US4882396A
Expired / Lapsed
US
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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: 1989-11-21
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Expires: 2008-08-05
Abstract
Abstract A siloxane-amide block copolymer having an alkenyl group or a photopolymerizable organic group at both terminals thereof which is represented by formula (I): <IMAGE> (I) <IMAGE> wherein R1 represents a reaction residual group of an epoxy compound containing an alkenyl group or a photopolymerizable organic group and/or a substitution reaction product between said reaction residual group and an organosilyl group and the other symbols are as defined in the specification. The copolymer is produced by reacting a polycondensate of a diaminosiloxane and a dicarboxylic acid dihalide with a compound containing an alkenyl group or a photopolymerizable organic group at one terminal thereof and an epoxy group at the other terminal thereof. The siloxane-amide block copolymer exhibits excellent processability and reactive curability by application of heat, light or radiation.
Inventors
- 👤 Hisayuki Nagaoka
- 👤 Michio Zenbayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:17
CPC Classifications
C; C08; C08F; C08F290/00; C08F290/02; C08F290/06; C08F290/068; C08G; C08G69/00; C08G69/42; C08G77/00; C08G77/42; C08G77/452; C08G77/455
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
127 words
A siloxane-amide block copolymer having an alkenyl group or a photopolymerizable organic group at both terminals thereof which is represented by formula (I): ##STR28## wherein R 1 represents a reaction residual group of an epoxy compound containing a photopolymerizable organic group formed by a ring-opening addition reaction between the amino group at both terminals of the block copolymer and the epoxy group of the epoxy compound and/or a substitution reaction product between said reaction residual group of the block copolymer and a silylating agent; 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; and m and n each represents a number of 1 or more.
Claim 2
Dependent Claim
127 words
A siloxane-amide block copolymer having an alkenyl group or a photopolymerizable organic group at both terminals thereof which is represented by formula (I): ##STR28## wherein R 1 represents a reaction residual group of an epoxy compound containing a photopolymerizable organic group formed by a ring-opening addition reaction between the amino group at both terminals of the block copolymer and the epoxy group of the epoxy compound and/or a substitution reaction product between said reaction residual group of the block copolymer and a silylating agent; 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; and m and n each represents a number of 1 or more.
Claim 3
Dependent Claim
22 words
A siloxane-amide block copolymer having an alkenyl group at both terminals thereof as claimed in claim 1, wherein R 1 is ##STR29##
Claim 4
Dependent Claim
22 words
A siloxane-amide block copolymer having an alkenyl group at both terminals thereof as claimed in claim 1, wherein R 1 is ##STR30##
Claim 5
Dependent Claim
23 words
A siloxane-amide block copolymer having a photopolymerizable organic group at both terminals thereof as claimed in claim 1, wherein R 1 is ##STR31##
Claim 6
Dependent Claim
23 words
A siloxane-amide block copolymer having a photopolymerizable organic group at both terminals thereof as claimed in claim 1, wherein R 1 is ##STR32##
Claim 7
Dependent Claim
207 words
A process for producing a siloxane-amide block copolymer represented by formula (I): ##STR33## wherein R 1 represents a reaction residual group of an epoxy compound containing a photopolymerizable organic group formed by a ring-opening addition reaction between the amino group at both terminals of the block copolymer and the epoxy group of the epoxy compound and/or a substitution reaction product between said reaction residual group of the block copolymer and a silylating agent; R 2 represents a substituted or unsubstituted divalent hydrocarbon group; R 3 represents a substituted or unsubstituted divalent aromatic hydrocarbon group, R 4 represents a sunstituted or unsubstituted divalent aromatic hydrocarbon group; and m and n each represents a number of 1 or more, which comprises mixing a diaminosiloxane represented by formula (II): ##STR34## 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: ##STR35## wherein R 4 is as defined above; and Z represents a halogen atom, to form a polycordensate; and adding a compound containing a photopolymerizable organic group at one terminal thereof and an epoxy group at the other terminal thereof.
Claim 8
Dependent Claim
207 words
A process for producing a siloxane-amide block copolymer represented by formula (I): ##STR33## wherein R 1 represents a reaction residual group of an epoxy compound containing a photopolymerizable organic group formed by a ring-opening addition reaction between the amino group at both terminals of the block copolymer and the epoxy group of the epoxy compound and/or a substitution reaction product between said reaction residual group of the block copolymer and a silylating agent; R 2 represents a substituted or unsubstituted divalent hydrocarbon group; R 3 represents a substituted or unsubstituted divalent aromatic hydrocarbon group, R 4 represents a sunstituted or unsubstituted divalent aromatic hydrocarbon group; and m and n each represents a number of 1 or more, which comprises mixing a diaminosiloxane represented by formula (II): ##STR34## 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: ##STR35## wherein R 4 is as defined above; and Z represents a halogen atom, to form a polycordensate; and adding a compound containing a photopolymerizable organic group at one terminal thereof and an epoxy group at the other terminal thereof.
Claim 9
Dependent Claim
15 words
A process as claimed in claim 6, wherein said dicarboxylic acid dihalide is phthalic dichloride.
Claim 10
Dependent Claim
15 words
A process as claimed in claim 6, wherein said dicarboxylic acid dihalide is isophthalic dichloride.
Claim 11
Dependent Claim
18 words
A siloxane-amide block copolymer as claimed in claim 1, wherein said photopolymerizable group is a terminal alkenyl group.
References Cited (Backward Citations)
US4278786A
Cited
US4168360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-20 | 1993-05-22 | 1993-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-20 | 1997-05-22 | 1997-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-20 | 2001-05-22 | 2001-11-21 | $7700.00 | Window Closed / Lapsed |