EP0133641A1
Expired / Lapsed
EP
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Flame retardant thermoplastic polyester compositions
Assignee: General Electric Co
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Filing: 1984-06-18
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Granted: —
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Expires: 2004-06-18
Abstract
Abstract Thermoplastic compositions suitable for manufacture into flame retardant articles of various shapes and sizes are described. The compositions are admixtures of a polyester resin and a flame retardant agent comprised of a polyphenylene ether resin, an organic phosphate and a stable brominated material.
Inventors
- 👤 Joseph Elwood Betts
- 👤 Visvaldis Abolins
- 👤 Fred Frank Holub
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 05:42
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521; C08L; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
42 words
A thermoplastic composition comprising an admixture of: (a) a normally flammable thermoplastic linear polyester resin; and (b) an effective amount of a flame retardant agent which comprises (i) a polyphenylene ether resin, (ii) an organic phosphate, and (iii) a stable brominated material.
Claim 2
Dependent Claim
42 words
A thermoplastic composition comprising an admixture of: (a) a normally flammable thermoplastic linear polyester resin; and (b) an effective amount of a flame retardant agent which comprises (i) a polyphenylene ether resin, (ii) an organic phosphate, and (iii) a stable brominated material.
Claim 3
Dependent Claim
34 words
A composition according to Claim 1, in which component (a) is a polymeric glycol terephthalate or isophthalate having repeating units of the formula where n is a whole number of from two to ten.
Claim 4
Dependent Claim
14 words
A composition according to Claim 1, in which component (a) is poly(1,4-butylene terephthalate) resin.
Claim 5
Dependent Claim
14 words
A composition according to Claim 1, in which component (a) is poly(ethylene terephthalate) resin.
Claim 6
Dependent Claim
43 words
A composition according to Claim 1, in which the polyester, component (a), has an intrinsic viscosity in the range between about 0.2 and about 1.5 deciliters per gram measured in solution in ortho-chlorophenol or a 60:40 mixture of phenol/tetrachloroethane at 25° to 30°C.
Claim 7
Dependent Claim
59 words
A composition according to Claim 1, in which the polyphenylene ether resin, component (b)(i), has the formula wherein Q, Q', Q" and Q"', are independently selected from the group consisting of hydrogen, halogen, hydrocarbon radicals, halohydrocarbon radicals, hydrocarbonoxy radicals, and halohydrocarbonoxy radicals; and n represents the total number of monomer units and is an integer at least about 20.
Claim 8
Dependent Claim
13 words
A composition according to Claim 1, in which component (b)(i) is poly(2,6-dimethyl-l,4-phenylene) ether.
Claim 9
Dependent Claim
56 words
A composition according to Claim 1, in which the organic phosphate, component (b)(ii), is a compound having the formula where R is the same or different and is alkyl, cycloalkyl, aryl, alkyl substituted aryl, halogen substituted aryl, aryl substituted alkyl, halogen, or a combination of any of the foregoing, provided at least one R is aryl.
Claim 10
Dependent Claim
13 words
A composition according to Claim 1, in which component (b)(ii) is triphenyl phosphate.
Claim 11
Dependent Claim
13 words
A composition according to Claim 9, in which the triphenyl phosphate is isopropylated.
Claim 12
Dependent Claim
81 words
A composition according to Claim 1, in which component (b)(ii) is a di- or polyfunctional compound or polymer having the formula or and mixtures thereof, wherein R 1 , R 3 and R 5 are, independently, hydrocarbon; R2, R 4 , R 6 and R 7 are, independ- ently, hydrocarbon or hydrocarbonoxy; X 1 , X and X 3 are halogen; m and r are 0 or integers from 1 to 4, and n and p are from 1 to 30.
Claim 13
Dependent Claim
15 words
A composition according to Claim 11, in which (b)(ii) is bis diphenyl phosphate of resorcinol.
Claim 14
Dependent Claim
15 words
A composition according to Claim 11, in which (b)(ii) is bis diphenyl phosphate of hydroquinone.
Claim 15
Dependent Claim
14 words
A composition according to Claim 11, in which (b)(ii) is bis diphenyl phosphate of-bisphenol-A.
Claim 16
Dependent Claim
52 words
A composition according to Claim 1, in which component (b)(iii) is a compound having the formula where R' is alkylene, straight or branched, having from 1 to 10 carbon atoms; and q and s represent the total number of bromine atoms on each ring and are independently integers from 1 to 5.
Claim 17
Dependent Claim
13 words
A composition according to Claim 1, in which component (b)(iii) is 1,2-bis(2,4,6-tribromophenoxy) ethane.
Claim 18
Dependent Claim
14 words
A composition according to Claim 1, in which component (b)(iii) is 1,2-bis(2,3,4,5,6-pentabromo- phenoxy) ethane.
Claim 19
Dependent Claim
67 words
A composition according to Claim 1, in which component (b)(iii) is an aromatic carbonate copolymer having units of the formula in which R 1 and R 2 are hydrogen, (lower) alkyl or phenyl, X 1 and X 2 are bromo or chloro, and m and r are from 1 to 4, and units of the formula: in which R 1 and R 2 are as defined above.
Claim 20
Dependent Claim
14 words
A composition according to Claim 18, in which (b)(iii) is a tetrabromobisphenol-A oligomeric polycarbonate.
Claim 21
Dependent Claim
22 words
A composition according to Claim 1, in which the weight ratio of (b) (i) to (b) (ii) is between. 1:1 and 20:1.
Claim 22
Dependent Claim
52 words
A composition according to Claim 1, which comprises from about 5 to about 70 parts by weight of (b)(i), from about 1 to about 20 parts by weight of (b)(ii), and from about 1 to about 20 parts by weight of (b)(iii), based on 100 parts of (a) and (b) (i) combined.
Claim 23
Dependent Claim
14 words
A composition according to Claim 1, which also includes a synergistic agent for (b)(iii).
Claim 24
Dependent Claim
15 words
A composition according to Claim 22, in which the synergistic agent is an antimony compound.
Claim 25
Dependent Claim
14 words
A composition according to Claim 23, in which the antimony compound is antimony oxide.
Claim 26
Dependent Claim
12 words
A composition according to Claim 1, which includes a modifying elastomeric polymer.
Claim 27
Dependent Claim
17 words
A composition according to Claim 25, in which the modifying elastomeric polymer is a styrenebutadiene-styrene block copolymer.
Claim 28
Dependent Claim
18 words
A composition according to Claim 25, in which the modifying elastomeric polymer is a styrene- ethylene/butylene-styrene block copolymer.
Claim 29
Dependent Claim
17 words
A composition according to Claim 25, in which the modifying elastomeric polymer is a styreneisoprene-styrene block copolymer.
Claim 30
Dependent Claim
11 words
A composition according to Claim 1, which also includes a filler.
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Cited
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Cited
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