Patent US4216067A successfully refreshed from Google Patents.
US4448919A
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Anti-icing compositions
Assignee: Kansai Paint Co Ltd
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Filing: 1982-09-30
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Granted: 1984-05-15
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Expires: 2002-09-30
Abstract
Abstract A composition for use in preventing the formation of ice comprising: (A) organopolysiloxane resin represented by the structural unit <IMAGE> wherein R represents hydrogen atom or monovalent organic group attached to the silicon atom by a carbon-to-silicon bond, R' represents hydrogen atom, C1 to C20 alkyl group, aryl group, oxime residue, n and m are each 0 or an integer of up to 4, and n plus m is 0 or an integer of less than 4, and (B) alkali metal compound represented by the formula Ma(+)X(-) wherein M represents alkali metal selected from Li, Na and K, X represents inorganic or organic acid group or hydroxyl group and a is an integer of 1 to 4.
Inventors
- 👤 Heihachi Murase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:40
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/18; C09K3/185; C09D; C09D183/00; C09D183/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
126 words
A composition for use in preventing the formation of ice comprising: (A) 70 to 99.8% by weight of organopolysiloxane resin comprising recurring structural units of the formula ##STR9## wherein R represents hydrogen atom or monovalent organic group attached to the silicon atom by a carbon-to-silicon bond, R' represents hydrogen atom, C 1 to C 20 alkyl group, aryl group, oxime residue, n and m are each 0, 1, 2, or 3 and n plus m is an integer of 1-3, and (B) 0.2 to 30% by weight 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 or hydroxyl group and a is an integer of 1 to 4.
Claim 2
Dependent Claim
126 words
A composition for use in preventing the formation of ice comprising: (A) 70 to 99.8% by weight of organopolysiloxane resin comprising recurring structural units of the formula ##STR9## wherein R represents hydrogen atom or monovalent organic group attached to the silicon atom by a carbon-to-silicon bond, R' represents hydrogen atom, C 1 to C 20 alkyl group, aryl group, oxime residue, n and m are each 0, 1, 2, or 3 and n plus m is an integer of 1-3, and (B) 0.2 to 30% by weight 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 or hydroxyl group and a is an integer of 1 to 4.
Claim 3
Dependent Claim
32 words
The composition according to claim 1 in which the alkali metal compound is at least one member selected from alkali metal salts of chloric acid, carbonic acid silicic acid and acetic acid.
Claim 4
Dependent Claim
20 words
The composition according to claim 1 in which the alkali metal compound is lithium salt of inorganic or organic acid.
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) | 1987-05-15 | 1987-11-14 | 1988-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-15 | 1991-11-14 | 1992-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-15 | 1995-11-14 | 1996-05-15 | $7700.00 | Window Closed / Lapsed |