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Articles derived from compositions containing modified polybutylene terephthalate (PBT) random copolymers derived from polyethylene terephthalate (PET)

  • US 7,935,737 B2
  • Filed: 01/29/2007
  • Issued: 05/03/2011
  • Est. Priority Date: 01/27/2006
  • Status: Active Grant
First Claim
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1. A composition of matter comprising an article derived from a molding composition containing:

  • (a) from 5 to 99.99 wt % of a modified polybutylene terephthalate random copolymer that (1) is derived from a polyethylene terephthalate component selected from the group consisting of polyethylene terephthalate and polyethylene terephthalate copolymers and (2) comprises at least one residue derived from the polyethylene terephthalate component, and(b) from 0.01 to 95 wt % of a component member selected from the group consisting of (1) fillers, (2) carboxy reactive materials, (3) polyalkylene terephthalates, (4) combinations of polycarbonates and impact modifiers, (5) impact modifiers, (6) polycarbonates, and (7) combinations thereof;

    wherein the modified polybutylene terephthalate random copolymer, the component member selected from the group consisting of (1) fillers, (2) carboxy reactive materials, (3) polyalkylene terephthalates, (4) combinations of polycarbonates and impact modifiers, (5) impact modifiers, (6) polycarbonates, and (7) combinations thereof, and optionally at least one additive, are present in a total amount of 100 wt %; and

    wherein the at least one residue derived from the polyethylene terephthalate component is diethylene glycol groups in an amount ranging from 0.1 to 10 mole % based on 100 mole % of glycol in the molding composition.

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