Patent US3857915A successfully refreshed from Google Patents.
US3857915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Embossed plastic surface covering and method of preparing same
Assignee: Individual
•
Filing: 1972-02-22
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Granted: 1974-12-31
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Expires: 1992-02-22
Abstract
Abstract A chemically embossed vinyl chloride resin sheet material is prepared by treating the gelled surface of a vinyl chloride resin plastisol containing a blowing agent with a liquid which contains a monomer subject to polymerization and a polymerization catalyst for said monomer, whereby on subsequent heating of the treated gelled vinyl chloride resin sheet material and decomposition of the blowing agent, full expansion of the sheet material is prevented by the polymerization of the monomer in the treated areas, thereby producing a chemically embossed product.
Inventors
- 👤 R Crowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:28
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; Y; Y10; Y10S; Y10S264/00; Y10S264/82
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
107 words
A METHOD OF CHEMICALLY EMBOSSING A GAS-EXPANDABLE VINYL-CHLORIDE RESIN SHEET MATERIAL, WHICH METHOD COMPRISES: A. APPLYING TO SURFACE PORTIONS OF SAID SHEET MATERIAL IN A PREDETERMINED PATTERN AN ESTER OF ACRYLIC ACID AND A PEROXIDE CROSS LINKING AGENT WHICH WILL CROSS-LINK SAID ESTER ON HEATING; AND B. HEATING THE TREATED SHEET MATERIAL TO A TEMPERATURE SUFFICIENT TO POLYMERIZE THE ESTER BY THE CROSS-LINING AGENT AND TO CAUSE THE SHEET TO EXPAND, WHEREBY THE SURFACE OF THE PORTION OF THE SHEET MATERIAL TO WHICH THE UNSATURATED COMPOUND HAS NOT BEEN APPLIED RISES ABOVE THE LEVEL OF THE SURFACE OF THE APPLIED PORTIONS TO FORM A CHEMICALLY EMBOSSED PRODUCT.
Claim 2
Independent Claim
107 words
A METHOD OF CHEMICALLY EMBOSSING A GAS-EXPANDABLE VINYL-CHLORIDE RESIN SHEET MATERIAL, WHICH METHOD COMPRISES: A. APPLYING TO SURFACE PORTIONS OF SAID SHEET MATERIAL IN A PREDETERMINED PATTERN AN ESTER OF ACRYLIC ACID AND A PEROXIDE CROSS LINKING AGENT WHICH WILL CROSS-LINK SAID ESTER ON HEATING; AND B. HEATING THE TREATED SHEET MATERIAL TO A TEMPERATURE SUFFICIENT TO POLYMERIZE THE ESTER BY THE CROSS-LINING AGENT AND TO CAUSE THE SHEET TO EXPAND, WHEREBY THE SURFACE OF THE PORTION OF THE SHEET MATERIAL TO WHICH THE UNSATURATED COMPOUND HAS NOT BEEN APPLIED RISES ABOVE THE LEVEL OF THE SURFACE OF THE APPLIED PORTIONS TO FORM A CHEMICALLY EMBOSSED PRODUCT.
Claim 3
Dependent Claim
14 words
The method of claim 1 wherein the ester of acrylic acid is allyl acrylate.
Claim 4
Dependent Claim
13 words
The method of claim 1 wherein the peroxide cross-linking agent is benzoyl peroxide.
Claim 5
Dependent Claim
22 words
The method of claim 1 wherein said sheet material, prior to the applying step, is essentially free of any polymerizable materials therein.
Claim 6
Dependent Claim
23 words
The method of claim 1 wherein the ester is applied to the selected portions of the sheet material in a liquid printing ink.
Claim 7
Dependent Claim
14 words
The method of claim 5 wherein the printing ink contains the peroxide cross-linking agent.
Claim 8
Dependent Claim
28 words
The method of claim 5 wherein the printing ink contains from about 5 to 50 percent of the ester and about 2 to 25 percent of the peroxide.
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) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |