Claims
- 1. A flame-retardant synthetic resin composition comprising a thermoplastic resin selected from the group consisting of polyolefin, acrylonitrile-butadiene-styrene copolymer and ethylene-ethyl acrylate copolymer resins as a base polymer and, incorporated therein, (A) a polyester fiber cut into a length smaller than 10 mm and/or a polyester powder having a particle size smaller than 10 mesh and (B) a polyphosphoric acid compound having a high water resistance, wherein the amount of the thermoplastic resin is 40 to 95% by weight, the total amount of the components (A) and (B) is 5 to 60% by weight, and the component (A)/component (B) weight ratio is in the range of from 5/1 to 1/20.
- 2. A composition according to claim 1, wherein the total amount of the components (A) and (B) is 10 to by weight.
- 3. A composition according to claim 2, wherein the total amount is 15 to 40% by weight.
- 4. A composition according to claim 1, wherein the monofilament denier of the polyester fiber is smaller than 15.
- 5. A composition according to claim 4, wherein the monofilament denier is smaller than 10.
- 6. A composition according to claim 1, wherein the particle size of the polyester powder is smaller than 20 mesh.
- 7. A composition according to claim 6, wherein the particle size is smaller than 50 mesh.
- 8. A composition according to claim 1, wherein the polyester fiber has a length of smaller than 7.5 mm.
- 9. A composition according to claim 8, wherein the length is smaller than 5 mm.
- 10. A composition according to claim 1, wherein the polyester fiber or powder has a softening point higher than the softening point of the base polymer and is softened and melted before carbonization at the combustion.
- 11. A composition according to claim 1, wherein the polyester fiber is one that has been bundled by an adhesive polymer and cut into a length smaller than 10 mm.
- 12. A composition according to claim 11, wherein the monofilament denier of the organic fiber is smaller than 20.
- 13. A composition according to claim 12, wherein the monofilament denier is smaller than 15.
- 14. A composition according to claim 11, wherein the adhesive polymer is selected from ethylene-vinyl acetate copolymers, polyvinyl acetate, polyamides, ethylene-vinyl chloride copolymers, ethylene-vinyl acetate-vinyl chloride copolymers, ethylene-ethyl acrylate copolymers, polyesters, and atactic polypropylene.
- 15. A composition according to claim 1, wherein the polyphosphoric acid compound is selected from amidopolyphosphoric acids, ammonium polyphosphates, high condensates of amidophosphoric acid, and carbamyl polyphosphates.
Priority Claims (1)
Number |
Date |
Country |
Kind |
62-139923 |
Jun 1987 |
JPX |
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Parent Case Info
CROSS-REFERENCES TO RELATED APPLICATIONS
This is a continuation-in-part of an application Ser. No. 102,907 filed on Sept. 30, 1987, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4198493 |
Marciandi |
Apr 1980 |
|
Foreign Referenced Citations (2)
Number |
Date |
Country |
1121936 |
Apr 1982 |
CAX |
0037706 |
Jan 1981 |
EPX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
102907 |
Sep 1987 |
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