Patent US4743637A successfully refreshed from Google Patents.
US4743637A
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Flame retardant compounds and thermoplastic compositions containing the same
Assignee: General Electric Co
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Filing: 1986-08-01
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Granted: 1988-05-10
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Expires: 2006-08-01
Abstract
Abstract Novel flame retardant agents comprise polyalkylene oxides or a derivative thereof end-capped with brominated phthalimide groups, and have the general formulae R--R.sup.1 --O--R.sup.1).sub.n R (I) (R--R.sup.1 --O--R.sup.1).sub.n' NH).sub.2 C═O (II) or R--R.sup.1 --OR.sup.1).sub.n" CH.sub.2).sub.3 C--R.sup.2 (III) wherein R is ##STR1## R 1 is alkylene of from about 2 to about 6 carbon atoms; R 1 is alkyl of from about 1 to about 6 carbon atoms; n is from about 4 to about 40; n' is from about 3 to about 15; and n" is from about 1 to about 10. Thermoplastic compositions, for example, polyphenylene ether compositions, rendered flame retardant with the novel compounds have a high resistance to additive vaporization and surface liquid exudation as well as desirable high flow characteristics.
Inventors
- 👤 Robert J. Axelrod
- 👤 Donald B. G. Jaquiss
- 👤 John A. Tyrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:47
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/331; C08G65/332; C08G65/3324; C08G65/3326; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415; C08K5/3417; C08L; C08L67/00; C08L69/00; C08L71/00; C08L71/02; C08L71/08; C08L71/10; C08L71/12; C08L71/123; C08L77/00; C08L2201/00; C08L2201/02; C08L81/00
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
135 words
A flame retardant thermoplastic composition comprising (a) a normally flammable thermoplastic resin; and (b) an effective, flame retardant amount of either (i) a polyalkylene oxide or a derivative thereof end-capped with brominated phthalimide groups and being of the formulae R--R.sup.1 --O--R.sup.1).sub.n R (I), (R--R.sup.1 --O--R.sup.1).sub.n' NH).sub.2 C═O (II) or (R--R.sup.1 --OR.sup.1).sub.n" CH.sub.2).sub.3 C--R.sup.2 (III) wherein R is ##STR10## R 1 is alkylene of from about 2 to about 6 carbon atoms, R 2 is alkyl of from about 1 to about 6 carbon atoms; n is from about 4 to about 40; n' is from about 3 to about 15; n" is from about 1 to about 10; or (ii) a combination of a compound of formulae (I), (II) or (III) or a mixture of any of them and an inorganic or organic antimony-containing compound.
Claim 2
Dependent Claim
135 words
A flame retardant thermoplastic composition comprising (a) a normally flammable thermoplastic resin; and (b) an effective, flame retardant amount of either (i) a polyalkylene oxide or a derivative thereof end-capped with brominated phthalimide groups and being of the formulae R--R.sup.1 --O--R.sup.1).sub.n R (I), (R--R.sup.1 --O--R.sup.1).sub.n' NH).sub.2 C═O (II) or (R--R.sup.1 --OR.sup.1).sub.n" CH.sub.2).sub.3 C--R.sup.2 (III) wherein R is ##STR10## R 1 is alkylene of from about 2 to about 6 carbon atoms, R 2 is alkyl of from about 1 to about 6 carbon atoms; n is from about 4 to about 40; n' is from about 3 to about 15; n" is from about 1 to about 10; or (ii) a combination of a compound of formulae (I), (II) or (III) or a mixture of any of them and an inorganic or organic antimony-containing compound.
Claim 3
Dependent Claim
20 words
The flame retardant thermoplastic composition of claim 1 wherein, in formula (I), n is from about 5 to about 33.
Claim 4
Dependent Claim
20 words
The flame retardant thermoplastic composition of claim 1 wherein, in formula (II), n' is from about 4 to about 8.
Claim 5
Dependent Claim
20 words
The flame retardant thermoplastic compositions of claim 1, wherein, in formula (III), n" is from about 1.5 to about 2.5.
Claim 6
Dependent Claim
15 words
The flame retardant thermoplastic composition of claim 1 wherein R 1 is ethylene or propylene.
Claim 7
Dependent Claim
15 words
The flame retardant thermoplastic composition of claim 5 wherein R 1 is a ##STR11## group.
Claim 8
Dependent Claim
23 words
The flame retardant thermoplastic composition of claim 2 wherein said compound is selected from the group consisting of ##STR12## wherein R is ##STR13##
Claim 9
Dependent Claim
15 words
The flame retardant thermoplastic composition of claim 1 wherein the antimony-containing compound is antimony oxide.
Claim 10
Dependent Claim
24 words
The flame retardant thermoplastic composition of claim 1 which also includes a flame retardant agent which is different than that defined for component (b)(i).
Claim 11
Dependent Claim
75 words
The flame retardant thermoplastic composition claim 1 wherein said normally flammable thermoplastic resin is selected from: a polyphenylene ether or a mixture thereof with a polystyrene resin; a polymerization product of a vinyl monomer; a polymerization product of an olefin monomer; a polymerization product of an acrylic or methacrylic monomer; a polymerization product of a diene monomer; a polyamide; a cellulose ester; a polyester; an aromatic polycarbonate; or a mixture of any of the foregoing.
Claim 12
Dependent Claim
26 words
The flame retardant composition of claim 10, wherein said polyphenylene ether is a poly(2,6-dimethyl-1,4-phenylene)ether or a poly(2,6-dimethyl-1,4-phenylene-co-2,3,6-trimethyl-1,4-phenylene ether) or a mixture of both of the foregoing.
Claim 13
Dependent Claim
14 words
The flame retardant composition of claim 10 wherein said aromatic polycarbonate is poly(bisphenol-A carbonate).
Claim 14
Dependent Claim
30 words
The flame retardant composition of claim 10 wherein said polymerization product of a diene monomer is a polybutadiene or a rubbery copolymer of styrene and butadiene with acrylonitrile and styrene.
Claim 15
Dependent Claim
19 words
The flame retardant thermoplastic composition of claim 1 having a high resistance to additive vaporization and surface liquid exudation.
Claim 16
Dependent Claim
30 words
The flame retardant thermoplastic composition of claim 1 wherein the melting point temperature of component (b) is lower than the processing temperature of the normally flammable thermoplastic resin component (a).
Claim 17
Dependent Claim
19 words
The flame retardant thermoplastic composition of claim 15 wherein said melting point temperature is less than about 200° C.
Claim 18
Dependent Claim
19 words
The flame retardant thermoplastic composition of claim 15 wherein the melting point temperature is less than about 145° C.
Claim 19
Dependent Claim
19 words
The flame retardant thermoplastic composition of claim 15 wherein the melting point temperature is less than about 125° C.
Claim 20
Dependent Claim
22 words
The flame retardant thermoplastic composition of claim 15 wherein the melting point temperature is from about 80° C. to about 200° C.
Claim 21
Dependent Claim
21 words
The flame retardant thermoplastic composition of claim 1 wherein component (b) has a bromine content of less than about 55 percent.
Claim 22
Dependent Claim
21 words
The flame retardant thermoplastic composition of claim 1 wherein component (b) has a bromine content of less than about 37 percent.
Claim 23
Dependent Claim
21 words
The flame retardant thermoplastic composition of claim 1 wherein component (b) has a bromine content of less than about 35 percent.
Claim 24
Dependent Claim
21 words
The flame retardant thermoplastic composition of claim 1 wherein component (b) has a bromine content of less than about 22 percent.
Claim 25
Dependent Claim
32 words
The flame retardant thermoplastic composition of claim 1 wherein component (b) is present in an amount of less than about 25 parts by weight per 100 parts by weight of component (a).
Claim 26
Dependent Claim
32 words
The flame retardant thermoplastic composition of claim 1 wherein component (b) is present in an amount of less than about 15 parts by weight per 100 parts by weight of component (a).
Claim 27
Dependent Claim
37 words
The flame retardant thermoplastic composition of claim 1 wherein component (b) is present in an amount of from about 0.5 parts by weight to about 25 parts by weight per 100 parts by weight of component (a).
Claim 28
Dependent Claim
37 words
The flame retardant thermoplastic composition of claim 26 wherein component (b) is present in an amount of from about 0.5 parts by weight to about 15 parts by weight per 100 parts by weight of component (a).
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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) | 1991-05-10 | 1991-11-09 | 1992-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-10 | 1995-11-09 | 1996-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-10 | 1999-11-09 | 2000-05-10 | $7700.00 | Window Closed / Lapsed |