US4587310A
Expired / Lapsed
US
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Carbonate polymes containing a polyether polyol metal salt complex
Assignee: Dow Chemical Co
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Filing: 1985-06-03
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Granted: 1986-05-06
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Expires: 2005-06-03
Abstract
Abstract Ignition resistant carbonate polymers are made by incorporating a metal salt complex of polyether polyols into the polymer. The carbonate polymers are transparent with low haze and still have high ignition resistance. The ignition resistance can be improved by the addition aromatic compound.
Inventors
- 👤 Samual A. Ogoe
- 👤 Kevin F. Dick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:26
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/02; C08L69/00
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
66 words
A transparent ignition resistant polymeric composition which comprises (A) a carbonate polymer, and (B) a polyether polyol metal salt complex in an amount effective to give a significant increase in ignition resistance wherein said metal salt comprises a halogen containing anion, and a metal cation wherein the metal is an alkali or alkaline earth metal and wherein said polyol has a molecular weight greater than 800.
Claim 2
Dependent Claim
66 words
A transparent ignition resistant polymeric composition which comprises (A) a carbonate polymer, and (B) a polyether polyol metal salt complex in an amount effective to give a significant increase in ignition resistance wherein said metal salt comprises a halogen containing anion, and a metal cation wherein the metal is an alkali or alkaline earth metal and wherein said polyol has a molecular weight greater than 800.
Claim 3
Dependent Claim
23 words
The composition of claim 1 wherein the amount of said complex is 0.0001 to 10 percent by weight based on said carbonate polymer.
Claim 4
Dependent Claim
39 words
The composition of claim 1 wherein said polyol is a block or random copolymer derived from alkylene oxides of 2 to 4 carbon atoms having a weight average molecular weight in the range from about 1000 to about 50,000.
Claim 5
Dependent Claim
35 words
The composition of claim 1 wherein said polyol is a homopolymer of alkylene oxides of 2 to 3 carbon atoms having a weight average molecular weight in the range from about 1000 to about 10,000.
Claim 6
Dependent Claim
15 words
The composition of claim 1 wherein said metal salt is a sodium or potassium halide.
Claim 7
Dependent Claim
12 words
The composition of claim 5 wherein said metal salt is potassium bromide.
Claim 8
Dependent Claim
12 words
The composition of claim 5 wherein said metal salt is sodium bromide.
Claim 9
Dependent Claim
61 words
A transparent ignition resistant polymeric composition which comprises (A) A carbonate polymer, and (B) About 0.005 to about 2 weight percent based on said polymer of a polyether polyol metal salt complex wherein said polyol is made from ethylene oxide and has a molecular weight range from about 6,000 to about 10,000, and wherein said salt is sodium or potassium halide.
Claim 10
Dependent Claim
61 words
A transparent ignition resistant polymeric composition which comprises (A) A carbonate polymer, and (B) About 0.005 to about 2 weight percent based on said polymer of a polyether polyol metal salt complex wherein said polyol is made from ethylene oxide and has a molecular weight range from about 6,000 to about 10,000, and wherein said salt is sodium or potassium halide.
Claim 11
Dependent Claim
12 words
The composition of claim 8 wherein said metal salt is potassium bromide.
Claim 12
Dependent Claim
12 words
The composition of claim 8 wherein said metal salt is sodium bromide.
Claim 13
Dependent Claim
20 words
The composition of claim 1 which has in addition an effective amount of a monomeric or polymeric halogenated aromatic compound.
Claim 14
Dependent Claim
34 words
The composition of claim 11 wherein the amount of said aromatic compound is such that the final aromatic halogen content in said composition is in the range from 0.01 to 10 percent by weight.
Claim 15
Dependent Claim
39 words
The composition of claim 11 wherein said polyol is a block or random copolymer derived from alkylene oxides of 2 to 4 carbon atoms having a weight average molecular weight in the range from about 1000 to about 50,000.
Claim 16
Dependent Claim
35 words
The composition of claim 11 wherein said polyol is a homopolymer of alkylene oxides of 2 to 3 carbon atoms having a weight average molecular weight in the range from about 1000 to about 10,000.
Claim 17
Dependent Claim
15 words
The composition of claim 11 wherein said metal salt is a sodium or potassium halide.
Claim 18
Dependent Claim
12 words
The composition of claim 15 wherein said metal salt is potassium bromide.
Claim 19
Dependent Claim
12 words
The composition of claim 15 wherein said metal salt is sodium bromide.
Claim 20
Dependent Claim
74 words
An ignition resistant polymeric composition which comprises (A) A carbonate polymer, (B) About 0.005 to 2 weight percent based on said polymer of a polyether polyol metal salt complex wherein said polyol is made from ethylene oxide and has a molecular weight range from about 6,000 to about 10,000, wherein said salt is sodium or potassium halide, and (C) About 0.1 to about 1.0 weight percent based on said polymer of a polybrominated polycarbonate.
Claim 21
Dependent Claim
74 words
An ignition resistant polymeric composition which comprises (A) A carbonate polymer, (B) About 0.005 to 2 weight percent based on said polymer of a polyether polyol metal salt complex wherein said polyol is made from ethylene oxide and has a molecular weight range from about 6,000 to about 10,000, wherein said salt is sodium or potassium halide, and (C) About 0.1 to about 1.0 weight percent based on said polymer of a polybrominated polycarbonate.
Claim 22
Dependent Claim
12 words
The composition of claim 18 wherein said metal salt is potassium bromide.
Claim 23
Dependent Claim
12 words
The composition of claim 18 wherein said metal salt is sodium bromide.
References Cited (Backward Citations)
US4200701A
Cited
US4439566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1989-05-05 | 1989-11-04 | 1990-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-05 | 1993-11-04 | 1994-05-06 | $3760.00 | Window Closed / Lapsed |
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