Patent US4579925A successfully refreshed from Google Patents.
US4579925A
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Powder coating composition
Assignee: Mitsubishi Gas Chemical Co Inc
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Filing: 1985-04-25
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Granted: 1986-04-01
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Expires: 2005-04-25
Abstract
Abstract A powder coating composition comprising an ethylenically unsaturated compound (a) represented by the general formula ##STR1## (wherein R 1 is H or CH 3 ) and a polymerization catalyst (b) or said ethylenically unsaturated compound (a), a polymerization catalyst (b) and an epoxy (meth)acrylate (c) obtained by reacting a polyepoxide compound with an α,β-unsaturated monocarboxylic acid, wherein the weight ratio of the component (a)/the component (c) is 90 to 20 parts by weight/10 to 80 parts by weight.
Inventors
- 👤 Kazuo Ueno
- 👤 Minoru Yokoshima
- 👤 Tomotaka Onizuka
- 👤 Kazuhiko Sato
- 👤 Hiroyuki Okumura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:44
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/026; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/28
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
30 words
A powder coating composition comprising an ethylenically unsaturated compound (a) represented by the general formula ##STR4## (wherein R 1 is H or CH 3 ) and a polymerization catalyst (b).
Claim 2
Dependent Claim
30 words
A powder coating composition comprising an ethylenically unsaturated compound (a) represented by the general formula ##STR4## (wherein R 1 is H or CH 3 ) and a polymerization catalyst (b).
Claim 3
Dependent Claim
67 words
A powder coating composition comprising an ethylenically unsaturated compound (a) represented by the general formula ##STR5## (wherein R 1 is H or CH 3 ), a polymerization catalyst (b) and an epoxy (meth)acrylate (c) obtained by reacting a polyepoxide compound with an α,β-unsaturated monocarboxylic acid, wherein the weight ratio of the components (a)/(c) is 90 to 20 parts by weight / 10 to 80 parts by weight.
Claim 4
Dependent Claim
67 words
A powder coating composition comprising an ethylenically unsaturated compound (a) represented by the general formula ##STR5## (wherein R 1 is H or CH 3 ), a polymerization catalyst (b) and an epoxy (meth)acrylate (c) obtained by reacting a polyepoxide compound with an α,β-unsaturated monocarboxylic acid, wherein the weight ratio of the components (a)/(c) is 90 to 20 parts by weight / 10 to 80 parts by weight.
Claim 5
Dependent Claim
17 words
A composition according to claim 1 or 2, wherein R 1 of the general formula is H.
Claim 6
Dependent Claim
31 words
A composition according to claim 1 or 2, wherein the polymerization catalyst is at least one member selected from diacyl peroxides, ketone peroxides, dialkyl peroxides, alkyl peresters, percarbonates, peroxyketals and hydroperoxides.
Claim 7
Dependent Claim
47 words
A composition according to claim 1 or 2, wherein the polymerization catalyst is used in an amount of 0.5 to 3.0% by weight based on the ethylenically unsaturated compound (a) or based on the total amount of the ethylenically unsaturated compound (a) and the epoxy (meth)acrylate (c).
Claim 8
Dependent Claim
18 words
A composition according to claim 2, wherein the polyepoxide compound has an epoxy equivalent of 300 or more.
Claim 9
Dependent Claim
17 words
A composition according to claim 2, wherein the α,β-unsaturated monocarboxylic acid is acrylic acid or methacrylic acid.
Claim 10
Dependent Claim
21 words
A composition according to claim 6, wherein the polyepoxide compound is obtained by reacting an epihalohydrin with a bisphenol type compound.
Claim 11
Dependent Claim
13 words
A composition according to claim 8, wherein the bisphenol type compound is 2,2-bis(4-hydroxyphenyl)propane.
Claim 12
Dependent Claim
27 words
A composition according to claim 1 or 2, wherein at least one member selected from coloring agents, inorganic or organic fillers, plasticizers and fluidity modifiers is incorporated.
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) | 1989-03-31 | 1989-09-30 | 1990-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-31 | 1993-09-30 | 1994-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-31 | 1997-09-30 | 1998-04-01 | $7700.00 | Window Closed / Lapsed |