US4588512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noncorrosive de-icing composition and method comprising calcium and magnesium carboxylate
Assignee: RIPPIE ELOISE LORCH
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Filing: 1985-08-13
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Granted: 1986-05-13
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Expires: 2005-08-13
Abstract
Abstract This invention relates to the use of calcium or magnesium carboxylate coated aggregates as snow and ice control compositions. Also disclosed is a method for preparing these compositions by mixing lime and wetting agent coated sand and treating the resulting product with a carboxylic acid.
Inventors
- 👤 Wallace Rippie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:25
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/18; C09K3/185; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
106 words
A snow and ice control material for a surface, said material comprising an aggregate coated with a combination of a cement grinding aid and a composition selected from the group consisting of magnesium carboxylate and calcium carboxylate and mixtures thereof, wherein the carboxylate comprises from about 16.5 to 76 percent by weight on a dry weight basis of said material, wherein the carboxylate groups contains from 1 to 4 carbon atoms and wherein the aggregate possesses sufficient density so that when it is coated with the carboxylate and applied to the surface it will not readily be blown off of the surface by ambient wind conditions.
Claim 2
Dependent Claim
106 words
A snow and ice control material for a surface, said material comprising an aggregate coated with a combination of a cement grinding aid and a composition selected from the group consisting of magnesium carboxylate and calcium carboxylate and mixtures thereof, wherein the carboxylate comprises from about 16.5 to 76 percent by weight on a dry weight basis of said material, wherein the carboxylate groups contains from 1 to 4 carbon atoms and wherein the aggregate possesses sufficient density so that when it is coated with the carboxylate and applied to the surface it will not readily be blown off of the surface by ambient wind conditions.
Claim 3
Dependent Claim
10 words
The material of claim 1 wherein the carboxylate is acetate.
Claim 4
Dependent Claim
22 words
The material of claim 1 wherein the aggregate is selected from the group consisting of sand, nutshells, expanded shale, fertilizer, and urea.
Claim 5
Dependent Claim
10 words
The material of claim 1 wherein the aggregate is sand.
Claim 6
Dependent Claim
28 words
The material of claim 1 wherein the cement grinding aid is selected from the group consisting of amine acetates, glycols, alcohols, glycol amines, fatty acids and formulated naphthalenes.
Claim 7
Dependent Claim
13 words
The material of claim 1 wherein the cement grinding aid is amine acetate.
Claim 8
Dependent Claim
82 words
A snow and ice control composition for application to a surface said composition comprising a reaction product of an hydroxide material selected from magnesium hydroxide, calcium hydroxide and mixtures thereof with a C 1 -C 4 carboxylic acid in the presence of a cement grinding aid and an aggregate wherein the aggregate possesses sufficient density so that when it is coated with the carboxylate and applied to the surface it will not readily be blown off the surface by ambient wind conditions.
Claim 9
Dependent Claim
82 words
A snow and ice control composition for application to a surface said composition comprising a reaction product of an hydroxide material selected from magnesium hydroxide, calcium hydroxide and mixtures thereof with a C 1 -C 4 carboxylic acid in the presence of a cement grinding aid and an aggregate wherein the aggregate possesses sufficient density so that when it is coated with the carboxylate and applied to the surface it will not readily be blown off the surface by ambient wind conditions.
Claim 10
Dependent Claim
29 words
The material of claim 7 wherein the ratio of the hydroxide material to the aggregate is in the range of 1 to 0.75 to 1 to 12 by weight.
Claim 11
Dependent Claim
99 words
A process for preparing a snow and ice control composition for application to a surface, said process comprising: (a) coating an aggregate with a cement grinding aid wherein the aggregate possesses sufficient density so that when it is coated with the carboxylate and applied to the surface it will not readily be blown off the surface by ambient wind conditions; (b) mixing the coated aggregate with a compound selected from calcium hydroxide, magnesium hydroxide and mixtures thereof; and (c) reacting at least a portion of the hydroxide groups with a carboxylic acid having from 1 to 4 carbon atoms.
Claim 12
Dependent Claim
99 words
A process for preparing a snow and ice control composition for application to a surface, said process comprising: (a) coating an aggregate with a cement grinding aid wherein the aggregate possesses sufficient density so that when it is coated with the carboxylate and applied to the surface it will not readily be blown off the surface by ambient wind conditions; (b) mixing the coated aggregate with a compound selected from calcium hydroxide, magnesium hydroxide and mixtures thereof; and (c) reacting at least a portion of the hydroxide groups with a carboxylic acid having from 1 to 4 carbon atoms.
Claim 13
Dependent Claim
29 words
The process of claim 9 wherein the ratio of the hydroxide material to the aggregate is in the range of 1 to 0.75 to 1 to 12 by weight.
Claim 14
Dependent Claim
28 words
The process of claim 9 wherein the cement grinding aid is selected from the group consisting of amine acetates, glycols, alcohols, glycol amines, fatty acids and formulated naphthalenes.
Claim 15
Dependent Claim
14 words
The process of claim 9 wherein the cement grinding aid is an amine acetate.
Claim 16
Dependent Claim
23 words
The process of claim 9 wherein the compound is a mixture of calcium and magnesium hydroxide and the carboxylic acid is acetic acid.
Claim 17
Dependent Claim
19 words
The process of claim 9 wherein the mixture is agitated for up to 12 hours following the reaction step.
Claim 18
Dependent Claim
18 words
The process of claim 9 wherein the aggregate is selected from sand, nutshells, expanded shale, fertilizer, and urea.
Claim 19
Dependent Claim
10 words
The process of claim 9 wherein the aggregate is sand.
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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) | 1989-05-12 | 1989-11-11 | 1990-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-12 | 1993-11-11 | 1994-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-12 | 1997-11-11 | 1998-05-13 | $7700.00 | Window Closed / Lapsed |