US4032509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire retardant styrenic terpolymer compositions
Assignee: Monsanto Co
•
Filing: 1975-12-29
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Granted: 1977-06-28
•
Expires: 1995-12-29
Abstract
Abstract Disclosed herein are fire retardant polymer compositions based on interpolymers of styrene, maleic anhydride and a brominated monomer such as tribromophenyl acrylate, which have been formulated with various additives. These compositions, which have a UL-94 rating of at least V-1, are especially useful for use in radio and T.V. cabinets, furniture, appliance housings and other similar applications.
Inventors
- 👤 Yoon C. Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:45
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/2279; C08K13/00; C08K13/02; C08K3/01; C08K3/016; C08K3/24; C08K3/26; C08K3/38; C08K5/00; C08K5/02; C08K5/03
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
4 words
A molding composition comprising:
Claim 2
Dependent Claim
4 words
A molding composition comprising:
Claim 3
Dependent Claim
97 words
(A) from 48 to 94 percent by weight based on the total weight of the molding composition of a polymer which is the interpolymerization product of: (1) from 55 to 90 percent by weight of a styrene monomer; (2) from 5 to 25 percent by weight of a maleic anhydride monomer; and (3) from 5 to 20 percent by weight of a brominated monomer selected from the group consisting of bromophenyl acrylates, bromophenyl methacrylates, bromoneopentyl acrylate and bromoneopentyl methacrylates, with the proviso that the amount of bromine in the polymer is at least 3 percent by weight;
Claim 4
Dependent Claim
97 words
(A) from 48 to 94 percent by weight based on the total weight of the molding composition of a polymer which is the interpolymerization product of: (1) from 55 to 90 percent by weight of a styrene monomer; (2) from 5 to 25 percent by weight of a maleic anhydride monomer; and (3) from 5 to 20 percent by weight of a brominated monomer selected from the group consisting of bromophenyl acrylates, bromophenyl methacrylates, bromoneopentyl acrylate and bromoneopentyl methacrylates, with the proviso that the amount of bromine in the polymer is at least 3 percent by weight;
Claim 5
Dependent Claim
21 words
(B) from 3 to 12 percent by weight based on the total weight of the molding composition of a metal oxide;
Claim 6
Dependent Claim
21 words
(B) from 3 to 12 percent by weight based on the total weight of the molding composition of a metal oxide;
Claim 7
Dependent Claim
36 words
(C) from 3 to 25 percent by weight based on the total weight of the molding composition of a smoke suppressant which is selected from the group consisting of smoke suppressing hydrates, carbonates and borates; and
Claim 8
Dependent Claim
36 words
(C) from 3 to 25 percent by weight based on the total weight of the molding composition of a smoke suppressant which is selected from the group consisting of smoke suppressing hydrates, carbonates and borates; and
Claim 9
Dependent Claim
15 words
(D) from 0 to 15 percent by weight of a brominated aromatic fire retardant additive.
Claim 10
Dependent Claim
15 words
(D) from 0 to 15 percent by weight of a brominated aromatic fire retardant additive.
Claim 11
Dependent Claim
23 words
A molding composition as in claim 1 wherein the styrene monomer is selected from the group consisting of styrene, alpha-methyl styrene or chlorostyrene.
Claim 12
Dependent Claim
15 words
A molding composition as in claim 2 wherein the brominated monomer contains three bromine atoms.
Claim 13
Dependent Claim
14 words
A molding composition as in claim 2 wherein the brominated monomer is tribromophenyl acrylate.
Claim 14
Dependent Claim
14 words
A molding composition as in claim 2 wherein the brominated monomer is tribromoneopentyl methacrylate.
Claim 15
Dependent Claim
14 words
A molding composition as in claim 1 wherein the metal oxide is antimony oxide.
Claim 16
Dependent Claim
36 words
A molding composition as in claim 1 wherein the smoke suppressant is selected from the group consisting of magnesium carbonate, dawsonite and mixtures thereof wherein the ratio of magnesium carbonate to dawsonite is at least 1:1.
Claim 17
Dependent Claim
24 words
A molding composition as in claim 1 which further contains from 3 to 12 percent by weight of a brominated aromatic fire retardant additive.
Claim 18
Dependent Claim
4 words
A molding composition comprising:
Claim 19
Dependent Claim
4 words
A molding composition comprising:
Claim 20
Dependent Claim
111 words
(A) from 61 to 90 percent by weight based on the total weight of the molding composition of a polymer which is the interpolymerization product of: (1) from 60 to 83 percent by weight of a styrene monomer selected from the group consisting of styrene, alpha-methyl styrene or chlorostyrene and mixtures thereof; (2) from 7 to 20 percent by weight of a maleic anhydride monomer; and (3) from 10 to 20 percent by weight of a brominated monomer selected from the group consisting of tribromophenyl acrylate, tribromophenyl methacrylate, tribromoneopentyl acrylate and bromoneopentyl methacrylate, with the proviso that the amount of bromine in the polymer is at least 6 percent by weight;
Claim 21
Dependent Claim
111 words
(A) from 61 to 90 percent by weight based on the total weight of the molding composition of a polymer which is the interpolymerization product of: (1) from 60 to 83 percent by weight of a styrene monomer selected from the group consisting of styrene, alpha-methyl styrene or chlorostyrene and mixtures thereof; (2) from 7 to 20 percent by weight of a maleic anhydride monomer; and (3) from 10 to 20 percent by weight of a brominated monomer selected from the group consisting of tribromophenyl acrylate, tribromophenyl methacrylate, tribromoneopentyl acrylate and bromoneopentyl methacrylate, with the proviso that the amount of bromine in the polymer is at least 6 percent by weight;
Claim 22
Dependent Claim
23 words
(B) from 4 to 12 percent by weight based on the total weight of the molding composition of brominated aromatic fire retardant additive;
Claim 23
Dependent Claim
23 words
(B) from 4 to 12 percent by weight based on the total weight of the molding composition of brominated aromatic fire retardant additive;
Claim 24
Dependent Claim
20 words
(C) from 3 to 12 percent by weight based on the total weight of the molding composition of antimony oxide;
Claim 25
Dependent Claim
20 words
(C) from 3 to 12 percent by weight based on the total weight of the molding composition of antimony oxide;
Claim 26
Dependent Claim
47 words
(D) from 3 to 15 percent by weight based on the total weight of the molding composition of a smoke suppressant which is selected from the group consisting of magnesium carbonate, dawsonite and mixtures thereof wherein the ratio of magnesium carbonate to dawsonite is at least 1:1.
Claim 27
Dependent Claim
47 words
(D) from 3 to 15 percent by weight based on the total weight of the molding composition of a smoke suppressant which is selected from the group consisting of magnesium carbonate, dawsonite and mixtures thereof wherein the ratio of magnesium carbonate to dawsonite is at least 1:1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |