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US 4,362,839 AGranted
Modified polyalkylene terephthalate composition
AssigneeKanegafuchi Kagaku Kogyo Kabushiki Kaisha
InventorsSatoshi Tonoki, Kazushi Hirobe, Tadashi Osawa, Masahiko Nishigaki
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Abstract
A modified polyalkylene terephthalate composition comprising polyalkylene terephthalate and polyoxyalkylene compound having metal salt of organic carboxylic acid. The composition, which can be used as a molding material, has improved workability, high crystallizing rate and excellent mechanical strength.
Claims15
A modified polyalkylene terephthalate composition comprising
- (A) 100 parts by weight of a polyester consisting substantially of polyalkylene terephthalate, with the alkylene unit thereof having from 2 to 15 carbon atoms;
- (B) a polyoxyalkylene compound having the general formula:
- ##STR4## wherein R.sup.1 is hydrogent or an organic group of valence "m," R.sup.2 is an aliphatic hydrocarbon group having 2 to 4 carbon atoms, l is zero or a positive integer and at least 2 for 1 molecule, R.sup.3 is a group containing an alkali metal salt or an alkali earth metal salt of carboxylic acid, or partially hydrogen, and "m" is an integer of 1 to 6, and in an amount so that the amount of said alkali metal is 0.001 to 2.0 weight percent of said polyester;
- and
- (C) 0 to 200 weight parts of a filler.
2 more elements
The composition of claim 8, wherein "X" is an aromatic hydrocarbon having 6 to 18 carbon atoms.
Dependencies are inferred from the claim text.