C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
400/5752, 400/76
C08K 5/10 (2006.01) C08K 7/14 (2006.01) C08K 13/02 (2006.01) C08L 67/02 (2006.01)
Patent
CA 1133644
Abstract of the Disclosure A reinforced or filled polyethylene terephtha- late composition that can be molded at mold temperatures below about 110°C to produce a molded article having a smooth and glossy surface is disclosed. The composition consists essentially of, (A) polyethylene terephthalate having an inherent viscosity of at least about 0.4; (B) between about 10 and about 60 percent by weight reinforcing or filling material; (C) a sodium or potassium salt of an organic polymer which contains pendant carboxyl groups, the salt being present in an amount sufficient to provide a .DELTA.HH/.DELTA.HC ratio of less than 0.25 to a mixture of components (A), (B) and (C); and (D) a compound present in an amount sufficient to provide a Tpk at least 4°C lower than the Tpk of a mixture of components A, B and C. Compound D is an organic ester selected from the product of an aliphatic carboxylic acid of 1 to 20 carbon atoms containing 1-3 carboxyl groups, and an alcohol of the formula HO?R"O?yR"' wherein R" is a hydrocarbon radical of 2-15 carbon atoms, R"' is -H or a hydrocarbon radical of 2-20 carbon atoms, and when R"' is -H, y is a cardinal number between 2 and 15, and when R"' is a hydrocarbon radical, y is a cardinal number between 1 and 15.
322519
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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