Patent US5342914A successfully refreshed from Google Patents.
US5342914A
Expired / Lapsed
US
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Curable composition
Assignee: Kanegafuchi Chemical Industry Co Ltd
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Filing: 1993-04-07
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Granted: 1994-08-30
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Expires: 2013-04-07
Abstract
Abstract A curable composition comprising an oxyalkylene polymer having a silicon-containing hydrolyzable group and a low-molecular silicon compound having a hydrolyzable group bonded to a silicon atom which is more reactive to H2O than the oxyalkylene polymer, with the mole number of the total hydrolyzable groups in said low-molecular silicon compound being not more than that of the hydrolyzable groups in said oxyalkylene polymer. A sealing compound having well-balanced storage stability and rapid curability is provided.
Inventors
- 👤 Hiroshi Iwakiri
- 👤 Masayuki Fujita
- 👤 Takashi Hasegawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:29
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/02; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/336; C08K; C08K5/00; C08K5/54; C08K5/541; C08K5/5415
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
86 words
A curable composition essentially comprising an oxyalkylene polymer having a silicon-containing hydrolyzable group represented by formula: (CH.sub.3 O).sub.2 Si(CH.sub.3)CH.sub.2 CH.sub.2 CH.sub.2 -, in which the composition contains a low-molecular silicon compound having a hydrolyzable group bonded to a silicon atom represented by the formula: CH.sub.2 =CHSi(OCH.sub.3).sub.3, which is more reactive to H 2 O than the oxyalkylene polymer is, with the mole number of the total hydrolyzable groups in said low-molecular silicon compound being not more than that of the hydrolyzable groups in said oxyalkylene polymer.
Claim 2
Dependent Claim
86 words
A curable composition essentially comprising an oxyalkylene polymer having a silicon-containing hydrolyzable group represented by formula: (CH.sub.3 O).sub.2 Si(CH.sub.3)CH.sub.2 CH.sub.2 CH.sub.2 -, in which the composition contains a low-molecular silicon compound having a hydrolyzable group bonded to a silicon atom represented by the formula: CH.sub.2 =CHSi(OCH.sub.3).sub.3, which is more reactive to H 2 O than the oxyalkylene polymer is, with the mole number of the total hydrolyzable groups in said low-molecular silicon compound being not more than that of the hydrolyzable groups in said oxyalkylene polymer.
Claim 3
Dependent Claim
40 words
A curable composition as claimed in claim 1, wherein said oxyalkylene polymer has a number average molecular weight of not less than 10,000 and a weight average molecular weight to number average molecular weight ratio of not more than 1.5.
Claim 4
Dependent Claim
21 words
A curable composition as claimed in claim 1, wherein said composition has a water content of not more than 500 ppm.
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) | 1997-08-29 | 1998-02-28 | 1998-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-29 | 2002-02-28 | 2002-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-29 | 2006-02-28 | 2006-08-30 | $7700.00 | Window Closed / Lapsed |