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Patent US4033931A successfully refreshed from Google Patents.
US4033931A
Expired / Lapsed
US
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Plastic compositions
Assignee: Great Lakes Chemical Corp
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Filing: 1973-02-08
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Granted: 1977-07-05
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Expires: 1993-02-08
Abstract
Abstract Plastic compositions containing polycarbonates and bisphenoxy compounds having the formula: ##STR1## WHEREIN Z is bromine, m and m' are each integers having a value of 1-5 and alkylene is a straight or branched chain alkylene group having 1 to 6 carbon atoms.
Inventors
- 👤 Arnold L. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:42
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
61 words
A plastic composition comprising a polycarbonate and a flame retardant, said flame retardant consisting of a compound having the formula ##STR7## wherein (a) Z is bromine; (b) m and m' are independent and are integers having a value of from 1 to 5; and (c) alkylene is a straight or branched chain alkylene group having from one to six carbon atoms.
Claim 2
Dependent Claim
61 words
A plastic composition comprising a polycarbonate and a flame retardant, said flame retardant consisting of a compound having the formula ##STR7## wherein (a) Z is bromine; (b) m and m' are independent and are integers having a value of from 1 to 5; and (c) alkylene is a straight or branched chain alkylene group having from one to six carbon atoms.
Claim 3
Dependent Claim
32 words
The composition as set forth in claim 1 wherein the amount of said compound employed is from about 5% to about 25% by weight, based on the total weight of said composition.
Claim 4
Dependent Claim
16 words
The composition as set forth in claim 2 wherein the alkylene group is CH 2 .
Claim 5
Dependent Claim
18 words
The composition as set forth in claim 2 wherein the alkylene group is (CH 2 ) 2 .
Claim 6
Dependent Claim
18 words
The composition as set forth in claim 2 wherein the alkylene group is (CH 2 ) 3 .
Claim 7
Dependent Claim
18 words
The composition as set forth in claim 2 wherein the alkylene group is (CH 2 ) 4 .
Claim 8
Dependent Claim
14 words
The composition as set forth in claim 2 wherein the alkylene group is ##STR8##
Claim 9
Dependent Claim
14 words
The composition as set forth in claim 2 wherein the alkylene group is ##STR9##
Claim 10
Dependent Claim
14 words
The composition as set forth in claim 2 wherein the alkylene group is ##STR10##
Claim 11
Dependent Claim
21 words
A plastic composition comprising a polycarbonate and a flame retardant, said flame retardant consisting of a compound having the formula ##STR11##
Claim 12
Dependent Claim
21 words
A plastic composition comprising a polycarbonate and a flame retardant, said flame retardant consisting of a compound having the formula ##STR11##
Claim 13
Dependent Claim
21 words
A plastic composition comprising a polycarbonate and a flame retardant, said flame retardant consisting of a compound having the formula ##STR12##
Claim 14
Dependent Claim
21 words
A plastic composition comprising a polycarbonate and a flame retardant, said flame retardant consisting of a compound having the formula ##STR12##
Claim 15
Dependent Claim
34 words
The composition as set forth in claim 1 wherein there is also present a flame retardant enhancing agent which promotes a cooperative effect with said compound to increase the flame retardancy of said composition.
Claim 16
Dependent Claim
15 words
The composition as set forth in claim 12 wherein said enhancing agent is antimony trioxide.
Claim 17
Dependent Claim
34 words
The composition as set forth in claim 10 wherein there is also present a flame retardant enhancing agent which promotes a cooperative effect with said compound to increase the flame retardancy of said composition.
Claim 18
Dependent Claim
14 words
The composition set forth in claim 14 wherein said enhancing agent is antimony trioxide.
References Cited (Backward Citations)
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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) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |