US4710408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primer coating for cycloolefin polymer articles
Assignee: Hercules LLC
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Filing: 1986-07-11
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Granted: 1987-12-01
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Expires: 2006-07-11
Abstract
Abstract Disclosed is a primer coating for cycloolefin polymer articles comprising an alkyd resin, a urea-formaldehyde resin, at least one 2-4 carbon alkanol, a nonleafing aluminum pigment and an acid catalyst. A cellulose ester and a solvent for the cellulose ester may also be included. The primer coating prevents migration of antioxidant from the cycloolefin polymer into a subsequently applied topcoat.
Inventors
- 👤 Wayne A. Kraus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:36
CPC Classifications
C; C09; C09D; C09D167/00; C09D167/08; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J2365/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
64 words
A primer coating composition for cycloolefin polymer articles comprising (a) from about 8% to about 46% alkyd resin, (b) from about 3% to about 18% urea-formaldehyde resin, (c) from about 25% to about 83% of at least one 2-4 carbon alkanol, (d) from about 1.5% to about 24% of nonleafing aluminum pigment, and (e) from about 0.5% to about 3.5% of an acid catalyst.
Claim 2
Dependent Claim
64 words
A primer coating composition for cycloolefin polymer articles comprising (a) from about 8% to about 46% alkyd resin, (b) from about 3% to about 18% urea-formaldehyde resin, (c) from about 25% to about 83% of at least one 2-4 carbon alkanol, (d) from about 1.5% to about 24% of nonleafing aluminum pigment, and (e) from about 0.5% to about 3.5% of an acid catalyst.
Claim 3
Dependent Claim
11 words
The composition of claim 1 wherein the cellulose ester is nitrocellulose.
Claim 4
Dependent Claim
15 words
The composition of claim 1 wherein the alkanol is a mixture of ethanol and butanol.
Claim 5
Dependent Claim
11 words
The composition of claim 1 wherein the catalyst is para-toluenesulfonic acid.
Claim 6
Dependent Claim
11 words
The composition of claim 1 wherein the cycloolefin polymer is poly(dicyclopentadiene).
Claim 7
Dependent Claim
85 words
A process for preventing staining of painted cycloolefin polymer articles comprising applying a primer coating composition to the articles, said composition comprising (a) from about 8% to about 46% alkyd resin, (b) from about 3% to about 18% urea-formaldehyde resin, (c) from about 25% to about 83% of at least on 2-4 carbon alkanol, (d) from about 1.5% to about 24% nonleafing aluminum pigment, and (e) from about 0.5% to about 3.5% of an acid catalyst, and then causing the composition to cross-link before painting.
Claim 8
Dependent Claim
85 words
A process for preventing staining of painted cycloolefin polymer articles comprising applying a primer coating composition to the articles, said composition comprising (a) from about 8% to about 46% alkyd resin, (b) from about 3% to about 18% urea-formaldehyde resin, (c) from about 25% to about 83% of at least on 2-4 carbon alkanol, (d) from about 1.5% to about 24% nonleafing aluminum pigment, and (e) from about 0.5% to about 3.5% of an acid catalyst, and then causing the composition to cross-link before painting.
Claim 9
Dependent Claim
11 words
The process of claim 13 wherein the cellulose ester is nitrocellulose.
Claim 10
Dependent Claim
15 words
The process of claim 6 wherein the alkanol is a mixture of ethanol and butanol.
Claim 11
Dependent Claim
11 words
The process of claim 6 wherein the catalyst is para-toluenesulfonic acid.
Claim 12
Dependent Claim
11 words
The process of claim 6 wherein the cycloolefin polymer is poly(dicyclopentadiene).
Claim 13
Dependent Claim
40 words
The composition of claim 1 which additionally comprises from about 2% to about 22% of a cellulose ester and from about 2.5% to about 11% of a solvent for the cellulose ester, based on the total weight of the composition.
Claim 14
Dependent Claim
11 words
The composition of claim 11 wherein the cycloolefin polymer is poly(dicyclopentadiene).
Claim 15
Dependent Claim
42 words
The process of claim 6 wherein the composition additionally comprises from about 2% to about 22% of a cellulose ester and from about 2.5% to about 11% of a solvent for the cellulose ester, based on the total weight of the composition.
Claim 16
Dependent Claim
11 words
The process of claim 13 wherein the cycloolefin polymer is poly(dicyclopentadiene).
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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) | 1990-11-30 | 1991-06-01 | 1991-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-30 | 1995-06-01 | 1995-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-30 | 1999-06-01 | 1999-12-01 | $7700.00 | Window Closed / Lapsed |