US4569961A
Expired / Lapsed
US
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Polyurethane lacquers containing nitroso-aromatics
Assignee: Henkel AG and Co KGaA
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Filing: 1985-01-08
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Granted: 1986-02-11
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Expires: 2005-01-08
Abstract
Abstract An improved polyurethane lacquer for coating an elastomer containing at least one polyfunctional aromatic nitroso compound as an adhesion improver and optionally, lacquer-nonreactive spacer particles.
Inventors
- 👤 Riza N. Oezelli
- 👤 Hartmut Lippert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:30
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; C08K; C08K5/00; C08K5/16; C08K5/32; C09; C09D; C09D175/00; C08J2309/00; C08J2309/06; C08J2323/00; C08J2323/02; C08J2323/16; C08J2475/00
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
84 words
In a moisture-curing one-component polyurethane lacquer for coating a polar or apolar elastomer comprising at least one polyfunctional isocyanate compound, at least one solvent, and at least one auxiliary, the improvement consisting of the presence of an effective amount of at least one polyfunctional aromatic nitroso compound as an adhesion improver and wherein said lacquer further contains spacers in the form of lacquer-nonreactive solid particles which are free from sharp points and edges and have an average diameter of about 30 to 200 μm.
Claim 2
Dependent Claim
84 words
In a moisture-curing one-component polyurethane lacquer for coating a polar or apolar elastomer comprising at least one polyfunctional isocyanate compound, at least one solvent, and at least one auxiliary, the improvement consisting of the presence of an effective amount of at least one polyfunctional aromatic nitroso compound as an adhesion improver and wherein said lacquer further contains spacers in the form of lacquer-nonreactive solid particles which are free from sharp points and edges and have an average diameter of about 30 to 200 μm.
Claim 3
Dependent Claim
37 words
The improvement of claim 1 wherein said at least one nitroso compound is: (a) mononuclear or polynuclear; (b) substituted or unsubstituted; and (c) mononitroso or dinitroso in which the nitroso compounds are not on adjacent carbon atoms.
Claim 4
Dependent Claim
14 words
The improvement of claim 2 wherein said at least one nitroso compound is mononuclear.
Claim 5
Dependent Claim
25 words
The improvement of claim 2 wherein said at least one nitroso compound is dinitroso in which the nitroso compounds are not on adjacent carbon atoms.
Claim 6
Dependent Claim
25 words
The improvement of claim 3 wherein said at least one nitroso compound is dinitroso in which the nitroso compounds are not on adjacent carbon atoms.
Claim 7
Dependent Claim
14 words
The improvement of claim 2 wherein said at least one nitroso compound is unsubstituted.
Claim 8
Dependent Claim
14 words
The improvement of claim 5 wherein said at least one nitroso compound is unsubstituted.
Claim 9
Dependent Claim
32 words
The improvement of claim 1 wherein said at least one nitroso compound is: m-dinitrosonaphthalene; p-dinitrosonaphthalene; 1,3-dinitrosobenzene; 1,4-dinitrosobenzene; 1-methyl-4-isopropyl-2,5-dinitrosobenzene; 2-methyl-1,4-dinitrosobenzene; 2-methyl-5-chloro-1,4-dinitrosobenzene; 2-methyl-5-chloro-1,4-dinitrosobenzene; 2-fluoro-1,4-dinitrosobenzene; 2-methoxy-1,3-dinitrosobenzene; 5-chloro-1,3-dinitrosobenzene; 2-benzyl-1,4-dinitrosobenzene; 2-cyclohexyl-1,4-dinitrobenzene; or any mixture of the foregoing.
Claim 10
Dependent Claim
14 words
The improvement of claim 1 wherein said at least one nitroso compound is 1,4-dinitrosobenzene.
Claim 11
Dependent Claim
32 words
The improvement of claim 1 wherein said at least one nitroso compound is a suspension of 1,4-dinitrosobenzene in at least one solvent having an active substance content of about 30 to 40%.
Claim 12
Dependent Claim
29 words
The improvement of claim 1 wherein said at least one nitroso compound is present in a quantity effective to measurably improve the adhesion of said lacquer to said elastomer.
Claim 13
Dependent Claim
35 words
The improvement of claim 1 wherein said at least one nitroso compound is present in a quantity of about 0.5 to 4% by weight, based upon the weight of the solids content of the lacquer.
Claim 14
Dependent Claim
35 words
The improvement of claim 1 wherein said at least one nitroso compound is present in a quantity of about 1 to 2.5% by weight, based upon the weight of the solids content of the lacquer.
Claim 15
Dependent Claim
35 words
The improvement of claim 2 wherein said at least one nitroso compound is present in a quantity of about 0.5 to 4% by weight, based upon the weight of the solids content of the lacquer.
Claim 16
Dependent Claim
35 words
The improvement of claim 5 wherein said at least one nitroso compound is present in a quantity of about 1 to 2.5% by weight, based upon the weight of the solids content of the lacquer.
Claim 17
Dependent Claim
35 words
The improvement of claim 7 wherein said at least one nitroso compound is present in a quantity of about 1 to 2.5% by weight, based upon the weight of the solids content of the lacquer.
Claim 18
Dependent Claim
35 words
The improvement of claim 1 wherein said lacquer further contains spacers in the form of lacquer-nonreactive solid particles which are at least roughly spherical and have an average diameter of about 30 to 150 μm.
Claim 19
Dependent Claim
37 words
The improvement of claim 5 wherein said lacquer further contains spacers in the form of lacquer-nonreactive solid particles which are free from sharp points and edges and have an average diameter of about 30 to 150 μm.
Claim 20
Dependent Claim
35 words
The improvement of claim 7 wherein said lacquer further contains spacers in the form of lacquer-nonreactive solid particles which are at least roughly spherical and have an average diameter of about 30 to 150 μm.
Claim 21
Dependent Claim
27 words
The improvement of claim 1 wherein said particles are beads of at least one synthetic polymer, glass, mineral, metal, or a mixture of any of the foregoing.
Claim 22
Dependent Claim
16 words
The improvement of claim 1 wherein said particles are roughly spherical beads of predominantly polyvinyl chloride.
Claim 23
Dependent Claim
27 words
The improvement of claim 1 wherein said at least one polyfunctional isocyanate compound is a polyurethane prepolymer containing on average two or more predominantly terminal isocyanate groups.
Claim 24
Dependent Claim
32 words
The improvement of claim 1 wherein said at least one polyfunctional isocyanate compound is a polyurethane prepolymer based on aliphatic and/or aromatic diisocyanates and aliphatic di- or trihydric alcohols or ether alcohols.
Claim 25
Dependent Claim
31 words
The improvement of claim 23 said at least one polyfunctional isocyanate compound is a polyurethane prepolymer based on aliphatic and/or aromatic diisocyanates and aliphatic di- or trihydric alcohols or ether alcohols.
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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) | 1989-02-10 | 1989-08-12 | 1990-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-10 | 1993-08-12 | 1994-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-10 | 1997-08-12 | 1998-02-11 | $7700.00 | Window Closed / Lapsed |