Schockproof polyester-injected parts
AssigneeAtofina
InventorsPatrice Perret, Jacques Komornicki, Yoshiyuki Miyaki
Life of this patent
Estimating the term…
Abstract
Polyester injection-moulded parts based on a polyester (A) and on a copolymer (B) of ethylene and of an unsaturated epoxy, such that weight % (B)×MFI (A+B)/MFI(A) is greater than 3 and in this expression: MFI (A+B) denotes the melt flow index of the modified polyester, that is to say the blend of (A) and (B) and of any fillers; MFI (A) denotes the melt flow index of the polyester (A) and of any fillers (without (B)); and weight % (B) denotes the percentage by weight of (B) in the blend of (A) and (B) and of any fillers.
Claims19
A polyester injection-moulded part based on a blend of polyethylene terepthalate (A) and a copolymer (B) of ethylene and of an unsaturated epoxy, such that (weight % (B)×MFI (A+B))/MFI (A) is greater than 3 wherein:
- MFI (A+B) denotes the melt flow index of the blend of (A) and (B) and optional fillers;
- MFI (A) denotes the melt flow index of the polyester (A) and optional fillers, without (B);
- and
- weight % (B) denotes the percentage by weight of (B) in the blend of (A) and (B) and optional fillers.
A polyester injection-molded part based on a blend of polybutylene terephthalate (A) and an ethylene/alkyl (meth)acrylate/glycidyl (meth)acrylate copolymer (B), such that (weight % (B)×MFI (A+B))/MFI (A) is greater than 3 wherein:
- MFI (A+B) denotes the melt flow index of the blend of (A) and (B) and optional fillers;
- MFI (A) denotes the melt flow index of the polyester (A) and optional fillers, without (B);
- and
- weight % (B) denotes the percentage by weight of (B) in the blend of (A) and (B) and optional fillers.
A polyester injection-molded part comprising:
- a polyester (A) and a blend (B) wherein the blend (B) comprises a copolymer (B1) comprising ethylene and an unsaturated epoxy and a copolymer (C) of an ethylene/alkyl (meth)acrylate copolymer, such that (weight % (B)×MFI (A+B))/MFI (A) is greater than 3 wherein:
- MFI (A+B) denotes the melt flow index of (A) and (B), and optionally, at least one filler;
- MFI (A) denotes the melt flow index of the polyester (A) without (B), and optionally, at least one filler;
- and
- weight % (B) denotes The percentage by weight of (B) in (A) and (B), and optionally, at least one filler.
A polyester injection-molded part comprising a blend, wherein the blend comprises:
- a polyester (A) and a blend (B) wherein the blend (B) comprises a copolymer (B1) consisting essentially of ethylene and an unsaturated epoxy and a copolymer (C) of an ethylene/alkyl (meth)acrylate copolymer, such that (weight % (B)×MFI (A+B))/MFI (A) is greater than 3 wherein:
- MFI (A+B) denotes the melt flow index of the blend of (A) and (B), and optionally, at least one filler;
- MFI (A) denotes the melt flow index of the polyester (A) without (B), and optionally, at least one filler;
- and
- weight % (B) denotes the percentage by weight of (B) in the blend of (A) and (B), and optionally, at least one filler.
A polyester injection-molded part comprising a blend, wherein the blend comprises:
- a polyester (A) and a blend (B) wherein the blend (B) comprises a copolymer (B1) consisting of ethylene and an unsaturated epoxy and a copolymer (C) of an ethylene/alkyl (meth)acrylate copolymer, such that (weight % (B)×MFI (A+B)) MFI (A) is greater than 3 wherein:
- MFI (A+B) denotes the melt flow index of the blend of (A) and (B), and optionally, at least one filler;
- MFI (A) denotes the melt flow index of the polyester (A) without (B), and optionally, at least one filler;
- and
- weight % (B) denotes the percentage by weight of (B) in the blend of (A) and (B), and optionally, at least one filler.
Dependencies are inferred from the claim text.