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Patent US4877855A successfully refreshed from Google Patents.
US4877855A
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Siloxane-amide block copolymer and process for producing the same
Assignee: Momentive Performance Materials Japan LLC
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Filing: 1988-08-05
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Granted: 1989-10-31
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Expires: 2008-08-05
Abstract
Abstract A siloxane-amide block copolymer represented by formula (I): ##STR1## wherein the symbols are as defined in the specification, is disclosed. The polymer of formula (I) is produced by reacting a polycondensate of a diaminosiloxane and a dicarboxylic acid dihalide with an epoxysilane to induce ring-opening addition reaction between the terminal amino groups of the polymer and the epoxy group of the epoxysilane. The siloxane-amide block copolymer exhibits excellent processability and reactive curability due to the hydrolyzable silyl groups at the both terminals.
Inventors
- 👤 Hisayuki Nagaoka
- 👤 Michio Zenbayashi
- 👤 Chiyuki Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:23
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/48; C08G77/54; C08G77/42; C08G77/452; C08G77/455
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
202 words
A siloxane-amide block copolymer represented by formula (I): ##STR19## wherein Y represents an organosilyl group containing a hydrolyzable group represented by formula --SiR 5 a X 3-a ; R 1 represents a divalent group selected form the group consisting of ##STR20## R 2 represents a substituted or unsubstituted divalent hydrocarbon group; R 3 represents a substituted or unsubstituted monovalent hydrocarbon group; R 4 represents a substituted or unsubstituted divalent aromatic hydrocarbon group; R 5 represents a substituted or unsubstituted monovalent hydrocarbon group; R 6 represents a hydrogen atom, the same substituted or unsubstituted monovalent hydrocarbon group as represented by R 3 or an organosilyl group represented by formula --SiR 8 b X 3-b ; R 7 represents a substituted or unsubstituted divalent hydrocarbon group containing up to 8 carbon atoms which may contain therein an ether linkage containing an oxygen or sulfur atom; R 8 represents the same monovalent group as represented by R 3 ; X represents a hydrolyzable group or hydroxyl group bonded to the silicon atom; a represents 0 or an integer of 1 or 2; b represents 0 or an integer of from 1 to 3; and m and n each represents a number of 1 or more.
Claim 2
Dependent Claim
202 words
A siloxane-amide block copolymer represented by formula (I): ##STR19## wherein Y represents an organosilyl group containing a hydrolyzable group represented by formula --SiR 5 a X 3-a ; R 1 represents a divalent group selected form the group consisting of ##STR20## R 2 represents a substituted or unsubstituted divalent hydrocarbon group; R 3 represents a substituted or unsubstituted monovalent hydrocarbon group; R 4 represents a substituted or unsubstituted divalent aromatic hydrocarbon group; R 5 represents a substituted or unsubstituted monovalent hydrocarbon group; R 6 represents a hydrogen atom, the same substituted or unsubstituted monovalent hydrocarbon group as represented by R 3 or an organosilyl group represented by formula --SiR 8 b X 3-b ; R 7 represents a substituted or unsubstituted divalent hydrocarbon group containing up to 8 carbon atoms which may contain therein an ether linkage containing an oxygen or sulfur atom; R 8 represents the same monovalent group as represented by R 3 ; X represents a hydrolyzable group or hydroxyl group bonded to the silicon atom; a represents 0 or an integer of 1 or 2; b represents 0 or an integer of from 1 to 3; and m and n each represents a number of 1 or more.
Claim 3
Dependent Claim
11 words
A siloxane-amide block copolymer as claimed in claim 1, wherein ##STR21##
Claim 4
Dependent Claim
15 words
A siloxane-amide block copolymer as claimed in claim 1, wherein Y--R 1 -- is ##STR22##
Claim 5
Dependent Claim
333 words
A process for producing a siloxane-amide block copolymer represented by formula (I): ##STR23## wherein Y represents an organosilyl group containing a hydrolyzable group represented by formula --SiR 5 a X 3-a ; R 1 represents a divalent group selected from the group consisting of ##STR24## R 2 represents a substituted or unsubstituted divalent hydrocarbon group; R 3 represents a substituted or unsubstituted monovalent hydrocarbon group; R 4 represents a substituted or unsubstituted divalent aromatic hydrocarbon group; R 5 represents a substituted or unsubstituted monovalent hydrocarbon group; R 6 represents a hydrogen atom, the same substituted or unsubstituted monovalent hydrocarbon group as represented by R 3 or an organosilyl group represented by formula --SiR 8 b X 3-b ; R 7 represents a substituted or unsubstituted divalent hydrocarbon group containing up to 8 carbon atoms which may contain therein an ether linkage containing an oxygen or sulfur atom; R 8 represents the same monovalent group as represented by R 3 ; X represents a hydrolyzable group or hydroxyl group bonded to the silicon atom; a represents 0 or an integer of 1 or 2; b represents 0 or an integer of from 1 to 3; and m and n each represents a number of 1 or more, which comprises mixing a diaminosiloxane represented by formula (II): ##STR25## wherein R 2 , R 3 and m are as defined above, and a dicarboxylic acid dihalide represented by formula (III) in an amount of from 1.005 to 2.0 mols of the diaminosiloxane per mol of the dicarboxylic acid dihalide: ##STR26## wherein R 4 is as defined above; and Z represents a halogen atom, to form a polycondensate; and adding an epoxy silane represented by formula (IV) to said polycondensate: R.sup.9 --SiiR.sup.5.sub.a X.sub.3-a (IV) wherein R 5 , X, and a are as defined above; and R 9 represents an epoxy group-containing organic group represented by formula ##STR27## wherein R 7 is as defined above, to effect ring-opening addition to the both terminal groups of the polymer.
Claim 6
Dependent Claim
333 words
A process for producing a siloxane-amide block copolymer represented by formula (I): ##STR23## wherein Y represents an organosilyl group containing a hydrolyzable group represented by formula --SiR 5 a X 3-a ; R 1 represents a divalent group selected from the group consisting of ##STR24## R 2 represents a substituted or unsubstituted divalent hydrocarbon group; R 3 represents a substituted or unsubstituted monovalent hydrocarbon group; R 4 represents a substituted or unsubstituted divalent aromatic hydrocarbon group; R 5 represents a substituted or unsubstituted monovalent hydrocarbon group; R 6 represents a hydrogen atom, the same substituted or unsubstituted monovalent hydrocarbon group as represented by R 3 or an organosilyl group represented by formula --SiR 8 b X 3-b ; R 7 represents a substituted or unsubstituted divalent hydrocarbon group containing up to 8 carbon atoms which may contain therein an ether linkage containing an oxygen or sulfur atom; R 8 represents the same monovalent group as represented by R 3 ; X represents a hydrolyzable group or hydroxyl group bonded to the silicon atom; a represents 0 or an integer of 1 or 2; b represents 0 or an integer of from 1 to 3; and m and n each represents a number of 1 or more, which comprises mixing a diaminosiloxane represented by formula (II): ##STR25## wherein R 2 , R 3 and m are as defined above, and a dicarboxylic acid dihalide represented by formula (III) in an amount of from 1.005 to 2.0 mols of the diaminosiloxane per mol of the dicarboxylic acid dihalide: ##STR26## wherein R 4 is as defined above; and Z represents a halogen atom, to form a polycondensate; and adding an epoxy silane represented by formula (IV) to said polycondensate: R.sup.9 --SiiR.sup.5.sub.a X.sub.3-a (IV) wherein R 5 , X, and a are as defined above; and R 9 represents an epoxy group-containing organic group represented by formula ##STR27## wherein R 7 is as defined above, to effect ring-opening addition to the both terminal groups of the polymer.
Claim 7
Dependent Claim
15 words
A process as claimed in claim 4, wherein said dicarboxylic acid dihalide is phthalic dichloride.
Claim 8
Dependent Claim
15 words
A process as claimed in claim 4, wherein said dicarboxylic acid dihalide is isophthalic dichloride.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-30 | 1993-05-01 | 1993-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-30 | 1997-05-01 | 1997-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-30 | 2001-05-01 | 2001-10-31 | $7700.00 | Window Closed / Lapsed |