US5122575A
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US
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Preparation of functionalized polyphenylene ether using copolymers of dicarboxylic acids and salicylic acids
Assignee: SABIC Global Technologies BV
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Filing: 1991-02-04
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Granted: 1992-06-16
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Expires: 2011-02-04
Abstract
Abstract A composition and method of making polyphenylene ethers capped by copolymers of salicylic acid and dicarboxylic acid by reacting at least one polyphenylene ether with at least one of the aforementioned copolymers. The composition is useful to form copolymers capable of compatibilizing blends of polyphenylene ethers and polyetherimides.
Inventors
- 👤 Dwain M. White
- 👤 Laura A. Socha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:24
CPC Classifications
C; C08; C08G; C08G81/00; C08G65/00; C08G65/34; C08G65/48; C08G65/485; C08L; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/126; C08L67/00; Y; Y10; Y10S; Y10S525/00; Y10S525/905
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
111 words
A composition comprising polyphenylene ether molecules having end groups of a preformed copolymer prepared from a salicylic acid and dicarboxylic acid, said preformed copolymer having the formula ##STR8## wherein R is ##STR9## --(CH 2 ) m --or trans --CH═CH--Z is hydrogen or COCH 3 , x, y and n are independently greater than or equal to one and each Q 1 is independently halogen, primary or secondary lower alkyl, phenyl, haloalkyl, aminoalkyl, hydrocarbonoxy or halohydrocarbonoxy wherein at least two carbon atoms separate the halogen and oxygen atoms; and each Q 2 is independently hydrogen, halogen, primary or secondary lower alkyl, phenyl, haloalkyl, hydrocarbonoxy or halohydrocarbonoxy as defined for Q 1 .
Claim 2
Dependent Claim
111 words
A composition comprising polyphenylene ether molecules having end groups of a preformed copolymer prepared from a salicylic acid and dicarboxylic acid, said preformed copolymer having the formula ##STR8## wherein R is ##STR9## --(CH 2 ) m --or trans --CH═CH--Z is hydrogen or COCH 3 , x, y and n are independently greater than or equal to one and each Q 1 is independently halogen, primary or secondary lower alkyl, phenyl, haloalkyl, aminoalkyl, hydrocarbonoxy or halohydrocarbonoxy wherein at least two carbon atoms separate the halogen and oxygen atoms; and each Q 2 is independently hydrogen, halogen, primary or secondary lower alkyl, phenyl, haloalkyl, hydrocarbonoxy or halohydrocarbonoxy as defined for Q 1 .
Claim 3
Dependent Claim
15 words
A composition according to claim 1 wherein the polyphenylene ether is poly (2,6-dimethyl -1,4-phenylene ether).
Claim 4
Independent Claim
35 words
A method for capping a polyphenylene ether comprising contacting at a temperature in the range of about 250°-350° C. at least one polyphenylene ether with a preformed copolymer made from salicylic acid and dicarboxylic acid.
Claim 5
Independent Claim
35 words
A method for capping a polyphenylene ether comprising contacting at a temperature in the range of about 250°-350° C. at least one polyphenylene ether with a preformed copolymer made from salicylic acid and dicarboxylic acid.
Claim 6
Dependent Claim
13 words
A method according to claim 3 wherein the polyphenylene ether is poly(2,6-dimethyl-1,4-phenylene ether).
Claim 7
Dependent Claim
40 words
A method according to claim 3 wherein the copolymer has structural units of the formula ##STR10## wherein R is is ##STR11## --(CH 2 ) m --or trans --CH═CH--and x, y and n, are independently greater than or equal to one.
Claim 8
Dependent Claim
32 words
A method according to claim 3 wherein the dicarboxylic acid is selected from the group consisting of isophthalic acid, terephthalic acid, fumaric acid and aliphatic acids having at least 7 carbon atoms.
Claim 9
Dependent Claim
13 words
A method according to claim 3 wherein the conditions of contact include extrusion.
Claim 10
Dependent Claim
22 words
A method according to claim 3 wherein the preformed copolymer is extruded with at least one pre-extruded with vacuum venting polyphenylene ether.
Claim 11
Dependent Claim
77 words
A method according to claim 3 wherein the polyphenylene ether comprises structural units of the formula ##STR12## and in each of the units independently, each Q 1 is independently halogen, primary or secondary lower alkyl, phenyl, haloalkyl, aminoalkyl, hydrocarbonoxy or halohydrocarbonoxy wherein at least two carbon atoms separate the halogen and oxygen atoms; and each Q 2 is independently hydrogen, halogen, primary or secondary lower alkyl, phenyl, haloalkyl, hydrocarbonoxy or halohydrocarbonoxy as defined for Q 1 .
Claim 12
Dependent Claim
28 words
A method according to claim 7 wherein the amount of preformed salicylate/dicarboxylate copolymer present is about 1% to about 10% based on weight of the polyphenylene ether present.
Claim 13
Dependent Claim
21 words
A method according to claim 3 wherein the molar ratio of salicylate to dicarboxylate ranges from about 3:1 to about 1:3.
Claim 14
Dependent Claim
21 words
A composition prepared by reacting at least one polyphenylene ether with a preformed copolymer made from salicylic acid and dicarboxylic acid.
Claim 15
Dependent Claim
21 words
A composition prepared by reacting at least one polyphenylene ether with a preformed copolymer made from salicylic acid and dicarboxylic acid.
Claim 16
Dependent Claim
23 words
A composition according to claim 2 wherein the preformed copolymer made from salicylic acid and dicarboxylic acid is extruded with the polyphenylene ether.
Claim 17
Dependent Claim
26 words
A composition according to claim 13 wherein the preformed copolymer made from salicylic acid and dicarboxylic acid is extruded with at least one pre-extruded polyphenylene ether.
Claim 18
Dependent Claim
32 words
A composition according to claim 13 wherein the dicarboxylic acid is selected from the group consisting of isophathalic acid, terephthalic acid, fumaric acid and aliphatic acids having at least 6 carbon atoms.
Claim 19
Dependent Claim
77 words
A composition according to claim 13 wherein the polyphenylene ether comprises structural units of the formula ##STR13## and in each of the units independently, each Q 1 is independently halogen, primary or secondary lower alkyl, phenyl, haloalkyl, aminoalkyl, hydrocarbonoxy or halohydrocarbonoxy wherein at least two carbon atoms separate the halogen and oxygen atoms; and each Q 2 is independently hydrogen, halogen, primary or secondary lower alkyl, phenyl, halogen, hydrocarbonoxy or halohydrocarbonoxy as defined for Q 1 .
Claim 20
Dependent Claim
33 words
A composition according to claim 1 wherein the amount of copolymer prepared from salicylic acid and dicarboxylic acid present is about 1% to about 10% based on weight of the polyphenylene ether present.
Claim 21
Dependent Claim
21 words
A composition according to claim 13 wherein the molar ratio of salicylate to dicarboxylate ranges from about 1:3 to about 3:1.
Claim 22
Dependent Claim
17 words
A composition according to claim 13 wherein the molar ratio of salicylate to dicarboxylate is about 1:1.
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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) | 1995-06-16 | 1995-12-16 | 1996-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-16 | 1999-12-16 | 2000-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-16 | 2003-12-16 | 2004-06-16 | $7700.00 | Window Closed / Lapsed |