US4222910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-retardant polycarbonate composition
Assignee: Teijin Ltd
•
Filing: 1978-11-07
•
Granted: 1980-09-16
•
Expires: 1998-11-07
Abstract
Abstract A resin composition having an excellent fire retarding effect is provided which comprises (1) a polycarbonate and (2) as a fire retardant, at least one member of the group consisting of (A) a metal salt of a sulfuric ester of an alcohol, (B) an ether derived from an alkyl alcohol and a phenol and having a metal sulfonate group bonded to the carbon atom of the alkyl group and (C) a polycarbonate having at least one alkali metal sulfonate group bonded to the terminals through alkyl. Addition of a mixture of the component (A) and at least one specified halogen-containing organic compound as the fire retardant to the polycarbonate (1) affords a resin composition having a greater fire retardant effect.
Inventors
- 👤 Toshimasa Tokuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:45
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08L; C08L27/00; C08L27/02; C08L27/12; C08L69/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
147 words
A fire retardant composition comprising (1) a polycarbonate produced by the reaction of a dihydric phenol with phosgene or a carbonic acid diester, and (2) as a fire retardant, a metallic salt of a sulfuric ester of at least one alcohol selected from the group consisting of (a) a monohydric alcohol having from 1 to 30 carbons, and (b) a polyhydric alcohol having from 2 to 40 carbons wherein said metallic salt is selected from the group consisting of a sodium salt and a potassium salt; said monohydric alcohol is selected from the group consisting of an unsubstituted hydrocarbyl alkanol, a polyoxyethylene alkyl ether alcohol, and a polyoxyethylene alkylphenyl ether alcohol; and said polyhydric alcohol is selected from the group consisting of an unsubstituted hydrocarbyl alkanol having 2 to 4 hydroxyl groups, ethylene glycol monolaurate, propylene glycol monostearate, glycerol monolaurate, glycerol monopalmitate, glycerol monostearate and glycerol 1,3-bis(s-ethylhexyl)ether.
Claim 2
Dependent Claim
147 words
A fire retardant composition comprising (1) a polycarbonate produced by the reaction of a dihydric phenol with phosgene or a carbonic acid diester, and (2) as a fire retardant, a metallic salt of a sulfuric ester of at least one alcohol selected from the group consisting of (a) a monohydric alcohol having from 1 to 30 carbons, and (b) a polyhydric alcohol having from 2 to 40 carbons wherein said metallic salt is selected from the group consisting of a sodium salt and a potassium salt; said monohydric alcohol is selected from the group consisting of an unsubstituted hydrocarbyl alkanol, a polyoxyethylene alkyl ether alcohol, and a polyoxyethylene alkylphenyl ether alcohol; and said polyhydric alcohol is selected from the group consisting of an unsubstituted hydrocarbyl alkanol having 2 to 4 hydroxyl groups, ethylene glycol monolaurate, propylene glycol monostearate, glycerol monolaurate, glycerol monopalmitate, glycerol monostearate and glycerol 1,3-bis(s-ethylhexyl)ether.
Claim 3
Dependent Claim
14 words
The fire retardant composition of claim 1 wherein the dihydric phenol is a bisphenol.
Claim 4
Dependent Claim
12 words
The fire retardant composition of claim 2, wherein the bisphenol is 2,2-bis(4-hydroxyphenyl)propane.
Claim 5
Dependent Claim
16 words
The fire retardant composition of claim 1, wherein the monohydric alcohol is an unsubstituted hydrocarbyl alkanol.
Claim 6
Dependent Claim
27 words
The fire retardant composition of claim 4, wherein the alkanol is selected from the group consisting of an alkyl alcohol, a cycloalkyl alcohol and an aralkyl alcohol.
Claim 7
Dependent Claim
22 words
The fire retardant composition of claim 1, wherein the polyhydric alcohol is an unsubstituted hydrocarbyl alkanol having 2 to 4 hydroxy groups.
Claim 8
Dependent Claim
21 words
The fire retardant composition of claim 6, wherein the alkanol is selected from the group consisting of glycol, glycerol and pentaerythritol.
Claim 9
Dependent Claim
15 words
The fire retardant composition of claim 1, wherein the metallic salt is a sodium salt.
Claim 10
Dependent Claim
15 words
The fire retardant composition of claim 1, wherein the metallic salt is a potassium salt.
References Cited (Backward Citations)
US3365517A
Cited
US3855277A
Cited
US3978024A
Cited
US4032506A
Cited
US4020045A
Cited
US4123475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |