropylene grafted with glycidyl methacrylate either directly or through a graft promoter; and a second intermediate layer between the second outer layer and the inner layer comprising polypropylene grafted with glycidyl methacrylate either directly or through a graft promoter.

Abstract: Poly-2-methyl-1,3-propylene ether glycol has at least two repeating units of --CH.sub.2 --CH(CH.sub.3)--CH.sub.2 --O-- and hydroxyl groups at both ends. It is applicable as the soft segment component for polyester and polyurethane, and resin materials in various fields.

Abstract: Polyalkylene ether glycol copolymers having a number-average molecular weight of from 200 to 10,000 and having hydroxyl groups at both ends of the molecule are disclosed.

Abstract: Mono(meth)acrylate or di(meth)acrylate of 2-methylpropylene glycol. The diacrylate, or a low molecular weight oligomer thereof, with polymeric filler and sensitizer is useful as a photosensitive component.

Abstract: There is disclosed a novel 2-methyl-1,3-propylene glycol mono- or di-alkylene oxide ether having the formulae (I) or (II): ##STR1## in which R and R' are linear or branched alkylene groups with C.sub.1 -C.sub.3. The di-alkylene oxide ether is useful as an active ingredient for a photocurable composition.

Abstract: A polyester copolymer, suitable for an adhesive, is obtained by copolymerizing(A) terephthalic acid or a mixture of more than 50 mol % of terephthalic acid and at least one kind of dicarboxylic acid selected from aromatic dicarboxylic acids excluding terephthalic acid and aliphatic dicarboxylic acids,(B) a low-molecular weight diol composed of 1 to 50 mol % of 2-methyl-1,3-propanediol and 99 to 50 mol % of 1,6-hexanediol, and(C) at least one kind of high-molecular weight diol (in such an amount that the high-molecular weight diol component in the copolymer is 0 to 60 wt %) selected from polyalkylene ether glycol and polycaprolactone glycol.

Abstract: A polyester composition comprises polyethylene terephthalate and 0.1 to 15 wt. %, based on the polyethylene terephthalate, of 2-methyl-1,3-propylene glycol dibenzoate. It may further contain up to 40 wt. % of filler and up to 60 wt. % of a reinforcing fiber.

Abstract: A modified polyethylene terephthalate molding material containing terephthalic acid as a major dicarboxylic acid component and ethylene glycol as a major glycol component, which contains 0.1 to 15 mol %, based on the total amount of said glycol component present, of 2-methyl-1,3-propanediol as part of said glycol component.

Abstract: A thermoplastic polyester copolymer comprises units derived from (A) terephthalic acid, a diol mixture of (B-1) 60 to 95 mol % of 2-methyl-1,3-propanediol and 5 to 40 mol % of 1,4-cyclohexanedimethanol, or (B-2) 5 to 95 mol % of 2-methyl-1,3-propanediol and 5 to 95 mol % of tetramethyleneglycol, and (C) 5 to 50 wt. %, based on the copolymer, of a polyalkylene ether glycol phthalate having a number-average molecular weight of 500 to 3000 in the polyalkylene ether glycol block thereof.

Abstract: Polytetramethyleneterephthalate is modified with incorporation of 2-methyl-1,3-propanediol. The diol component of the polyester comprises 1 to 99 mol % of tetramethylene glycol and 99 to 1 mol % of 2-methyl-1,3-propanediol. Alternatively polytetramethylene terephthalate is combined with 0.1 to 25 wt. %, based thereon, of poly-2-methyl-1,3-propylene terephthalate.

Abstract: A flame retardant resin composition having a high impact resistance is disclosed, containing (A) 20 to 85 weight percent of a high molecular weight aromatic polycarbonate copolymer comprising (1) 2 to 30 molar percent of a bisphenol the nucleus of which is substituted with a halogen and (2) 70 to 98 molar percent of a halogen-free bisphenol and (B) 80 to 15 weight percent of an ABS resin comprising a mixture of (1) a graft copolymer of a butadiene-based rubbery polymer to which is grafted a vinyl aromatic hydrocarbon and acrylonitrile and and (2) a copolymer of a vinyl aromatic hydrocarbon and acrylonitrile. The amount of said rubbery polymer is 5 to 40 weight percent of the ABS resin.