Patent US3872041A successfully refreshed from Google Patents.
US3872041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic film
Assignee: Automation Industries Inc
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Filing: 1973-05-31
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Granted: 1975-03-18
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Expires: 1993-05-31
Abstract
Abstract A flexible and multi-directional stretchable sheet which is resistant to flame, moisture and degradation upon exposure to ultraviolet light and extreme temperature conditions, the sheet including a mixture of chlorinated polyethylene, polyvinylchloride, a heat stabilizer, a flame retardant, and a phosphate chelating agent.
Inventors
- 👤 Marvin A Koerber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:10
CPC Classifications
F; F16; F16L; F16L57/00; F16L57/04; C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/04; C08K5/09; C08K5/15; C08K5/49; C08K5/51; C08K5/52; C08K5/56; C08K5/57; C08L; C08L23/00; C08L23/26; C08L23/28; C08L23/286; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L63/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
144 words
A FLEXIBLE AND MULTI-DIRECTIONAL STRETCHABLE SHEET WHICH IS RESISTANT TO FLAME, MOISTURE AND DEGRADATION UPON EXPOSURE TO ULTRAVIOLET LIGHT AND TEMPERATURE BETWEEN -20*F AND 140*F, SAID SHEET CONSISTING ESSENTIALLY OF (A) A THERMOPLASTIC RESIN COMPONENT CONSISTING ESSENTIALLY OF FROM 45 TO 80 PERCENT, BY WEIGHT, OF CHLORINATED POLYETHYLENE AND FROM 20 TO 55 PERCENT, BY WEIGHT, OF POLYVINYLCHLORIDE; (B) FROM 2 TO 4 PARTS, BY WEIGHT, BASED ON THE RESIN COMPONENT, OF A HEAT STABILIZER SELECTED FROM THE GROUP CONSISTING OF AN EPOXY STABILIZER, A BARIUM-CADMIUM STABLIZER, AND AN ORGANA-TIN STABILIZER; (C) FROM 10 TO 35 PARTS, BY WEIGHT, BASED ON THE WEIGHT OF THE RESIN COMPONENT, OF A FLAME RETARDANT SELECTED FROM THE GROUP CONSISTING OF ALUMIUM OXIDE AND ANTIMONY OXIDE; AND (D) FROM 0.25 TO 2.0 PARTS, BY WEIGHT, BASED ON THE WEIGHT OF THE RESIN COMPONENT, OF A PHOSPHATE CHLEATING AGENT.
Claim 2
Dependent Claim
144 words
A FLEXIBLE AND MULTI-DIRECTIONAL STRETCHABLE SHEET WHICH IS RESISTANT TO FLAME, MOISTURE AND DEGRADATION UPON EXPOSURE TO ULTRAVIOLET LIGHT AND TEMPERATURE BETWEEN -20*F AND 140*F, SAID SHEET CONSISTING ESSENTIALLY OF (A) A THERMOPLASTIC RESIN COMPONENT CONSISTING ESSENTIALLY OF FROM 45 TO 80 PERCENT, BY WEIGHT, OF CHLORINATED POLYETHYLENE AND FROM 20 TO 55 PERCENT, BY WEIGHT, OF POLYVINYLCHLORIDE; (B) FROM 2 TO 4 PARTS, BY WEIGHT, BASED ON THE RESIN COMPONENT, OF A HEAT STABILIZER SELECTED FROM THE GROUP CONSISTING OF AN EPOXY STABILIZER, A BARIUM-CADMIUM STABLIZER, AND AN ORGANA-TIN STABILIZER; (C) FROM 10 TO 35 PARTS, BY WEIGHT, BASED ON THE WEIGHT OF THE RESIN COMPONENT, OF A FLAME RETARDANT SELECTED FROM THE GROUP CONSISTING OF ALUMIUM OXIDE AND ANTIMONY OXIDE; AND (D) FROM 0.25 TO 2.0 PARTS, BY WEIGHT, BASED ON THE WEIGHT OF THE RESIN COMPONENT, OF A PHOSPHATE CHLEATING AGENT.
Claim 3
Dependent Claim
20 words
A sheet, according to claim 1, wherein the chlorinated polyethylene contains from 30 to 75 percent, by weight, of chlorine.
Claim 4
Dependent Claim
18 words
A sheet, according to claim 1, wherein the polyvinylchloride has a molecular weight of between 5,000 and 25,000.
Claim 5
Dependent Claim
18 words
A sheet, according to claim 3, wherein the polyvinylchloride has a molecular weight of between 5,000 and 15,000.
Claim 6
Dependent Claim
14 words
A sheet, according to claim 1, wherein the epoxy stabilizer is epoxidized peanut oil.
Claim 7
Dependent Claim
23 words
A sheet, according to claim 1, wherein the phosphate chelating agent is selected from the group consisting of alkyl phosphate and aryl phosphate.
Claim 8
Dependent Claim
18 words
A sheet, according to claim 1, which contains carbon black, as an ultraviolet light absorber, and a lubricant.
Claim 9
Dependent Claim
34 words
A sheet, according to claim 7, wherein the lubricant is calcium sterate which is present in the amount of from 1 to 10 parts, by weight, based on the amount of thermoplastic resin component.
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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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |