Patent US4636324A successfully refreshed from Google Patents.
US4636324A
Expired / Lapsed
US
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Anti-icing compositions
Assignee: Kansai Paint Co Ltd
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Filing: 1985-03-18
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Granted: 1987-01-13
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Expires: 2005-03-18
Abstract
Abstract The present invention provides: a composition for use in preventing the formation of ice comprising (A) organopolysiloxane, (B) alkali metal compound and (C) liquid or solid paraffin; a method for preventing the formation of ice by applying the composition to the surface of an object; and another method for preventing the formation of ice by applying a primer containing a silane coupling agent to the surface of an object and applying the composition to the primer coat formed.
Inventors
- 👤 Heihachi Murase
- 👤 Kiyoshi Nanishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:20
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/04; C08; C08K; C08K3/00; C08K3/10; C08K5/00; C08K5/01; C08K5/04; C08K5/09
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
139 words
A composition for use in preventing the formation of ice comprising: (A) 40 to 99.6% by weight of organopolysiloxane resin comprising recurring structural units of the formula ##STR8## wherein R represents hydrogen atom or monovalent organic group attached to the silicon atom by a carbon-silicon bond, R' represents hydrogen atom, C 1 -C 20 alkyl group, acyl group, aryl group, oxime residue, n and m are each 0, 1, 2 or 3 and n plus m is an integer of 1 to 3, (B) 0.2 to 30% by weight of alkali metal compound represented by the formula Ma.sup.⊕ X.sup.⊖ wherein M represents alkali metal selected from Li, Na and K, X represents inorganic or organic acid group and a is an integer of 1 to 4, and (C) 0.2 to 30% by weight of liquid paraffin and/or solid paraffin.
Claim 2
Dependent Claim
139 words
A composition for use in preventing the formation of ice comprising: (A) 40 to 99.6% by weight of organopolysiloxane resin comprising recurring structural units of the formula ##STR8## wherein R represents hydrogen atom or monovalent organic group attached to the silicon atom by a carbon-silicon bond, R' represents hydrogen atom, C 1 -C 20 alkyl group, acyl group, aryl group, oxime residue, n and m are each 0, 1, 2 or 3 and n plus m is an integer of 1 to 3, (B) 0.2 to 30% by weight of alkali metal compound represented by the formula Ma.sup.⊕ X.sup.⊖ wherein M represents alkali metal selected from Li, Na and K, X represents inorganic or organic acid group and a is an integer of 1 to 4, and (C) 0.2 to 30% by weight of liquid paraffin and/or solid paraffin.
Claim 3
Dependent Claim
22 words
The composition according to claim 1 wherein R in the recurring structural units is alkyl group having 1 to 6 carbon atoms.
Claim 4
Dependent Claim
28 words
The composition according to claim 1 wherein the alkali metal compound is at least one of compounds selected from the group consisting of chlorides, carbonates, silicates and acetates.
Claim 5
Dependent Claim
14 words
The composition according to claim 1 wherein the alkali metal compound is lithium compound.
Claim 6
Dependent Claim
19 words
The composition according to claim 1 wherein the liquid paraffin has a pour point of -5° C. or lower.
Claim 7
Dependent Claim
39 words
The composition according to claim 1 which comprises 75 to 99.0% by weight of the organopolysiloxane, 0.5 to 10% by weight of the alkali metal compound and 0.5 to 15% by weight of the liquid paraffin and/or solid paraffin.
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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) | 1990-01-12 | 1990-07-14 | 1991-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-12 | 1994-07-14 | 1995-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-12 | 1998-07-14 | 1999-01-13 | $7700.00 | Window Closed / Lapsed |