Claims
- 1. A crosslinkable polymeric composition having improved flame retardancy comprising:
- (a) a copolymer of ethylene and a vinyl ester of a C.sub.2 -C.sub.6 aliphatic carboxylic acid, a C.sub.1 -C.sub.6 alkyl acrylate or C.sub.1 -C.sub.6 alkyl methacrylate,
- (b) from 80 to 400 parts of hydrated inorganic filler per 100 parts of copolymer,
- (c) 0.4 to 8 parts of an alkoxysilane per 100 parts of hydrated inorganic filler, and
- (d) a flame-retardant component containing a dual lubricant system comprising a fatty acid having from 8 to 25 carbon atoms and an alkylene-bis-amide having the general formula: ##STR4## wherein R=a divalent alkylene radical of from 2 to 8 carbon atoms; and
- R'= ##STR5## wherein R.sup.2 is an aliphatic radical having from 8 to 25 carbon atoms, a halogenated flame retardant and, optionally, antimony trioxide.
- 2. In a crosslinked polymeric composition having significant flame retardancy which comprises:
- (a) a copolymer of ethylene and a vinyl ester of a C.sub.2 -C.sub.6 aliphatic carboxylic acid, a C.sub.1 -C.sub.6 alkyl acrylate or C.sub.1 -C.sub.6 alkyl methacrylate,
- (b) from about 80 to about 400 parts of hydrated inorganic filler per 100 parts of copolymer, and
- (c) about 0.4 to about 8 parts of an alkoxysilane per 100 parts of hydrated inorganic filler; the improvement comprising:
- (d) a flame-retardant component containing a dual lubricant system comprising a fatty acid having from 8 to 25 carbon atoms and an alkylene-bis-amide having the general formula ##STR6## wherein R=a divalent alkylene radical of from 2 to 8 carbon atoms;
- R'= ##STR7## wherein R.sup.2 is an aliphatic radical having from 8 to 25 carbon atoms, a halogenated flame-retardant, and, optionally, antimony trioxide.
- 3. The composition of claim 1, wherein said dual lubricant system is present in an amount of from about 0.1 to about 10 percent by weight of the total polymeric composition.
- 4. The composition of claim 3, wherein said dual lubricant system is present in an amount of from about 0.5 to about 3.0 percent by weight of the total polymeric composition.
- 5. The composition of claim 3, wherein the ratio of said fatty acid to said alkylene-bis-amide is from about 1:1 to about 1:6.
- 6. The composition of claim 5, wherein said ratio is about 1:3.
- 7. The composition of claim 3, wherein said fatty acid is lauric acid.
- 8. The composition of claim 3, wherein said alkylene-bis-amide is ethylene-bis-stearamide.
- 9. The composition of claim 3, wherein said dual lubricant system comprises lauric acid and ethylene-bis-stearamide.
- 10. The composition of claim 9, wherein the ratio of said lauric acid to said ethylene-bis-stearamide is about 1:3.
- 11. The composition of claims 1, wherein said halogenated flame retardant is present in an amount of from about 5 to about 30 percent by weight of the total polymeric composition.
- 12. The composition of claim 5, wherein said halogenated flame retardant is present in an amount of from about 8 to about 14 percent by weight of the total polymeric composition.
- 13. The composition of claims 1, wherein said halogenated flame retardant is selected from the group consisting of ethylene-bis-tetra-bromophthalimide and deca-bromodiphenyl oxide.
- 14. The composition of claims 1, wherein said antimony trioxide is present in an amount of from about 2 to about 20 percent by weight of the total polymeric composition.
- 15. The composition of claim 14, wherein said antimony trioxide is present in an amount of from about 4 to about 8 percent by weight of the total polymeric composition.
- 16. An electrical conductor coated with a uniinsulating layer comprising the crosslinked polymeric compositions of claim 1.
- 17. A method of providing flame retardancy to a crosslinkable polymeric composition comprising:
- (a) a copolymer of ethylene and a vinyl ester of a C.sub.2 -C.sub.6 aliphatic carboxylic acid, a C.sub.1 -C.sub.6 alkyl acrylate or C.sub.1 -C.sub.6 alkyl methacrylate,
- (b) from 80 to 400 parts of hydrated inorganic filler per 100 parts of copolymer, and
- (c) 0.4 to 8 parts of an alkoxysilane per 100 parts of hydrated inorganic filler, by including in said composition a flame-retardant component comprising a dual lubricant system comprising a fatty acid having from 8 to 25 carbon atoms and an alkylene-bis-amide having the general formula: ##STR8## wherein R=a divalent alkylene radical of from 2 to 8 carbon atoms; and
- R'= ##STR9## wherein R.sup.2 is an aliphatic radical having from 8 to 25 carbon atoms, a halogenated flame retardant and, optionally, antimony trioxide.
- 18. The method of claim 17, wherein said dual lubricant system is present in an amount of from about 0.1 to about 10 percent by weight of the total polymeric composition.
- 19. The method of claim 18, wherein said dual lubricant system is present in an amount of from about 0.5 to about 3.0 percent by weight of the total polymeric composition.
- 20. The method of claim 18, wherein the ratio of said fatty acid to said alkylene-bis-amide is from about 1:1 to about 1:6.
- 21. The method of claim 20, wherein said ratio is about 1:3.
- 22. The method of claim 17, wherein said fatty acid is lauric acid.
- 23. The method of claim 17, wherein said alkylene-bis-amide is ethylene-bis-stearamide.
- 24. The method of claim 17, wherein said dual lubricant system comprises lauric acid and ethylene-bis-stearamide.
- 25. The composition of claim 24, wherein the ratio of said lauric acid to said ethylene-bis-stearamide is about 1:3.
- 26. The method of claim 17, wherein said halogenated flame retardant is present in an amount of from about 5 to about 30 percent by weight of the total polymeric composition.
- 27. The method of claim 20, wherein said halogenated flame retardant is present in an amount of from about 8 to about 14 percent by weight of the total polymeric composition.
- 28. The method of claim 17, wherein said halogenated flame retardant is selected from the group consisting of ethylene-bis-tetrabromophthalimide and deca-bromodiphenyl oxide.
- 29. The method of claim 17, wherein said antimony trioxide is present in an amount of from about 2 to about 20 percent by weight of the total polymeric composition.
- 30. The method of claim 29, wherein said antimony trioxide is present in an amount of from about 4 to about 8 percent by weight of the total polymeric composition.
Parent Case Info
This is a continuation of co-pending application Ser. No. 371,688 filed Apr. 26, 1982, now abandoned.
US Referenced Citations (14)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0002814 |
Feb 1967 |
JPX |
0117547 |
Sep 1979 |
JPX |
0078048 |
Jun 1980 |
JPX |
Non-Patent Literature Citations (8)
Entry |
Derwent Abst. 22080E/12 BE890270; 22079E/12 BE890269, Published 3-8-82. |
Derwent Abst. 70694Y/40 (9-77) BE852991 Nat. Distillers. |
Derwent Abst. 67910C/39 (9-80) DT2909498 BASF AG. |
Derwent Abst. 96744X/52 (11-76) J51128194 Sumitomo. |
Derwent Abst. 68609B/38 (9-79) GB2016016 Nat. Distillers. |
Derwent Abst. 52283D/29 (5-81) J56062842 Sekisui Chemi. |
Derwent Abst. 14389E/08 (1-82) J57005752 Mitsubishi. |
Derwent Abst. 52282D/29 (5-81) J56062841 Sekisui Chemi. |
Continuations (1)
|
Number |
Date |
Country |
Parent |
371688 |
Apr 1982 |
|