Patent US5296582A successfully refreshed from Google Patents.
US5296582A
Expired / Lapsed
US
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Curable resin composition
Assignee: Kanegafuchi Chemical Industry Co Ltd
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Filing: 1991-11-18
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Granted: 1994-03-22
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Expires: 2011-11-18
Abstract
Abstract A curable resin composition has a low viscosity, hence is easy to handle, before curing and, after curing, gives cured products having good tensile characteristics and, in addition, good chemical resistance and water resistance. This composition includes (A) an oxypropylene polymer having at least one silicon atom-containing group having a hydroxyl group or hydrolyzable group bound to the silicon atom and having an Mw/Mn ratio of up to than 1.6 and a number average molecular weight of at least 6,000, and (B) an epoxy resin.
Inventors
- 👤 Masayuki Fujita
- 👤 Michihide Homma
- 👤 Hiroshi Wakabayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:22
CPC Classifications
C; C08; C08L; C08L63/00; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/336; C08L71/00; C08L71/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
82 words
A curable resin composition which comprises: (A) an oxypropylene polymer which contains, in its main polymer chain, a repeating unit of the formula ##STR8## and which has at least one silicon atom-containing group having a hydroxyl group or a hydrolyzable group bound to the silicon atom and has an Mw/Mn ratio of up to 1.6 and a number average molecular weight of at least 6,000, and (B) an epoxy resin, a ratio of (A) to (B) being 100/1 to 1/100 by weight.
Claim 2
Dependent Claim
82 words
A curable resin composition which comprises: (A) an oxypropylene polymer which contains, in its main polymer chain, a repeating unit of the formula ##STR8## and which has at least one silicon atom-containing group having a hydroxyl group or a hydrolyzable group bound to the silicon atom and has an Mw/Mn ratio of up to 1.6 and a number average molecular weight of at least 6,000, and (B) an epoxy resin, a ratio of (A) to (B) being 100/1 to 1/100 by weight.
Claim 3
Dependent Claim
22 words
A curable resin composition as claimed in claim 1, wherein the component (A) polymer has an Mw/Mn ratio of up to 1.5.
Claim 4
Dependent Claim
24 words
A curable resin composition as claimed in claim 1 wherein the component (A) polymer has a number average molecular weight of 6,000 to 30,000.
Claim 5
Dependent Claim
22 words
A curable resin composition as claimed in claim 1, wherein the silicon atom-containing group occurs at the terminal of the molecular chain.
References Cited (Backward Citations)
JPS4627250B1
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JPS5915336A
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JPS61268720A
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JPS61197631A
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JPS61215623A
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US5011900A
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US5063270A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-03-21 | 1997-09-20 | 1998-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-21 | 2001-09-20 | 2002-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-21 | 2005-09-20 | 2006-03-22 | $7700.00 | Window Closed / Lapsed |