Patent US4165406A successfully refreshed from Google Patents.
US4165406A
Expired / Lapsed
US
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Powdery coating composition and process for preparing the same
Assignee: Dai Nippon Toryo Co Ltd
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Filing: 1978-06-23
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Granted: 1979-08-21
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Expires: 1998-06-23
Abstract
Abstract This invention relates to a powdery coating composition having excellent anti caking ability, which comprises polymer particles having an average particle size of 0.5 to 200μ composed of a polymer having a softening point not exceeding 90° C. as a core component and polymer having a softening point of at least 100° C. as an outer component covering said core compound, and to a process for the preparation of such powdery coating composition.
Inventors
- 👤 Hideyoshi Tugukuni
- 👤 Masafumi Kano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:20
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/006; C08F265/00; C08F265/04; C09; C09D; C09D5/00; C09D5/03; C09D5/031; Y; Y10; Y10S; Y10S524/00; Y10S524/901; Y10S524/902; Y10S524/904; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998; Y10T428/31504; Y10T428/31511; Y10T428/31786; Y10T428/3179; Y10T428/31971
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
102 words
A powdery coating composition comprising polymer particles having an average particle size within the range of 0.5 to 200μ and composed of, as a core component, a polymer having a softening point not exceeding 90° C. and selected from the group consisting of epoxy resins and polyester resins, and, as an outer component, a polymer having a softening point of at least 100° C. and being selected from the group consisting of cellulosic plastics, wherein the weight ratio of the core component to the outer component is within the range from 50/50 to 100/1 and said outer component covers said core component.
Claim 2
Dependent Claim
102 words
A powdery coating composition comprising polymer particles having an average particle size within the range of 0.5 to 200μ and composed of, as a core component, a polymer having a softening point not exceeding 90° C. and selected from the group consisting of epoxy resins and polyester resins, and, as an outer component, a polymer having a softening point of at least 100° C. and being selected from the group consisting of cellulosic plastics, wherein the weight ratio of the core component to the outer component is within the range from 50/50 to 100/1 and said outer component covers said core component.
Claim 3
Dependent Claim
13 words
The composition of claim 1 wherein the core component is an epoxy resin.
Claim 4
Dependent Claim
12 words
The composition of claim 2 wherein the cellulosic plastic is ethyl cellulose.
Claim 5
Dependent Claim
13 words
The composition of claim 1 wherein the core component is a polyester resin.
Claim 6
Dependent Claim
12 words
The composition of claim 4 wherein the cellulosic plastic is hydroxyethyl cellulose.
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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) | 1982-08-20 | 1983-02-19 | 1983-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-20 | 1987-02-19 | 1987-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-20 | 1991-02-19 | 1991-08-21 | $7700.00 | Window Closed / Lapsed |