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US 8,138,244 B2Granted
Reinforced polyester compositions, method of manufacture, and articles thereof
AssigneeSabic Innovative Plastics IP B.V.
InventorsTianhua Ding, Sung Dug Kim
Life of this patent
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Abstract
A composition comprises, based on the total weight of the composition: from 20 to 90 wt. % of a polyester component comprising a modified poly(butylene terephthalate) copolymer that is derived from a poly(ethylene terephthalate) component; from 5 to 35 wt. % of a flame retardant phosphinate and/or a flame retardant diphosphinate; from 1 to 25 wt. % of a melamine polyphosphate, melamine cyanurate, melamine pyrophosphate, and/or melamine phosphate; from greater than zero to 50 wt. % of a glass fiber having a non-circular cross-section; and from 0 to 5 wt. % of an additive.
Claims49
A composition comprising, based on the total weight of the composition:
- from 20 to 90 wt. % of a polyester component comprising a modified poly(butylene terephthalate) copolymer, that (1) is derived from a poly(ethylene terephthalate) copolymer and (2) that has at least one residue derived from the poly(ethylene terephthalate) copolymer;
- from 5 to 35 wt. % of
- a flame retardant phosphinate of the formula (I)
- [(R1)(R2)(PO)—O]−mMm+ (I)
- a flame retardant diphosphinate of the formula (II)
- [(O—POR1)(R3)(POR2—O)]2−nMm+x (II), and/or
- a flame retardant polymer derived from the flame retardant phosphinate of the formula (I) or the flame retardant diphosphinate of the formula (II), wherein R1 and R2 are identical or different and are H, C1-C6 alkyl, linear or branched, or C6-C10 aryl;
- M is an alkaline earth metal, alkali metal, Al, Ti, Zn, Fe, or boron;
- m is 1, 2, 3 or 4;
- n is 1, 2, or 3;
- and x is 1 or 2;
- from 1 to 25 wt. % of a melamine polyphosphate, melamine cyanurate, melamine pyrophosphate, and/or melamine phosphate;
- from greater than zero to 50 wt. % of a glass fiber having a non-circular cross-section;
- and
- from 0 to 5 wt. % of an additive selected from the group consisting of a mold release agent, an antioxidant, a thermal stabilizer, and a UV stabilizer;
- wherein the at least one residue derived from the poly(ethylene terephthalate) copolymer comprises mixtures of ethylene glycol and diethylene glycol groups;
- and
- wherein a molded article comprising the composition has an unnotched Izod impact strength at least 20% higher than for the same composition having the same amount of circular glass fibers, each measured at 23° C. in accordance with ASTM D256.
15 more elements
A composition consisting essentially of, based on the total weight of the composition:
- from 20 to 90 wt. % of a modified poly(butylene terephthalate) copolymer that (1) is derived from a poly(ethylene terephthalate) copolymer and (2) that has at least one residue derived from the poly(ethylene terephthalate) copolymer;
- from 5 to 35 wt. % of
- a flame retardant phosphinate of the formula (Ia)
- [(R1)(R2)(PO)—O]−3Al3+ (Ia),
- a flame retardant diphosphinate of the formula (IIa)
- [(O—POR1)(R3)(POR2—O)]2−3Al3+2(IIa), and/or
- a flame retardant polymer derived from formula (I) or (II),
- wherein R1 and R2 are identical or different and are H, C1-C6 alkyl, linear or branched, or C6-C10 aryl;
- and R3 is C1-C10, alkylene, linear or branched, C6-C10 arylene, C7-C11 alkylarylene, or C7-C11 arylalkylene;
- from 1 to 25 wt. % of melamine polyphosphate and/or melamine cyanurate;
- from greater than 0 to 50 wt. % of a glass fiber having a flat cross-section;
- and
- from 0 to 5 wt. % of an additive selected from the group consisting of a mold release agent, an antioxidant, a thermal stabilizer, and a UV stabilizer;
- wherein the composition contains less than 900 ppm of a halogen selected from the group consisting of bromine, chlorine, and combinations thereof;
- wherein the components have a combined total weight of 100 wt. %, wherein the at least one residue derived from the poly(ethylene terephthalate) copolymer comprises mixtures of ethylene glycol and diethylene glycol groups;
- and
- wherein a 0.8 mm thick molded sample comprising the composition has a UL-94 flammability rating of V0;
- and
- wherein a molded article comprising the composition has an unnotched Izod impact strength at least 20% higher than for the same composition having the same amount of circular glass fibers, each measured at 23° C. in accordance with ASTM D256.
16 more elements
A composition consisting essentially of, based on the total weight of the composition:
- from 20 to 90 wt. % of a modified poly(butylene terephthalate) copolymer that (1) is derived from a poly(ethylene terephthalate) copolymer and (2) that has at least one residue derived from the poly(ethylene terephthalate) copolymer;
- from 5 to 25 wt. % of
- a flame retardant phosphinate of the formula (Ia)
- [(R1)(R2)(PO)—O]−3Al3+ (Ia),
- a flame retardant diphosphinate of the formula (IIa)
- [(O—POR1)(R3)(POR2—O)]2−3Al3+2 (IIa), and/or
- a flame retardant polymer derived from formula (I) or (II),
- wherein R1 and R2 are identical or different and are H, C1-C6 alkyl, linear or branched, or C6-C10 aryl;
- and R3 is C1-C10, alkylene, linear or branched, C6-C10 arylene, C7-C11 alkylarylene, or C7-C11 arylalkylene;
- from 1 to 15 wt. % of melamine polyphosphate and/or melamine cyanurate;
- from greater than 0 to 45 wt. % of a glass fiber having a flat cross-section;
- and
- from 0 to 5 wt. % of an additive selected from the group consisting of a mold release agent, an antioxidant, a thermal stabilizer, and a UV stabilizer;
- wherein the components have a combined total weight of 100 wt. %;
- and wherein the at least one residue derived from the poly(ethylene terephthalate) copolymer comprises mixtures of ethylene glycol and diethylene glycol groups;
- wherein the composition contains less than 900 ppm of a halogen selected from the group consisting of bromine, chlorine, and combinations thereof;
- and
- wherein a 0.8 mm thick molded sample comprising the composition has a UL-94 flammability rating of V0;
- and
- wherein a molded article comprising the composition has an unnotched Izod impact strength at least 20% higher than for the same composition having the same amount of circular glass fibers, each measured at 23° C. in accordance with ASTM D256.
17 more elements
Dependencies are inferred from the claim text.