US4413102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for protecting cementware from frost-damage comprising urethane resin and organopolysiloxane
Assignee: Takeda Pharmaceutical Co Ltd
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Filing: 1982-01-28
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Granted: 1983-11-01
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Expires: 2002-01-28
Abstract
Abstract A method of protecting cementware from frost-damage, which comprises coating the cementware with a moisture-cure type urethane resin coating impregnated with a web-like or three-dimensionally structured organopolysiloxane compound represented by the rational formula: R.sub.2 Si.sub.2 O.sub.3 wherein R is alkyl, hydroxyalkyl, aryl or aralkyl, of about 0.5 to 50 parts by weight relative to 100 parts by weight of resin portion in the urethane resin coating, and a composition therefor. The cementware applied with the composition has an excellent water repellency and an improved protective effect from frost-damage.
Inventors
- 👤 Michio Tanaka
- 👤 Kohji Nasu
- 👤 Tetsuaki Kanemoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:24
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/46; C04B41/49; C04B41/4905; C04B41/495; C04B41/4961; C04B41/60; C04B41/61; C04B41/62; C04B41/64; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C09; C09D; C09D175/00; C09D175/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31598
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
66 words
A composition for protecting cementware from frost-damage, which comprises a moisture-cure type urethane resin coating and a web-like or three-dimensionally structured organopolysiloxane compound represented by the rational formula R.sub.2 Si.sub.2 O.sub.3 wherein R is alkyl of not less than 4 carbon atoms or hydroxyalkyl of about 0.5 to 50 parts by weight relative to 100 parts by weight of resin portion in the urethane resin coating.
Claim 2
Dependent Claim
66 words
A composition for protecting cementware from frost-damage, which comprises a moisture-cure type urethane resin coating and a web-like or three-dimensionally structured organopolysiloxane compound represented by the rational formula R.sub.2 Si.sub.2 O.sub.3 wherein R is alkyl of not less than 4 carbon atoms or hydroxyalkyl of about 0.5 to 50 parts by weight relative to 100 parts by weight of resin portion in the urethane resin coating.
Claim 3
Dependent Claim
35 words
A composition as claimed in claim 1, wherein the organopolysiloxane compound is one represented by the rational formula, R 2 Si 2 O 3 wherein R is alkyl of not less than 4 carbon atoms.
Claim 4
Dependent Claim
28 words
A composition as claimed in claim 1, wherein the organopolysiloxane compound is one represented by the rational formula, R 2 Si 2 O 3 wherein F is hydroxyalkyl.
Claim 5
Dependent Claim
42 words
A composition as claimed in claim 1, wherein the ratio of the organopolysiloxane compound relative to the urethane resin coating is about 1 to 5 parts by weight relative to 100 parts by weight of resin portion in the urethane resin coating.
Claim 6
Dependent Claim
12 words
A composition as claimed in claim 2, wherein the alkyl is 2-ethylhexyl.
Claim 7
Dependent Claim
12 words
A composition as claimed in claim 2, wherein the alkyl is stearyl.
Claim 8
Dependent Claim
12 words
A composition as claimed in claim 3, wherein the hydroxalkyl is hydroxyethyl.
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) | 1986-10-31 | 1987-05-02 | 1987-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-31 | 1991-05-02 | 1991-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-31 | 1995-05-02 | 1995-11-01 | $7700.00 | Window Closed / Lapsed |