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US4786667A
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Polyether end-blocked with hydrolyzable silyl groups, method of manufacturing and room temperature curable composition using the polyether
Assignee: Momentive Performance Materials Japan LLC
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Filing: 1987-05-22
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Granted: 1988-11-22
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Expires: 2007-05-22
Abstract
Abstract Polyethers end-blocked with hydrolyzable silyl groups are manufactured by reacting an epoxy end-blocked linear polyoxyalkylene, a mono-epoxy substituted hydrolyzable silane and an aromatic diamine and compounded with filler to produce a room temperature curable elastomer.
Inventors
- 👤 Chiyuki Shimizu
- 👤 Tamio Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:55
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/56; C08G59/14; C08G59/1433; C08G59/1438; C08G59/145; C08G59/5033; C08G65/32
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
127 words
A room temperature curable composition comprising: (I) 100 parts by weight of a polyether having molecular weight from 500 to 50,000, end-blocked with hydrolyzable silyl groups and represented by the general formula: ##STR22## where R 1 , R 2 , R 3 and R 4 individually represent a divalent hydrocarbon group, R 5 represents a monovalent hydrocarbon group, R 6 represents an alkyl group with 1 to 6 carbon atoms, A represents a substituted or non-substituted divalent aromatic group, a represents a number of 1 to 3, m represents a number of 10 to 500 and n represents a number of 1 or greater, (II) 3 to 300 parts by weight of an inorganic filler, and (III) 0.001 to 20 parts by weight of a curing catalyst.
Claim 2
Dependent Claim
127 words
A room temperature curable composition comprising: (I) 100 parts by weight of a polyether having molecular weight from 500 to 50,000, end-blocked with hydrolyzable silyl groups and represented by the general formula: ##STR22## where R 1 , R 2 , R 3 and R 4 individually represent a divalent hydrocarbon group, R 5 represents a monovalent hydrocarbon group, R 6 represents an alkyl group with 1 to 6 carbon atoms, A represents a substituted or non-substituted divalent aromatic group, a represents a number of 1 to 3, m represents a number of 10 to 500 and n represents a number of 1 or greater, (II) 3 to 300 parts by weight of an inorganic filler, and (III) 0.001 to 20 parts by weight of a curing catalyst.
Claim 3
Dependent Claim
30 words
A composition as defined in claim 1, wherein the oxyalkylene unit R 1 O is an oxyethylene unit, oxypropylene unit or a combined system of oxyethylene unit and oxypropylene unit.
Claim 4
Dependent Claim
18 words
A composition as defined in claim 1, wherein the oxyalkylene unit R 1 O is an oxypropylene unit.
Claim 5
Dependent Claim
57 words
A composition as defined in claim 1, wherein A represents a substituted or non-substituted phenylene group, biphenylene group or a divalent aromatic group represented by the general formula: --R.sup.7 --Q--R.sup.8 -- where R 7 and R 8 individually represent a substituted or non-substituted phenylene group, Q represents an alkylene group, --O--, --S--, --SO 2 -- or --CO--.
Claim 6
Dependent Claim
11 words
A composition as defined in claim 1, wherein a is 2.
Claim 7
Dependent Claim
13 words
The composition as defined in claim 1, wherein n is greater than 1.
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) | 1991-11-22 | 1992-05-23 | 1992-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-22 | 1996-05-23 | 1996-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-22 | 2000-05-23 | 2000-11-22 | $7700.00 | Window Closed / Lapsed |