US4935286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stain and scratch resistant resilient surface coverings
Assignee: AWI Licensing LLC
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Filing: 1986-12-23
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Granted: 1990-06-19
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Expires: 2006-12-23
Abstract
Abstract The present invention relates to surface coverings, and in particular to coverings which comprise treated polyurethane or other wear layers. A coating comprising an aminoplast which is preferably a melamine which is at least partially etherified with alkyl groups comprising 4 to 10 carbon atoms, a vinyl modifier resin, a polyol, and an acid catalyst is formed on a release surface and thermally cured. A crosslinkable wear layer composition is then cast on the cured layer and crosslinked, and the composite is transferred to a support surface. Surface coverings are produced which exhibit surprising resistance to common household stains, and also improved scratch resistance.
Inventors
- 👤 Jack H. Witman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:40
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/12; C; C09; C09D; C09D127/00; C09D127/02; C09D127/04; C09D127/06; C09D161/00; C09D161/20; C09D161/32; D06N3/0086; D06N3/0095; D06N3/04; D06N3/06; D06N3/065; C08; C08L; C08L61/00; C08L61/20; C08L61/22; C08L61/24; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/249921; Y10T428/249953; Y10T428/249955; Y10T428/249958; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31942
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
55 words
A surface covering comprising a resilient support and a crosslinked wear layer adhered thereto, the upper portion of the wear layer being formed from a composition comprising: (a) an aminoplast, (b) a vinyl resin, (c) a polyol, (d) a catalyst, and (e) a solvent, the solvent comprising at least 64% by weight of the composition.
Claim 2
Dependent Claim
55 words
A surface covering comprising a resilient support and a crosslinked wear layer adhered thereto, the upper portion of the wear layer being formed from a composition comprising: (a) an aminoplast, (b) a vinyl resin, (c) a polyol, (d) a catalyst, and (e) a solvent, the solvent comprising at least 64% by weight of the composition.
Claim 3
Dependent Claim
12 words
The surface covering of claim 1 wherein the aminoplast is a melamine.
Claim 4
Dependent Claim
21 words
The surface covering of claim 2 wherein the melamine is alkyl etherified with alkyl groups comprising 1 to 10 carbon atoms.
Claim 5
Dependent Claim
22 words
The surface covering of claim 3 wherein the melamine which is alkyl etherified with alkyl groups comprising 1 to 4 carbon atoms.
Claim 6
Dependent Claim
53 words
The surface covering of claim 1 in which the crosslinked wear layer is a composite, the lower portion of the wear layer disposed between the upper portion of the wear layer and the resilient support is derived from materials selected from the group consisting of urethanes, acrylated urethanes, methacrylated urethanes and unsaturated polyesters.
Claim 7
Dependent Claim
19 words
The surface covering of claim 1 wherein the vinyl resin is a copolymer of vinyl chloride and vinyl acetate.
Claim 8
Dependent Claim
33 words
The surface coating of claim 1 wherein the vinyl resin is selected from the group consisting of polyvinyl acetal, polyvinyl ester and a combination of polyvinyl acetal with polyvinyl alcohol or polyvinyl ester.
Claim 9
Dependent Claim
22 words
The surface covering of claim 1 wherein the ratio of vinyl resin to aminoplast/polyol mixture is from 4 to 0.25 by weight.
Claim 10
Dependent Claim
20 words
The surface covering of claim 1 wherein the ratio of aminoplast to polyol is from 5 to 0.2 by weight.
Claim 11
Dependent Claim
35 words
The surface covering of claim 1 wherein the ratio of vinyl resin to aminoplast/polyol is from 3.5 to 0.33 by weight, and the ratio of aminoplast to polyol is from 3 to 0.33 by weight.
Claim 12
Dependent Claim
35 words
The surface covering of claim 1 wherein the ratio of vinyl resin to aminoplast/polyol is from 3.5 to 0.5 by weight and the ratio of aminoplast to polyol is from 3 to 0.33 by weight.
Claim 13
Dependent Claim
24 words
The surface covering of claim 1 wherein adhesion between the crosslinked wear layer and the resilient support is facilitated by a key coat layer.
Claim 14
Dependent Claim
31 words
The surface covering of claim 5 wherein the upper portion of the wear layer receives a corona discharge pretreatment prior to disposition of the lower portion of the wear layer thereto.
Claim 15
Dependent Claim
22 words
The surface covering of claim 13 in which a key coat layer is disposed between the wear layer and the resilient support.
Claim 16
Dependent Claim
23 words
The surface covering of claim 14 wherein the resilient support comprises a resilient carrier and a decorative layer comprising vinyl resin and pigments.
Claim 17
Dependent Claim
86 words
The surface covering of claim 15 wherein the upper portion of the wear layer is 0.2 to 1.5 mil thick and comprises the reaction product of a composition including (a) a melamine aminoplast, (b) a vinyl copolymer resin, (c) a polyol, and (d) p-toluenesulfonic acid catalyst; the lower portion of the wear layer is a moisture cured polyurethane wear layer; the key coat layer comprises a vinyl chloride/vinyl acetate copolymer resin; and the vinyl resin of the decorative layer is a vinyl chloride/vinyl acetate copolymer resin.
Claim 18
Dependent Claim
15 words
The surface covering of claim 16 wherein (b) is a vinyl chloride/vinyl acetate copolymer resin.
Claim 19
Dependent Claim
12 words
The surface covering of claim 17 wherein the resilient carrier is felt.
Claim 20
Dependent Claim
12 words
The surface covering of claim 17 wherein the resilient carrier is foam.
Claim 21
Dependent Claim
12 words
The surface covering of claim 17 wherein the polyol is cyclohexane dimethanol.
Claim 22
Dependent Claim
12 words
The surface covering of claim 17 wherein the polyol is an esterdiol.
Claim 23
Dependent Claim
13 words
The surface covering of claim 1 wherein the aminoplast is a urea resin.
Claim 24
Dependent Claim
31 words
The surface covering of claim 1 wherein the upper portion of the wear layer receives a corona discharge pretreatment prior to disposition of the lower portion of the wear layer thereto.
Claim 25
Dependent Claim
42 words
A surface covering comprising a resilient support and a crosslinked wear layer adhered thereto, the upper portion of the wear layer being the reaction product of a composition consisting essentially of: (a) an aminoplast, (b) a vinyl resin, and (c) a polyol.
Claim 26
Dependent Claim
42 words
A surface covering comprising a resilient support and a crosslinked wear layer adhered thereto, the upper portion of the wear layer being the reaction product of a composition consisting essentially of: (a) an aminoplast, (b) a vinyl resin, and (c) a polyol.
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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) | 1993-06-18 | 1993-12-18 | 1994-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-18 | 1997-12-18 | 1998-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-18 | 2001-12-18 | 2002-06-19 | $7700.00 | Window Closed / Lapsed |