Back to results
US 6,444,753 B1Granted
Polyester molding composition
AssigneeGeneral Electric Company
InventorsRobertus Maria Mangnus, Gerrit de Wit
Life of this patent
Estimating the term…
Abstract
A polyester molding composition which includes the presence of gloss reducing amounts of PET, polyester containing ionomeric groups, or mixtures thereof in a PBT/styrenic impact modifier blend for providing low gloss on a textured surface.
Claims20
A polyester molding composition, comprising;
- a blend of polybutylene terephthalate and a rubbery impact modifier;
- and
- an ionomer polyester polymer, wherein the ionomer polyester polymer comprises an ionomer unit having a formula (I):
- or a formula (II):
- (M+nO3S)d-A-(OR″OH)p,
- wherein p is 1, 2 or 3;
- d is 1, 2 or 3;
- p+d equals 2, 3, 4, 5 or 6, M is a metal and n is 1, 2, 3, 4, or 5;
- R″ is selected from the group consisting of —CH2CH2—, —CH2CH2OCH2CH2—, —CH(CH3)CH2—,—CH2CH2CH2—, and —CH2CH2CH2CH2—;
- and A is an aryl group containing one or more aromatic rings.
7 more elements
A polyester molding composition, comprising:
- a blend of polybutylene terephthalate and 30-60% by weight of the total composition of a rubbery impact modifier;
- and
- a gloss reducing amount of polyethylene terephthalate.
Dependencies are inferred from the claim text.