Patent US4886551A successfully refreshed from Google Patents.
US4886551A
Expired / Lapsed
US
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Method for improving the scratch resistance and increasing the sliding ability of coated surfaces and improved coating materials
Assignee: Evonik Operations GmbH
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Filing: 1987-10-06
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Granted: 1989-12-12
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Expires: 2007-10-06
Abstract
Abstract Compounds of the general formula ##STR1## wherein R 1 is alkyl with 1 to 8 carbon atoms, R 2 is --O-- or --(CH 2 ) p O--, in which p=2, 3 or 4, R 3 is hydrogen, alkyl with 1 to 4 carbon atoms or acyl, n is 40 to 60 m is 0 to 3, x and y being selected so that the molecular weight of the polyoxyalkylene block is 1400 to 3000 and the molar ratio of x:y is 0.8 to 2.2, are added to coating compositions, such as paint, varnish or lacquer, in amounts of 0.001 to 0.5% by weight, based on the coating composition. This improves the scratch resistance and the sliding ability of the cured coatings.
Inventors
- 👤 Hans-Ferdi Fink
- 👤 Roland Berger
- 👤 Wernfried Heilen
- 👤 Peter Muss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:56
CPC Classifications
C; C09; C09D; C09D7/00; C09D7/40; C09D7/65; C09D5/00; C08; C08L; C08L83/00; C08L83/10; C08L83/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
143 words
In a coating composition selected from the group consisting essentially of a paint, a lacquer or a varnish adapted to be applied to a substrate to form a scratch-resistant coating on the substrate which has pronounced sliding capability, the improvement which comprises that the composition comprises an amount effective to reduce sliding resistance of a compound of the general formula ##STR4## wherein R 1 is alkyl with 1 to 8 carbon atoms, R 2 is --O-- or --(CH 2 ) p O--, in which p =2, 3 or 4, R 3 is hydrogen, alkyl with 1 to 4 carbon atoms or acyl, n is 40 to 60, and m is 0 to 3, x and y being selected so that the molecular weight of the polyoxyalkylene block is 1400 to 3000 and the molar ratio of x : y is 0.8 to 2.2.
Claim 2
Dependent Claim
143 words
In a coating composition selected from the group consisting essentially of a paint, a lacquer or a varnish adapted to be applied to a substrate to form a scratch-resistant coating on the substrate which has pronounced sliding capability, the improvement which comprises that the composition comprises an amount effective to reduce sliding resistance of a compound of the general formula ##STR4## wherein R 1 is alkyl with 1 to 8 carbon atoms, R 2 is --O-- or --(CH 2 ) p O--, in which p =2, 3 or 4, R 3 is hydrogen, alkyl with 1 to 4 carbon atoms or acyl, n is 40 to 60, and m is 0 to 3, x and y being selected so that the molecular weight of the polyoxyalkylene block is 1400 to 3000 and the molar ratio of x : y is 0.8 to 2.2.
Claim 3
Dependent Claim
20 words
The improvement of claim 1, wherein said effective amount is 0.001 to 0.5% by weight, based on the coating composition.
Claim 4
Dependent Claim
12 words
The improvement of claims 1 or 2, wherein R 1 is methyl.
Claim 5
Dependent Claim
13 words
The improvement of claims 1 or 2, wherein R 1 is linear alkyl.
Claim 6
Dependent Claim
20 words
The improvement of claims 1 or 2, wherein R 1 is a branched alkyl with 3 to 8 carbon atoms.
Claim 7
Dependent Claim
21 words
The improvement of claims 1 or 2, wherein R 2 is a divalent group which links siloxy to a polyoxyalkylene block.
Claim 8
Dependent Claim
30 words
The improvement of claim 6 wherein the linking between the Si atom of siloxy and the carbon atom of the polyoxyalkylene block is effected through oxygen or a carbon atom.
Claim 9
Dependent Claim
12 words
The improvement of claims 1 or 2, wherein R 3 is acetyl.
Claim 10
Dependent Claim
12 words
The improvement of claims 1 or 2, wherein m =0 to 2.
Claim 11
Dependent Claim
20 words
The improvement of claims 1 or 2, wherein the polyoxyalkylene blocks of Formula I comprise oxyethylene units and oxypropylene units.
Claim 12
Dependent Claim
18 words
The improvement of claim 10, wherein the ratio of oxyethylene units to oxypropylene units is 0.9 : 1.6.
Claim 13
Dependent Claim
26 words
The improvement as claimed in claim 1, wherein said coating composition is a paint, a lacquer or a varnish and said substrate is wood or metal.
References Cited (Backward Citations)
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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) | 1992-12-11 | 1993-06-12 | 1993-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-11 | 1997-06-12 | 1997-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-11 | 2001-06-12 | 2001-12-12 | $7700.00 | Window Closed / Lapsed |