Patent US4355073A successfully refreshed from Google Patents.
US4355073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive coatings of prepasted wall coverings
Assignee: Scott Bader Co Ltd
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Filing: 1980-06-13
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Granted: 1982-10-19
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Expires: 2000-06-13
Abstract
Abstract A prepasted wall covering has a dry coating (to be activated as the adhesive paste for the covering by immersion in water) formed from a "reverse" emulsion i.e. a water in oil emulsion of a water-soluble very high molecular weight synthetic polymer. The very low coating weight of 3-8 g/m 2 can be used because the water in oil emulsion has a comparatively low viscosity at high solids content.
Inventors
- 👤 Jack A. Knightley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:56
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/24; C09D133/26; C09J; C09J133/00; C09J133/24; C09J133/26; C09J7/00; C09J7/20; C09J7/21; C09J7/30; C09J7/32; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2813; Y10T428/283; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
67 words
A prepasted wall covering comprising a substrate and a dry coating, upon said substrate, said coating being activatable as an adhesive paste of said covering upon immersion in water, said coating being microscopically discontinuous and comprising particles of a water soluble synthetic polymer of molecular weight of at least 500,000, said polymeric coating having been prepared by applying to the substrate, a water-in-oil emulsion of said polymer.
Claim 2
Dependent Claim
67 words
A prepasted wall covering comprising a substrate and a dry coating, upon said substrate, said coating being activatable as an adhesive paste of said covering upon immersion in water, said coating being microscopically discontinuous and comprising particles of a water soluble synthetic polymer of molecular weight of at least 500,000, said polymeric coating having been prepared by applying to the substrate, a water-in-oil emulsion of said polymer.
Claim 3
Dependent Claim
17 words
A prepasted wall covering as claimed in claim 1 wherein the polymer is an acrylamide/acrylic acid copolymer.
Claim 4
Dependent Claim
23 words
A prepasted wall covering as claimed in claim 2 wherein the copolymer is cross-linked by a minor amount of a polyfunctional vinyl compound.
Claim 5
Dependent Claim
15 words
A prepasted wall covering as claimed in claim 1, the emulsion further comprising a dextrin.
Claim 6
Independent Claim
81 words
A method of making a prepasted, wall covering comprising a substrate and a dry discontinuous coating of discrete particles of a very high molecular weight water-soluble polymer, said coating being activatable as an adhesive paste for said substrate upon immersion in water, comprising a. forming a coating on said substrate by applying to said substrate a water-in-oil emulsion of said polymer, said emulsion having a high solids content and low viscosity, and b. drying said coating to provide said dry coating.
Claim 7
Independent Claim
81 words
A method of making a prepasted, wall covering comprising a substrate and a dry discontinuous coating of discrete particles of a very high molecular weight water-soluble polymer, said coating being activatable as an adhesive paste for said substrate upon immersion in water, comprising a. forming a coating on said substrate by applying to said substrate a water-in-oil emulsion of said polymer, said emulsion having a high solids content and low viscosity, and b. drying said coating to provide said dry coating.
Claim 8
Dependent Claim
20 words
A method as claimed in claim 5 wherein the coating weight is about 3 to about 8 g/m 2 .
Claim 9
Dependent Claim
70 words
A coating upon a prepasted wall covering said covering comprising a substrate and a dry said coating upon said substrate, said dry coating being activatable as an adhesive paste of said covering upon immersion in water, comprising a discontinuous dry coating of discrete particles of a very high molecular weight water soluble synthetic polymer, said polymeric coating being prepared by applying to said substrate a water-in-oil emulsion of said polymer.
Claim 10
Dependent Claim
70 words
A coating upon a prepasted wall covering said covering comprising a substrate and a dry said coating upon said substrate, said dry coating being activatable as an adhesive paste of said covering upon immersion in water, comprising a discontinuous dry coating of discrete particles of a very high molecular weight water soluble synthetic polymer, said polymeric coating being prepared by applying to said substrate a water-in-oil emulsion of said polymer.
Claim 11
Dependent Claim
18 words
A coating in accordance with claim 7, wherein the molecular weight of the polymer is at least 1,000,000.
Claim 12
Dependent Claim
28 words
A coating in accordance with claim 7 or 8 wherein the polymer is an acrylamide containing polymer including a minor amount of at least 1 polyfunctional vinyl compound.
Claim 13
Dependent Claim
26 words
A coating in accordance with claim 7 wherein the solids content of the emulsion is at least 10% and its viscosity does not exceed 30,000 cps.
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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) | 1985-10-18 | 1986-04-19 | 1986-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-18 | 1990-04-19 | 1990-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-18 | 1994-04-19 | 1994-10-19 | $7700.00 | Window Closed / Lapsed |