EP0129825A2
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EP
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Modified blends of polyphenylene ether resin and a polyamide
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 blends of a polyphenylene ether and a polyamide are described in which the two resins are blended over a broad range of amounts in the presence of an organic phosphate. The compositions can be formulated to be flame retardancy enhanced, and in optional embodiments they contain a stable, relatively non-volatile bromine material for further improvements in the flame retardancy.
Inventors
- 👤 Visvaldis Abolins
- 👤 Joseph Elwood Betts
- 👤 Fred Frank Holub
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 20:11
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521; C08L; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123; C08L77/00
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
51 words
A thermoplastic composition comprising an admixture of (a) not less than 30 parts by weight of a polyamide resin based on 100 parts of (a) and (b) together; (b) a polyphenylene ether resin; and (c) an amount of an organic phosphate sufficient to effect a compatible mixture of (a) and (b).
Claim 2
Dependent Claim
51 words
A thermoplastic composition comprising an admixture of (a) not less than 30 parts by weight of a polyamide resin based on 100 parts of (a) and (b) together; (b) a polyphenylene ether resin; and (c) an amount of an organic phosphate sufficient to effect a compatible mixture of (a) and (b).
Claim 3
Dependent Claim
24 words
A composition according to Claim 1, in which (a) and (b) are present in a weight ratio in the range between 30:70 and 70:30.
Claim 4
Dependent Claim
16 words
A composition according to Claim 1, in which the organic phosphate, (c), is also flame retardant.
Claim 5
Dependent Claim
27 words
A composition according to Claim 1, comprising from about 1 to about 20 parts by weight of (c), based on 100 parts of (a) and (b) combined.
Claim 6
Dependent Claim
20 words
A composition according to Claim 1, in which polyamide (a) contains linkages of the formula in the main polymer chain.
Claim 7
Dependent Claim
18 words
A composition according to Claim 1, in which polyamide (a) is selected from among polycaprolactam,polyundecanolactam and polyhexamethylene adipamide.
Claim 8
Dependent Claim
63 words
A composition according to Claim 1, in which polyphenylene ether (b) is a homo- or copolymer having units of 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 9
Dependent Claim
13 words
A composition according to Claim 1, in which component (b) is poly(2,6-dimethyl-l,4-phenylene) ether.
Claim 10
Dependent Claim
51 words
A composition according to Claim 1, in which component (c) has the formula wherein R is the same or different and can be alkyl, cycloalkyl, aryl, alkyl substituted aryl, halogen substituted aryl, aryl substituted alkyl, halogen, and combinations of any of the foregoing, provided that at least one R is aryl.
Claim 11
Dependent Claim
12 words
A composition according to Claim 1, in which (c) is triphenyl phosphate.
Claim 12
Dependent Claim
13 words
A composition according to Claim 10, in which the triphenyl phosphate is isopropylated.
Claim 13
Dependent Claim
80 words
A composition according to Claim 1, in which component (c) is a di- or polyfunctional compound or polymer having the formula and mixtures thereof, wherein R 1 , R 3 and R 5 are, independently, hydrocarbon; R 2 , R 4 , R 6 and R 7 are, independently, hydrocarbon or hydrocarbonoxy;X , X 2 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 14
Dependent Claim
16 words
A composition according to Claim 12, in which component (c) is bis diphenyl phosphate of resorcinol.
Claim 15
Dependent Claim
16 words
A composition according to Claim 12, in which component (c) is bis diphenyl phosphate of hydroquinone.
Claim 16
Dependent Claim
16 words
A composition according to Claim 12, in which component (c) is bis diphenyl phosphate of bisphenol-A.
Claim 17
Dependent Claim
19 words
A composition according to Claim 1, which additionally contains (d) an amount of a stable flame retardant brominated material.
Claim 18
Dependent Claim
56 words
A composition according to Claim 16, in which the brominated material, (d) is a bisphenoxy alkane of the formula where R' is alkylene, straight or branched, having from 1 to about 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 19
Dependent Claim
15 words
A composition according to Claim 17, in which (d) is l,2-bis(2,4,6-tribromophenoxy) ethane or l,2-bis(2,3,4,5,6-pentabromophenoxy) ethane.
Claim 20
Dependent Claim
66 words
A composition according to Claim 16, in which component (d) is an aromatic polycarbonate 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 fo the formula: in which R 1 and R 2 are as defined above.
Claim 21
Dependent Claim
14 words
A composition according to Claim 19, in which (d) is a tetrabisphenol-A oligomeric polycarbonate.
Claim 22
Dependent Claim
14 words
A composition according to Claim 16, which also includes a synergistic agent for (d).
Claim 23
Dependent Claim
15 words
A composition according to Claim 21, in which the synergistic agent is an antimony compound.
Claim 24
Dependent Claim
14 words
A composition according to Claim 22, in which the antimony compound is antimony oxide.
Claim 25
Dependent Claim
11 words
A composition according to Claim 1, which also includes a filler.
References Cited (Backward Citations)
No citation records indexed.
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