US3686362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame resistant composition of abs, polyarylene polysulfone and bromo-aryl compound
Assignee: UNLROYAL Inc
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Filing: 1970-05-22
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Granted: 1972-08-22
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Expires: 1990-05-22
Abstract
Abstract Thermoplastic blend of ABS, polyarylene poly-sulfone resin (e.g. condensation product of the dipotassium salt of 2,2-bis-(4hydroxyphenyl) propane and 4,4''-dichlorodiphenyl-sulfone), and bromo-aryl compound (hexabromobenzene or hexabromodiphenylether), with or without antimony oxide, is self-extinguishing, has high heat distortion temperature, and good processing characteristics.
Inventors
- 👤 Paul D Hinckley
- 👤 Gerald J Klender
- 👤 Jerry F Lambiotte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:57
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/02; C08K5/03; C08L; C08L55/00; C08L55/02; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
24 words
A composition as in claim 1 in which at least 20 percent of the linkages between the arylene groups in (A) are sulfone groups.
Claim 2
Dependent Claim
86 words
A composition as in claim 1 wherein (A) is composed of recurring units having the formula -O-E-O-E''-wherein E is the residuum of a dihydric phenol and E'' is the residuum of a benzenoid compound having an inert electron withdrawing group in at least one of the positions ortho and para to the valence bonds, where both of said residua are valently bonded to the ether oxygens through aromatic carbon atoms, and at least one of E and E'' provide a sulfone linkage between aromatic carbon atoms.
Claim 3
Dependent Claim
90 words
A composition as in claim 1 wherein (A) is composed of recurring units having the formula: wherein R represents a member of the group consisting of a bond between aromatic carbon atoms and a divalent connecting radical and R'' represents sulfone, Y and Y1 each represent inert substituent groups selected from the group consisting of halogen, alkyl groups having from one to four carbon atoms and alkoxy groups having from one to four carbon atoms and where r and z are integers having a value from 0 to 4 inclusive.
Claim 4
Dependent Claim
16 words
A composition as in claim 1 wherein (A) is composed of recurring units of the formula:
Claim 5
Dependent Claim
21 words
A composition as in claim 1 in which at least a part of the styrene in (B) is replaced by alpha-methyl-styrene.
Claim 6
Dependent Claim
27 words
A composition as in claim 1 in which (B) comprises a graft copolymer of styrene and acrylonitrile on a rubbery spine selected from polybutadiene and butadiene-styrene copolymer.
Claim 7
Dependent Claim
19 words
A composition as in claim 1 wherein (A) amounts to 48-60 parts and (B) amounts to correspondingly 52-40 parts.
Claim 8
Dependent Claim
11 words
A composition as in claim 1 in which (C) is hexabromobenzene.
Claim 9
Dependent Claim
11 words
A composition as in claim 1 in which (C) is hexabromodiphenylether.
Claim 10
Dependent Claim
14 words
A composition as in claim 1 in which (C) is hexabromobenzene and antimony oxide.
Claim 11
Dependent Claim
14 words
A composition as in claim 1 in which (C) is hexabromodiphenylether and antimony oxide.
Claim 12
Dependent Claim
14 words
A composition as in claim 1 wherein (A) contains alkylidene linkages between arylene groups.
Claim 13
Dependent Claim
37 words
A composition as in claim 5 in which (B) comprises a mixture of (I) a graft copolymer of styrene and acrylonitrile on a rubbery spine selected from polybutadiene and butadiene-styrene copolymer, and (II) separately prepared alpha-methylstyrene-acrylonitrile resin.
Claim 14
Dependent Claim
11 words
A composition as in claim 14 in which (C) is hexabromobenzene.
Claim 15
Dependent Claim
11 words
A composition as in claim 14 in which (C) is hexabromodiphenylether.
Claim 16
Dependent Claim
14 words
A composition as in claim 14 in which (C) is hexabromobenzene and antimony oxide.
Claim 17
Dependent Claim
14 words
A composition as in claim 14 in which (C) is hexabromodiphenylether and antimony oxide.
Claim 18
Dependent Claim
14 words
A composition as in claim 7 in which (B) contains separately prepared alpha-methylstyrene-acrylonitrile resin.
Claim 19
Dependent Claim
25 words
A composition as in claim 19 wherein (A) amounts to 48-60 parts and (B) amounts to correspondingly 52-40 parts, and the bromo-aryl compound is hexabromobenzene.
Claim 20
Dependent Claim
25 words
A composition as in claim 19 wherein (A) amounts to 48-60 parts and (B) amounts to correspondingly 52-40 parts, and the bromo-aryl compound is hexabromodiphenylether.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |