Claims
- 1. A flame-resistant polyamide resin composition consisting of:
- (A) a polyamide,
- (B) a flame retardant consisting of a modified brominated polymer having from 0.1 to 20 mole % of acid anhydride groups, based on the total moles of flame retardant (B), and a bromine content of from 50 to 80 wt. %, based on the total weight of flame retardant (B), said modified brominated polymer being a brominated copolymer of an unsaturated compound and an unsaturated compound having acid anhydride groups, wherein said unsaturated compound is represented by the formula (1): ##STR3## wherein R.sub.1 and R.sub.2, which may be the same or different, each represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and k represents an integer of 5;
- (C) a flame retardant consisting of an unmodified brominated polystyrene, in which the bromine content is from 50 to 80 wt. %, based on the total weight of flame retardant (C), and
- (D) an antimony compound,
- said composition satisfying the following conditions:
- a+b+c=100
- 0. 5.ltoreq.b.ltoreq.35
- 0.ltoreq.c.ltoreq.34.5
- 5.ltoreq.b+c.ltoreq.35
- 0.1.ltoreq..alpha..ltoreq.20
- 14.ltoreq.((b)(0.01x))+((c)(0.01y)).ltoreq.20
- wherein a, b and c represent the amounts in weight % of components (A), (B) and (C), respectively, x and y represent the bromine contents in weight % of component (B) based on the total weight of flame retardant (B) and of component (C) based on the total weight of flame retardant (C), respectively, and .alpha. represents the total amount in mole % of the acid anhydride groups of component (B).
- 2. The flame-resistant polyamide resin composition according to claim 1, wherein the polyamide of component (A) is a member selected from the group consisting of a copolymer of nylon-6,6 and nylon-6, a blend of nylon-6,6 and nylon-6, a copolymer of nylon-6T and nylon-6,6 and a terpolymer of nylon-6T, nylon-6,6 and nylon-6,12.
- 3. The flame-resistant polyamide resin composition according to claim 1, wherein .alpha. is 1.5 or more.
- 4. The flame-resistant polyamide resin composition according to claim 3, wherein .alpha. is 2.2 or more.
- 5. The flame-resistant polyamide resin composition according to claim 1, wherein the ratio of b to c is 0.5 or more.
- 6. The flame resistant polyamide resin composition according to claim 1, wherein component (B) is prepared by reacting a brominated polymer of an unsaturated compound having formula (1) with a compound having an anhydride acid group.
- 7. The flame-resistant polyamide resin composition according to claim 1, wherein said unsaturated compound is styrene.
- 8. The flame-resistant polyamide resin composition according to claim 1, wherein said unsaturated compound is .alpha.-methylstyrene of p-methylstyrene.
- 9. The flame resistant polyamide resin composition according to claim 1, wherein component (B) is formed by brominating a polymer prepared by reacting a polymer of an unsaturated compound having formula (1) with a compound having an anhydride acid group.
- 10. The flame-resistant polyamide resin composition according to claim 1, wherein the antimony compound is selected from the group consisting of antimony trioxide, antimony pentoxide and sodium antimonate.
- 11. The flame-resistant polyamide resin composition according to claim 10, wherein said antimony oxide is antimony trioxide.
- 12. The flame-resistant polyamide resin composition according to claim 11, wherein the antimony trioxide is present in an amount up to 15 parts by weight based on 100 parts by weight of the total amount of components (A), (B) and (C).
- 13. A flame-resistant polyamide resin composition consisting of:
- (A) a polyamide or a blend of polyamide with an aliphatic olefin polymer, a non-brominated styrene polymer, polyphenylene oxide, polycarbonate, polyethylene terephthalate or polyphenylene sulfide,
- (B) a flame retardant consisting of a modified brominated polymer having from 0.1 to 20 mole % of acid anhydride groups, based on the total moles of flame retardant (B), and a bromine content of from 50 to 80 wt. %, based on the total weight of flame retardant (B), said modified brominated polymer being a brominated copolymer of said unsaturated compound and an unsaturated compound having acid anhydride groups, wherein said unsaturated compound is represented by the formula (1): ##STR4## wherein R.sub.1 and R.sub.2, which may be the same or different each represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and k represents an integer of 5,
- (C) a flame retardant consisting of an unmodified brominated polystyrene, in which the bromine content is from 50 to 80 wt. %, based on the total weight of flame retardant (C), and
- (D) an antimony compound,
- said composition satisfying the following conditions:
- a+b+c=100
- 0. 5.ltoreq.b.ltoreq.35
- 0.ltoreq.c.ltoreq.34.5
- 5.ltoreq.b+c.ltoreq.35
- 0.1.ltoreq..alpha..ltoreq.20
- 14<((b)(0.01x))+((c)(0.01y))<20
- wherein a, b and c represent the amounts in weight % of components (A), (B) and (C), respectively, x and y represent the bromine contents in weight % of component (B) based on the total weight of flame retardant (B) and of component (C) based on the total weight of flame retardant (C), respectively, and g represents the total amount in mole % of the acid anhydride groups of component (B).
Priority Claims (3)
Number |
Date |
Country |
Kind |
63-59270 |
Mar 1988 |
JPX |
|
63-187825 |
Jul 1988 |
JPX |
|
63-187826 |
Jul 1988 |
JPX |
|
Parent Case Info
This application is a continuation, of application Ser. No. 08/139,103 filed on Oct. 21, 1993, now abandoned, which is a continuation-in-part of application Ser. No. 07/854,780 filed on Mar. 23, 1992, now abandoned, which is a continuation of application Ser. No. 07/323,797, filed on Mar. 15, 1989, now abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (9)
Number |
Date |
Country |
0047549 |
Aug 1983 |
EPX |
0276988 |
Mar 1988 |
EPX |
0270151 |
Aug 1988 |
EPX |
51-47044 |
Apr 1976 |
JPX |
51-47034 |
Apr 1976 |
JPX |
56-50931 |
May 1981 |
JPX |
57-53505 |
Mar 1982 |
JPX |
60-19517 |
Jan 1985 |
JPX |
61-34058 |
Feb 1986 |
JPX |
Non-Patent Literature Citations (8)
Entry |
Chemical Abstracts (1986) vol. 105, No. 6. |
English language abridgement of JP-A-51-47044. |
English language abridgement of JP-A-51-47034. |
English language abstract of JP-A-57-53505. |
English language abstract of JP-A-60-19517. |
English language abstract of JP-A-61-34058. |
English language abstract of JP-A-56-50931. |
English language abstract of JP-A-60-86162. |
Continuations (2)
|
Number |
Date |
Country |
Parent |
139103 |
Oct 1993 |
|
Parent |
323797 |
Mar 1989 |
|
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
854780 |
Mar 1992 |
|