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US4056653A
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Spherical-shaped particles from ionomer resins and ethylene/carboxylic acid copolymer resins
Assignee: EIDP Inc
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Filing: 1975-09-24
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Granted: 1977-11-01
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Expires: 1995-09-24
Abstract
Abstract Spherical-shaped particles having an average diameter of 10 to 100 microns and the surface thereof is covered with hemispherical-shaped bumps about 0.1 micron in diameter, the particles being a copolymer of alpha-olefins and alpha, beta-ethylenically unsaturated carboxylic acid having 3 to 8 carbon atoms, the copolymer having up to 90% of the carboxylic acid groups ionized by neutralization with metal ions. The particles form a free-flowing powder useful in preparing clear, protective, shatter-resistant coatings for glass, and protective coatings for metals and other material.
Inventors
- 👤 John Charles Gebhard, Jr.
- 👤 Marion Glen Waggoner
- 👤 James Lang Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:24
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08J2357/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/31504; Y10T428/31855; Y10T428/31938
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
177 words
Spherical-shaped particles having an average diameter of 10 to 100 microns, of a copolymer of (a) alpha-olefins of the formula R--CH═CH 2 , where R is a radical selected from the class consisting of hydrogen and alkyl radicals having from 1 to 8 carbon atoms, and (b) an alpha, beta-ethylenically unsaturated carboxylic acids having from 3 to 8 carbon atoms, said copolymer having from 0 to 90% of the carboxylic acid groups ionized by neutralization with metal ions, said metal ions having an ionized valence of from 1 to 3 inclusive when the unsaturated acid is a monocarboxylic acid and an ionized valence of one when the unsaturated acid is a dicarboxylic acid and said metal ions being selected from the group consisting of uncomplexed and complexed metal ions, said copolymer being a direct copolymer of the alpha-olefins and the unsaturated carboxylic acid in which the carboxylic acid groups are randomly distributed over all molecules and in which 1 the alpha-olefin content of the copolymer is at least 50 mol percent, based on the alpha-olefinacid copolymer, 2.
Claim 2
Dependent Claim
177 words
Spherical-shaped particles having an average diameter of 10 to 100 microns, of a copolymer of (a) alpha-olefins of the formula R--CH═CH 2 , where R is a radical selected from the class consisting of hydrogen and alkyl radicals having from 1 to 8 carbon atoms, and (b) an alpha, beta-ethylenically unsaturated carboxylic acids having from 3 to 8 carbon atoms, said copolymer having from 0 to 90% of the carboxylic acid groups ionized by neutralization with metal ions, said metal ions having an ionized valence of from 1 to 3 inclusive when the unsaturated acid is a monocarboxylic acid and an ionized valence of one when the unsaturated acid is a dicarboxylic acid and said metal ions being selected from the group consisting of uncomplexed and complexed metal ions, said copolymer being a direct copolymer of the alpha-olefins and the unsaturated carboxylic acid in which the carboxylic acid groups are randomly distributed over all molecules and in which 1 the alpha-olefin content of the copolymer is at least 50 mol percent, based on the alpha-olefinacid copolymer, 2.
Claim 3
Dependent Claim
46 words
the unsaturated carboxylic acid content of the copolymer is from 0.2 to 25 mol percent, based on the alpha-olefin-acid copolymer, and 3. any other monomer component optionally copolymerized in said copolymer is monothylenically unsaturated, characterized in that the surfaces of the polymer particles are rough and
Claim 4
Dependent Claim
46 words
the unsaturated carboxylic acid content of the copolymer is from 0.2 to 25 mol percent, based on the alpha-olefin-acid copolymer, and 3. any other monomer component optionally copolymerized in said copolymer is monothylenically unsaturated, characterized in that the surfaces of the polymer particles are rough and
Claim 5
Dependent Claim
30 words
convered with hemispherical-shaped bumps about 0.1 micron in diameter. 2. Polymer particles according to claim 1 wherein the packed density of the particles is greater than 32 lbs./ft. 3 .
Claim 6
Dependent Claim
31 words
Polymer particles according to claim 1 wherein the copolymer is an ionic copolymer having from 10 to 90% by weight of the carboxylic acid groups ionized by neutralization with metal ions.
Claim 7
Dependent Claim
23 words
Polymer particles according to claim 3 wherein the metal ions are taken from the group consisting of Na + and Zn +2 .
Claim 8
Dependent Claim
14 words
Polymer particles according to claim 3 wherein the copolymer is ethylene/methacrylic acid ionic copolymer.
Claim 9
Dependent Claim
68 words
Polymer particles according to claim 1 wherein the copolymer is a copolymer of alpha-olefins of the formula R--CH═CH 2 , where R is a radical selected from the class consisting of hydrogen and alkyl radicals having from 1 to 8 carbon atoms, and alpha, beta-ethylenically unsaturated carboxylic acids having from 3 to 8 carbon atoms, said copolymer having none of the carboxylic acid groups neutralized with metal ions.
Claim 10
Dependent Claim
12 words
Polymer particles according to claim 6 wherein the copolymer is ethylene/methacrylic acid.
Claim 11
Dependent Claim
13 words
Polymer particles according to claim 1 wherein the copolymer is ethylene/methacrylic acid/isobutyl acrylate.
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) | 1980-10-31 | 1981-05-02 | 1981-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-31 | 1985-05-02 | 1985-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-31 | 1989-05-02 | 1989-11-01 | $7700.00 | Window Closed / Lapsed |