Patent US4758637A successfully refreshed from Google Patents.
US4758637A
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US
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Silicone-modified polyester resin and silicone-sheathed polyester fibers made therefrom
Assignee: General Electric Co
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Filing: 1986-11-21
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Granted: 1988-07-19
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Expires: 2006-11-21
Abstract
Abstract Polyester resin is modified with siloxane block polymers in such a manner so as to form silicone-modified polyester copolymer domains of controlled size and distribution dispersed in the polyester matrix. These domains undergo microphase segregation and migration during the melt spinning and cold-drawing to the surface of the polyester fiber being formed so as to provide a silicone-sheathed polyester fiber.
Inventors
- 👤 James H. Merrifield
- 👤 George H. Greene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:20
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08G; C08G63/00; C08G63/68; C08G63/695; C08G77/00; C08G77/42; C08G77/44; C08G77/445; C08L83/00; C08L83/10; D; D01; D01F; D01F6/00; D01F6/88; D01F6/92; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2962
Claims Analysis
Total Claims: 50
Claim 1
Independent Claim
227 words
A process for preparing a silicone-modified polyester resin comprising reacting an aromatic dicarboxylic acid or its diester, a diol and a siloxane block polymer of the general formula: ##STR107## wherein R is individually a monovalent group selected from the group consisting of aminoalkyl, aminoaryl, (carboalkoxy)alkyl, (carboaryloxy)alkyl, (carboalkoxy)aryl, and (carboaryloxy)aryl; R' is individually a monovalent group selected from the group consisting of alkyl, aryl, alkenyl, and aralkyl groups containing from 1 to 8 carbon atoms; Z is selected from the group consisting of alkyl, aryl, aralkyl, alkoxy, polyoxyalkyl, alkenyl and siloxy with the proviso that when Z is siloxy x must equal zero; a has a value of 0 to 10; b has a value of 0 to 50,000; c has a value of 0 to 1,000 and the sum of a+b+c is such that the polysiloxane block polymer contains at least 10 silicon atoms; and x has a value of 0, 1, 2 or 3; wherein said reaction takes place in two stages, the first stage being either a transesterification between the diester of the dicarboxylic acid and the coreactants or an esterification between the dicarboxylic acid and the coreactants, the second stage being a polycondensation reaction wherein said siloxane block copolymer constitutes from 0.1 to 10 weight percent, based on the total reaction product and forms uniform domains approximately 0.05 to 6 micron in average size.
Claim 2
Dependent Claim
227 words
A process for preparing a silicone-modified polyester resin comprising reacting an aromatic dicarboxylic acid or its diester, a diol and a siloxane block polymer of the general formula: ##STR107## wherein R is individually a monovalent group selected from the group consisting of aminoalkyl, aminoaryl, (carboalkoxy)alkyl, (carboaryloxy)alkyl, (carboalkoxy)aryl, and (carboaryloxy)aryl; R' is individually a monovalent group selected from the group consisting of alkyl, aryl, alkenyl, and aralkyl groups containing from 1 to 8 carbon atoms; Z is selected from the group consisting of alkyl, aryl, aralkyl, alkoxy, polyoxyalkyl, alkenyl and siloxy with the proviso that when Z is siloxy x must equal zero; a has a value of 0 to 10; b has a value of 0 to 50,000; c has a value of 0 to 1,000 and the sum of a+b+c is such that the polysiloxane block polymer contains at least 10 silicon atoms; and x has a value of 0, 1, 2 or 3; wherein said reaction takes place in two stages, the first stage being either a transesterification between the diester of the dicarboxylic acid and the coreactants or an esterification between the dicarboxylic acid and the coreactants, the second stage being a polycondensation reaction wherein said siloxane block copolymer constitutes from 0.1 to 10 weight percent, based on the total reaction product and forms uniform domains approximately 0.05 to 6 micron in average size.
Claim 3
Dependent Claim
25 words
The process of claim 1 wherein the aromatic dicarboxylic acid is selected from the group of aromatic dicarboxylic acids having 8 to 15 carbon atoms.
Claim 4
Dependent Claim
36 words
The process of claim 1 wherein the diester of an aromatic dicarboxylic acid is selected from the group of C 1 to C 4 dialkyl esters of aromatic dicarboxylic acids having 8 to 15 carbon atoms.
Claim 5
Dependent Claim
12 words
The process of claim 2 wherein the aromatic dicarboxylic acid is symmetrical.
Claim 6
Dependent Claim
13 words
The process of claim 4 wherein the aromatic dicarboxylic acid is terephthalic acid.
Claim 7
Dependent Claim
15 words
The process of claim 3 wherein the ester of the aromatic dicarboxylic acid is dimethylterephthalate.
Claim 8
Dependent Claim
15 words
The process of claim 1 wherein the diol has from 2 to 20 carbon atoms.
Claim 9
Dependent Claim
24 words
The process of claim 7 wherein the diol is selected from the group consisting of aliphatic diols, branched chain diols, bis(hydroxyphenyl)alkanes, di(hydroxyphenyl)sulfones and di(hydroxyphenyl)ethers.
Claim 10
Dependent Claim
12 words
The process of claim 8 wherein the diol is an aliphatic diol.
Claim 11
Dependent Claim
11 words
The process of claim 9 wherein the diol is ethylene glycol.
Claim 12
Dependent Claim
27 words
The process of claim 1 wherein the siloxane block polymer is such that R is an aminoalkyl or aminoaryl group containing from 1 to 12 carbon atoms.
Claim 13
Dependent Claim
9 words
The process of claim 11 wherein R is aminopropyl.
Claim 14
Dependent Claim
27 words
The process of claim 1 wherein the siloxane block polymer is such that R is (carboalkoxy)alkyl, (carboxyloxyl)alkyl, (carboalkoxy)aryl or (carboaryloxy)aryl containing from 1 to 16 carbon atoms.
Claim 15
Dependent Claim
25 words
The process of claim 1 wherein the siloxane block polymer is such that R' is an oleophillic group containing from 1 to 8 carbon atoms.
Claim 16
Dependent Claim
11 words
The process of claim 14 wherein R' is an alkyl group.
Claim 17
Dependent Claim
9 words
The process of claim 15 wherein R' is methyl.
Claim 18
Dependent Claim
25 words
The process of claim 1 wherein the siloxane block polymer is such that Z is an oleophillic group containing from 1 to 25 carbon atoms.
Claim 19
Dependent Claim
18 words
The process of claim 17 wherein Z is an oleophillic group containing from 1 to 15 carbon atoms.
Claim 20
Dependent Claim
26 words
The process of claim 18 wherein Z is substituted with a group selected from the group consisting of halogen, cyano, amino, carboxy, sulfonate, alkylmercapto and hydroxy.
Claim 21
Dependent Claim
21 words
The process of claim 1 wherein the siloxane block polymer is such that a has a value of 0 to 5.
Claim 22
Dependent Claim
22 words
The process of claim 1 wherein the siloxane block polymer is such that b has a value of from 10 to 10,000.
Claim 23
Dependent Claim
15 words
The process of claim 21 wherein b has a value of from 50 to 200.
Claim 24
Dependent Claim
22 words
The process of claim 1 wherein the siloxane block polymer is such that c has a value of from 0 to 100.
Claim 25
Dependent Claim
9 words
The process of claim 23 wherein c is zero.
Claim 26
Dependent Claim
213 words
A silicone-modified polyester resin comprising: (a) a polyester matrix comprising the reaction product of an aromatic dicarboxylic acid or its diester and a diol; (b) a silicone-modified polyester matrix comprising the reaction product of an aromatic dicarboxylic acid or its diester, a diol and a siloxane-block polymer of the general formula: ##STR108## wherein R is individually a monovalent group selected from the group consisting of aminoalkyl, aminoaryl, (carboalkoxy)alkyl, (carboaryloxy)alkyl, (carboalkoxy)aryl, and (carboaryloxy)aryl; R' is individually a monovalent group selected from the group consisting of alkyl, aryl, alkenyl and aralkyl groups containing from 1 to 8 carbon atoms; Z is selected from the group consisting of alkyl, aryl, aralkyl, alkoxy, polyoxyalkyl, alkenyl and siloxy with the proviso that when Z is siloxy x must equal zero; a has a value of 0 to 10; b has a value of 0 to 50,000; c has a value of 0 to 1,000 and the sum of a+b+c is such that the polysiloxane block polymer contains at least 10 silicon atoms; and x has a value of 0, 1, 2 or 3; and (c) optionally a polysiloxane block polymer wherein said silicone-modified polyester matrix is dispersed throughout the polyester matrix as microdomains of between 0.05 to 6 micron size and contain, when present, encapsulated polysiloxane block polymer.
Claim 27
Dependent Claim
213 words
A silicone-modified polyester resin comprising: (a) a polyester matrix comprising the reaction product of an aromatic dicarboxylic acid or its diester and a diol; (b) a silicone-modified polyester matrix comprising the reaction product of an aromatic dicarboxylic acid or its diester, a diol and a siloxane-block polymer of the general formula: ##STR108## wherein R is individually a monovalent group selected from the group consisting of aminoalkyl, aminoaryl, (carboalkoxy)alkyl, (carboaryloxy)alkyl, (carboalkoxy)aryl, and (carboaryloxy)aryl; R' is individually a monovalent group selected from the group consisting of alkyl, aryl, alkenyl and aralkyl groups containing from 1 to 8 carbon atoms; Z is selected from the group consisting of alkyl, aryl, aralkyl, alkoxy, polyoxyalkyl, alkenyl and siloxy with the proviso that when Z is siloxy x must equal zero; a has a value of 0 to 10; b has a value of 0 to 50,000; c has a value of 0 to 1,000 and the sum of a+b+c is such that the polysiloxane block polymer contains at least 10 silicon atoms; and x has a value of 0, 1, 2 or 3; and (c) optionally a polysiloxane block polymer wherein said silicone-modified polyester matrix is dispersed throughout the polyester matrix as microdomains of between 0.05 to 6 micron size and contain, when present, encapsulated polysiloxane block polymer.
Claim 28
Dependent Claim
25 words
The resin of claim 25 wherein the aromatic dicarboxylic acid is selected from the group of aromatic dicarboxylic acids having 8 to 15 carbon atoms.
Claim 29
Dependent Claim
36 words
The resin of claim 25 wherein the diester of an aromatic dicarboxlyic acid is selected from the group of C 1 to C 4 dialkyl esters of aromatic dicarboxylic acids having 8 to 15 carbon atoms.
Claim 30
Dependent Claim
12 words
The resin of claim 26 wherein the aromatic dicarboxylic acid is symmetrical.
Claim 31
Dependent Claim
13 words
The resin of claim 28 wherein the aromatic dicarboxylic acid is terephthalic acid.
Claim 32
Dependent Claim
15 words
The resin of claim 27 wherein the ester of the aromatic dicarboxylic acid is dimethylterephthalate.
Claim 33
Dependent Claim
15 words
The resin of claim 25 wherein the diol has from 2 to 20 carbon atoms.
Claim 34
Dependent Claim
24 words
The resin of claim 31 wherein the diol is selected from the group consisting of aliphatic diols, branched chain diols, bis(hydroxyphenyl)alkanes, di(hydroxyphenyl)sulfones and di(hydroxyphenyl)ethers.
Claim 35
Dependent Claim
12 words
The resin of claim 32 wherein the diol is an aliphatic diol.
Claim 36
Dependent Claim
11 words
The resin of claim 33 wherein the diol is ethylene glycol.
Claim 37
Dependent Claim
27 words
The resin of claim 25 wherein the siloxane block polymer is such that R is an aminoalkyl or aminoaryl group containing from 1 to 12 carbon atoms.
Claim 38
Dependent Claim
9 words
The resin of claim 35 wherein R is aminopropyl.
Claim 39
Dependent Claim
27 words
The resin of claim 25 wherein the siloxane block polymer is such that R is (carboalkoxy)alkyl, (carboaryloxy)alkyl, (carboalkoxy)aryl or (carboaryloxy)aryl containing from 1 to 16 carbon atoms.
Claim 40
Dependent Claim
25 words
The resin of claim 35 wherein the siloxane block polymer is such that R' is an oleophillic group containing from 1 to 8 carbon atoms.
Claim 41
Dependent Claim
11 words
The resin of claim 38 wherein R' is an alkyl group.
Claim 42
Dependent Claim
9 words
The resin of claim 39 wherein R' is methyl.
Claim 43
Dependent Claim
25 words
The resin of claim 25 wherein the siloxane block polymer is such that Z is an oleophillic group containing from 1 to 25 carbon atoms.
Claim 44
Dependent Claim
18 words
The resin of claim 41 wherein Z is an oleophillic group containing from 1 to 25 carbon atoms.
Claim 45
Dependent Claim
26 words
The resin of claim 42 wherein Z is substituted with a group selected from the group consisting of halogen, cyano, amino, carboxy, sulfonate, alkylmercapto and hydroxy.
Claim 46
Dependent Claim
21 words
The resin of claim 25 wherein the siloxane block polymer is such that a has a value of 0 to 5.
Claim 47
Dependent Claim
22 words
The resin of claim 25 wherein the siloxane block polymer is such that b has a value of from 10 to 10,000.
Claim 48
Dependent Claim
15 words
The resin of claim 45 wherein b has a value of from 50 to 200.
Claim 49
Dependent Claim
22 words
The resin of claim 25 wherein the siloxane block polymer is such that c has a value of from 0 to 100.
Claim 50
Dependent Claim
9 words
The resin of claim 47 wherein c is zero.
References Cited (Backward Citations)
US3296190A
Cited
US3691257A
Cited
US3579607A
Cited
US3749757A
Cited
US3701815A
Cited
US4105567A
Cited
US4153640A
Cited
US4348510A
Cited
US4452962A
Cited
US4496704A
Cited
US4640962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-19 | 1992-01-18 | 1992-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-19 | 1996-01-18 | 1996-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-19 | 2000-01-18 | 2000-07-19 | $7700.00 | Window Closed / Lapsed |