Polyethylene terephthalate molding compositions
AssigneeToray Industries, Inc.
InventorsHiroshi Iida, Kiichi Kometani, Masana Yanagi
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Abstract
Impact-modified and moldability-improved polyethylene terephthalate molding compositions are provided which comprise polyethylene terephthalate resins, a copolymer of .alpha.-olefins and glycidyl esters of .alpha.,.beta.-ethylenically-unsaturated carboxylic acids and barium salt of fatty acids. Glass fiber reinforcement of the polyester compositions is preferable because of further enhancement of the moldability of the polyester composition thereof. In addition, resistance to moist heat is also increased.
Claims13
Polyethylene terephthalate molding compositions which comprise
- (a) polyethylene terephthalate having an intrinsic viscosity of at least 0.4 as measured at 1% concentration in o-chlorophenol at 25.degree. C.,
- (b) from 0.1 to 40 parts by weight, based on 100 parts by weight of polyethylene terephthalate, of a copolymer of an .alpha.-olefin, and a glycidyl ester of .alpha.,.beta.-unsaturated-aliphatic carboxylic acid having the general formula ##STR4## wherein R is hydrogen or a lower alkyl radical, and (c) from 0.1 to 5 parts by weight, based on 100 parts by weight of polyethylene terephthalate, of the barium salt of a fatty acid having 8 to 33 carbon atoms.
Polyethylene terephthalate molding compositions which comprise
- (a) polyethylene terephthalate having an intrinsic viscosity of at least 0.4 as measured at 1% concentration in o-chlorophenol at 25.degree. C.,
- (b) from 0.1 to 40 parts by weight, based on 100 parts by weight of polyethylene terephthalate, of copolymers of .alpha.-olefins and glycidyl esters of .alpha.,.beta.-unsaturated-aliphatic carboxylic acids,
- (c) from 0.1 to 5 parts by weight, based on 100 parts by weight of polyethylene terephthalate, of the barium salt of fatty acids having 8 to 33 carbon atoms,
- (d) up to 100 parts by weight, based on 100 parts by weight of polyethylene terephthalate, of a reinforcement selected from the group consisting of glass fiber, asbestos, mica and talc, and
- (e) from 0 to 10 parts by weight, based on 100 parts by weight of polyethylene terephthalate, of a compound containing ester linkages, of the general formulas ##STR5## wherein R.sub.1 is an alcoholic residue having 1 to 20 carbon atoms, and n is from 1 to 4, ##STR6## wherein R.sub.2 is hydrogen or carboxylic residue, and l, m, and n are from 2 to 10, 1 to 10 and 1 to 30, respectively.
Dependencies are inferred from the claim text.