US4741860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesion promoters containing optical brightener
Assignee: PPG Industries Inc
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Filing: 1986-10-02
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Granted: 1988-05-03
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Expires: 2006-10-02
Abstract
Abstract A composition comprising a chlorinated polyolefin and an optical brightener is disclosed. The compositions are useful as detectable adhesion promoters for polyolefin substrates. The compositions are applied as a coating to the polyolefin substrate and the coated substrate exposed to an ultraviolet light source to determine uniformity of the coating over the substrate. Uniform coverage is necessary to develop optimum adhesion between the substrate and a subsequently applied paint layer.
Inventors
- 👤 Marvis E. Hartman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:48
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/35; C08K5/0008; C08K5/0041; C09; C09D; C09D123/00; C09D123/26; C09D123/28
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
89 words
A coating composition which when applied as a coating to a polyolefin substrate improves the adhesion of the polyolefin to other materials and which is readily detectable by ultraviolet light, comprising: (A) 20 to 80 percent by weight based on total solids weight of the composition of a chlorinated polyolefin and (B) at least 0.1 percent by weight based on total solids weight of the composition of an optical brightener and (C) 50 to 98 percent by weight based on total weight of the composition of an organic solvent.
Claim 2
Dependent Claim
89 words
A coating composition which when applied as a coating to a polyolefin substrate improves the adhesion of the polyolefin to other materials and which is readily detectable by ultraviolet light, comprising: (A) 20 to 80 percent by weight based on total solids weight of the composition of a chlorinated polyolefin and (B) at least 0.1 percent by weight based on total solids weight of the composition of an optical brightener and (C) 50 to 98 percent by weight based on total weight of the composition of an organic solvent.
Claim 3
Dependent Claim
33 words
The composition of claim 1 in which the optical brightener is present in the composition in amounts of about 0.1 to 2.5 percent by weight based on total solids weight of the composition.
Claim 4
Dependent Claim
14 words
The composition of claim 1 in which the chlorinated polyolefin is a chlorinated polypropylene.
Claim 5
Dependent Claim
17 words
The composition of claim 1 in which the chlorinated polyolefin contains from 15 to 50 percent chlorine.
Claim 6
Dependent Claim
13 words
The composition of claim 1 in which the optical brightener is a bisazole.
Claim 7
Dependent Claim
27 words
The composition of claim 5 in which the bisazole is of the structure: ##STR5## where R is hydrogen, alkyl and alkoxy and X is an unsaturated radical.
Claim 8
Dependent Claim
9 words
The composition of claim 6 wherein X is ##STR6##
Claim 9
Dependent Claim
16 words
The composition of claim 1 which also contains a resinous material different from the chlorinated polyolefin.
Claim 10
Dependent Claim
15 words
The composition of claim 8 in which the resinous material is a vinyl acetate copolymer.
Claim 11
Dependent Claim
15 words
The composition of claim 9 in which the resinous material is an ethylene-vinyl acetate copolymer.
Claim 12
Dependent Claim
32 words
The composition of claim 9 in which the vinyl acetate copolymer is present in the composition in amounts up to 89 percent by weight based on total solids weight of the composition.
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) | 1991-05-03 | 1991-11-02 | 1992-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-03 | 1995-11-02 | 1996-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-03 | 1999-11-02 | 2000-05-03 | $7700.00 | Window Closed / Lapsed |