US4741864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultraviolet light stable flame retarded polycarbonate blends
Assignee: General Electric Co
•
Filing: 1985-10-07
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Granted: 1988-05-03
•
Expires: 2005-10-07
Abstract
Abstract Discoloration in aromatic carbonate polymers brought about by the addition of halogenated flame retardants is counteracted by the further addition of aliphatic polyester.
Inventors
- 👤 Roger W. Avakian
- 👤 Ronald J. Wroczynski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:32
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/02; C08K5/03; C08L; C08L69/00; C08L69/005; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
57 words
A flame retarded aromatic carbonate polymer composition having improved color stability to UV radiation comprising a. an aromatic carbonate polymer selected from the group consisting of aromatic polycarbonate and aromatic poly(ester-carbonate); b. an amount of halogenated aromatic flame retardant effective for flame retardance; and c. an amount of at least one aliphatic polyester effective for color stability.
Claim 2
Dependent Claim
57 words
A flame retarded aromatic carbonate polymer composition having improved color stability to UV radiation comprising a. an aromatic carbonate polymer selected from the group consisting of aromatic polycarbonate and aromatic poly(ester-carbonate); b. an amount of halogenated aromatic flame retardant effective for flame retardance; and c. an amount of at least one aliphatic polyester effective for color stability.
Claim 3
Dependent Claim
13 words
The composition of claim 1 wherein said aromatic carbonate polymer is aromatic polycarbonate.
Claim 4
Dependent Claim
14 words
The composition of claim 1 wherein said aromatic carbonate polymer is an aromatic poly(ester-carbonate).
Claim 5
Dependent Claim
12 words
The composition of claim 1 which additionally contains a filamentaous glass reinforcement.
Claim 6
Dependent Claim
25 words
The composition of claim 1 which additionally contains up to 80 weight parts of another thermoplastic resin per 20 weight parts said aromatic carbonate polymer.
Claim 7
Dependent Claim
11 words
The composition of claim 1 which additionally contains an impact modifier.
Claim 8
Dependent Claim
50 words
The composition of claim 1 wherein said aliphatic polyester comprises the reaction products of members selected from the group consisting of hydroxy-containing acids, diacids, diols, and mixtures thereof wherein said hydroxy-containing acids, said diacids, and said diols comprise at least 50% by number aliphatic non-alicyclic hydroxy-containing acids, diacids and diols.
Claim 9
Dependent Claim
19 words
The composition of claim 7 wherein said hydroxycontaining acids, said diacids, and said diols are entirely aliphatic and non-alicylic.
Claim 10
Dependent Claim
15 words
The composition of claim 7 wherein said aliphatic polyester comprises reaction products of hydroxy-containing acids.
Claim 11
Dependent Claim
29 words
The composition of claim 9 wherein said aliphatic polyester consists essentially of the reaction products of said hydroxy-containing acids and a polyfunctional alcohol with 2 or more hydroxy functionalities.
Claim 12
Dependent Claim
18 words
The composition of claim 7 wherein said aliphatic polyester comprises the reaction products of said diacids and diols.
Claim 13
Dependent Claim
21 words
A composition of claim 11 wherein said aliphatic polyester consists essentially of the reaction produce of said diacids and said diols.
Claim 14
Dependent Claim
28 words
The composition of claim 1 which contains from about 1/2 weight parts to about 20 weight parts aliphatic polyester for each 100 parts by weight total resin content.
Claim 15
Dependent Claim
57 words
A flame retarded aromatic carbonate polymer composition having improved color stability to UV radiation comprising a. an aromatic carbonate polymer selected from the group consisting of aromatic polycarbonate and aromatic poly(ester-carbonate); b. an amount of brominated aromatic flame retardant effective for flame retardance; and c. an amount of at least one aliphatic polyester effective for color stability.
Claim 16
Dependent Claim
57 words
A flame retarded aromatic carbonate polymer composition having improved color stability to UV radiation comprising a. an aromatic carbonate polymer selected from the group consisting of aromatic polycarbonate and aromatic poly(ester-carbonate); b. an amount of brominated aromatic flame retardant effective for flame retardance; and c. an amount of at least one aliphatic polyester effective for color stability.
Claim 17
Dependent Claim
39 words
a composition that is in claim 1 wherein the aromatic carbonate polymer is poly(bisphenol-A-carbonate) resin; the brominated flame retardant is poly(bisphenol-A-tetrabromo bisphenol-a-carbonate) resin and the aliphatic polyester is selected from the group consisting of (poly-epsilon-caprolactone) resin and poly(ethylene glycol-1,4-butanediol-adipate).
References Cited (Backward Citations)
US3852393A
Cited
US3953650A
Cited
US3957905A
Cited
US4028335A
Cited
US4155949A
Cited
US4177181A
Cited
US4205018A
Cited
US4256627A
Cited
US4285855A
Cited
US4222910A
Cited
US4316838A
Cited
US4209427A
Cited
US4152348A
Cited
US4256625A
Cited
US4267095A
Cited
US4223100A
Cited
US4346188A
Cited
US4366279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-03 | 1991-11-02 | 1992-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-03 | 1995-11-02 | 1996-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-03 | 1999-11-02 | 2000-05-03 | $7700.00 | Window Closed / Lapsed |