Patent US3928703A successfully refreshed from Google Patents.
US3928703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for coating a substrate with a fluorinated organic polymer and product thereof
Assignee: Saint Gobain Performance Plastics Corp
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Filing: 1973-12-10
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Granted: 1975-12-23
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Expires: 1993-12-10
Abstract
Abstract A substrate is coated with a smooth, continuous coating of a fluorinated organic polymer containing spherical beads, which have a maximum diameter of 25 microns, and are capable of withstanding the fusion temperature of the polymer. The coating is applied from a suspensoid and is fused to form a coated, nonporous substrate which is free of mud cracks or pinholes, thereby eliminating weathering effects and providing a more abrasionresistant material. The substrate may be relatively thick and may have a relatively loose weave for strength and flexibility in the final coated product.
Inventors
- 👤 John Ransom Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:44
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/0405; C08J5/043; D; D06; D06N; D06N3/00; D06N3/04; D06N3/047; C08J2327/00; C08J2327/02; C08J2327/12; C08J2327/18; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/252; Y10T428/26; Y10T428/266; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T442/00; Y10T442/20; Y10T442/2213; Y10T442/2631; Y10T442/2713
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
129 words
A METHOD FOR COATING A SUBSTRATE SELECTED FROM THE GROUP CONSISTING ESSENTIALLY OF WOVEN AND NON-WOVEN FIBERGLASS, ABSESTOS, AND WIRE CLOTH WITH A FLUORINATED ORGANIC POLYMER, WHEREIN THE SUBSTRATE CONTAINS OPENINGS AS LARGE AS ABOUT 12 MILS, WHICH COMPRISES THE STEPS OF: A. PREPARING A LIQUID SUSPENSOID CONTAINING THE FLUORINATED ORGANIC POLYMER AND SPHERICAL BEADS, THE MAJOR PORTION OF WHICH HAVE A MAXIMUM DIAMETER OF 25 MICRONS OR LESS AND WHICH ARE CAPABLE OF BEING SUSPENDED IN THE SUSPENSOID AND WILL WITHSTAND THE FUSION TEMPERATURE OF THE POLYMER; B. APPLYING THE SUSPENSOID TO THE SUBSTRATE TO FORM A COATED SUBSTRATE MATERIAL; C. EVAPORATING THE SUSPENSOID LIQUID MEDIUM; AND D. HEATING THE COATED SUBSTRATE TO AT LEAST THE FUSION TEMPERATURE OF THE POLYMER OF FORM A DRIED NON-POROUS COATED PRODUCT.
Claim 2
Independent Claim
129 words
A METHOD FOR COATING A SUBSTRATE SELECTED FROM THE GROUP CONSISTING ESSENTIALLY OF WOVEN AND NON-WOVEN FIBERGLASS, ABSESTOS, AND WIRE CLOTH WITH A FLUORINATED ORGANIC POLYMER, WHEREIN THE SUBSTRATE CONTAINS OPENINGS AS LARGE AS ABOUT 12 MILS, WHICH COMPRISES THE STEPS OF: A. PREPARING A LIQUID SUSPENSOID CONTAINING THE FLUORINATED ORGANIC POLYMER AND SPHERICAL BEADS, THE MAJOR PORTION OF WHICH HAVE A MAXIMUM DIAMETER OF 25 MICRONS OR LESS AND WHICH ARE CAPABLE OF BEING SUSPENDED IN THE SUSPENSOID AND WILL WITHSTAND THE FUSION TEMPERATURE OF THE POLYMER; B. APPLYING THE SUSPENSOID TO THE SUBSTRATE TO FORM A COATED SUBSTRATE MATERIAL; C. EVAPORATING THE SUSPENSOID LIQUID MEDIUM; AND D. HEATING THE COATED SUBSTRATE TO AT LEAST THE FUSION TEMPERATURE OF THE POLYMER OF FORM A DRIED NON-POROUS COATED PRODUCT.
Claim 3
Dependent Claim
13 words
A method according to claim 1 wherein the spherical beads are glass beads.
Claim 4
Dependent Claim
18 words
A method according to claim 1 wherein the beads comprise about 5-50% by weight of the coated product.
Claim 5
Dependent Claim
16 words
A method accoding to claim 1 wherein the substrate is about 6 to 20 mils thick.
Claim 6
Dependent Claim
14 words
A method according to claim 1 wherein the substrate is pre-treated with silicone oil.
Claim 7
Dependent Claim
20 words
A method according to claim 1 wherein the substrate is pre-treated by application of a layer consisting essentially of polytetrafluoroethylene.
Claim 8
Dependent Claim
23 words
A method according to claim 1 wherein the fluorinated organic polymer is selected from the group consisting of polytetrafluoroethylene and fluorinated ethylene-propylene polymers.
Claim 9
Dependent Claim
13 words
A method according to claim 7 wherein the fluorinated organic polymer is polytetrafluoroethylene.
Claim 10
Dependent Claim
19 words
A method according to claim 1 wherein the spherical beads have a maximum diameter of less than 10 microns.
Claim 11
Dependent Claim
71 words
A SMOOTH, NON-POROUS PRODUCT COMPRISING A SUBSTRATE SELECTED FROM THE GROUP CONSISTING ESSENTIALLY OF WOVEN AND NON-WOVEN FIBERGLASS, ASBESTOS, AND WIRE CLOTH HAVING A COATING WHICH COMPRISES A FLUORINATE ORGANIC POLYMER AD SPHERICAL BEADS, THE MAJOR PORTION OF WHICH HAVE A MAXIMUM DIAMETER OF 25 MICRONS OR LESS AND WHICH CAN WITHSTAND THE FUSION TEMPERATURE OF THE POLYMER, SAID SUBSTRATE HAVING OPENINGS IN ITS STRUCTURE AS LARGE AS ABOUT 12 MILS.
Claim 12
Dependent Claim
71 words
A SMOOTH, NON-POROUS PRODUCT COMPRISING A SUBSTRATE SELECTED FROM THE GROUP CONSISTING ESSENTIALLY OF WOVEN AND NON-WOVEN FIBERGLASS, ASBESTOS, AND WIRE CLOTH HAVING A COATING WHICH COMPRISES A FLUORINATE ORGANIC POLYMER AD SPHERICAL BEADS, THE MAJOR PORTION OF WHICH HAVE A MAXIMUM DIAMETER OF 25 MICRONS OR LESS AND WHICH CAN WITHSTAND THE FUSION TEMPERATURE OF THE POLYMER, SAID SUBSTRATE HAVING OPENINGS IN ITS STRUCTURE AS LARGE AS ABOUT 12 MILS.
Claim 13
Dependent Claim
16 words
A product according to claim 10 wherein the substrate is about 6 to 20 mils thick.
Claim 14
Dependent Claim
23 words
A product according to claim 10 wherein the fluorinated organic polymer is selected from the group consisting of polytetrafluoroethylene and fluorinated ethylene-propylene polymers.
Claim 15
Dependent Claim
13 words
A product according to claim 12 wherein the fluorinated organic polymer is polytetrafluoroethylene.
Claim 16
Dependent Claim
19 words
A product according to claim 10 wherein the spherical beads have a maximum diameter of less than 10 microns.
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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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |