US3113116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a foamed plastisol containing a small amount of water
Assignee: Union Carbide Corp
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Filing: 1957-03-06
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Granted: 1963-12-03
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Expires: 1977-03-06
Abstract
No abstract record available.
Inventors
- 👤 William J Smythe
- 👤 Egon M Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:14
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/30; Y; Y10; Y10S; Y10S264/00; Y10S264/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
THE METHOD OF FORMING RESILIENT SPONGY FOAMS FROM PLASTISOL COMPOSITIONS IN LIQUID FORM OF POLYMERIZED MATERIAL IN PARTICULATE FORM SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE AND COPOLYMERS OF VINYL CHLORIDE AND VINYL ACETATE SUSPENDED IN A PLASTICIZER THEREFOR, WHICH FOAMS ARE CHARACTERIZED BY THE UNIFORMITY OF THEIR CELLULAR STRUCTURE WHICH COMPRISES, AS A FIRST PREPARATORY STEP, ADJUSTING THE PLASTISOL TO A WATER CONTENT IN THE RANGE FROM ABOUT 0.1 PERCENT TO ABOUT 0.5 PERCENT BY WEIGHT OF THE ENTIRE COMPOSITION, SAID AMOUNT OF WATER BEING INSUFFICIENT TO SERVE AS A BLOWING AGENT TO FORM SPONGE, FOAMING A FOAM FROM SAID PLASTISOL, MAINTAINING THE WATER CONTENT OF SAID PLASTISOL IN THAT RANGE DURING THE FORMATION OF THE WET FOAM, AND MAINTAINING THE HUMIDITY OF THE SURROUNDING ATMOSPHERE IN WHICH THE FOAM IS GENERATED BELOW ABOUT 50 GRAINS OF WATER PER POUND OF AIR, DISCHARGING THE PLASTISOL FOAM INTO AN ATMOSPHERE HAVING A DEWPOINT BELOW THE TEMPERATURE OF THE FOAMED PLASTISOL AND CURING THE FOAM BY HEATING TO GIVE IT PERMANENT POROUS FORM.
Claim 2
Independent Claim
173 words
THE METHOD OF FORMING RESILIENT SPONGY FOAMS FROM PLASTISOL COMPOSITIONS IN LIQUID FORM OF POLYMERIZED MATERIAL IN PARTICULATE FORM SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE AND COPOLYMERS OF VINYL CHLORIDE AND VINYL ACETATE SUSPENDED IN A PLASTICIZER THEREFOR, WHICH FOAMS ARE CHARACTERIZED BY THE UNIFORMITY OF THEIR CELLULAR STRUCTURE WHICH COMPRISES, AS A FIRST PREPARATORY STEP, ADJUSTING THE PLASTISOL TO A WATER CONTENT IN THE RANGE FROM ABOUT 0.1 PERCENT TO ABOUT 0.5 PERCENT BY WEIGHT OF THE ENTIRE COMPOSITION, SAID AMOUNT OF WATER BEING INSUFFICIENT TO SERVE AS A BLOWING AGENT TO FORM SPONGE, FOAMING A FOAM FROM SAID PLASTISOL, MAINTAINING THE WATER CONTENT OF SAID PLASTISOL IN THAT RANGE DURING THE FORMATION OF THE WET FOAM, AND MAINTAINING THE HUMIDITY OF THE SURROUNDING ATMOSPHERE IN WHICH THE FOAM IS GENERATED BELOW ABOUT 50 GRAINS OF WATER PER POUND OF AIR, DISCHARGING THE PLASTISOL FOAM INTO AN ATMOSPHERE HAVING A DEWPOINT BELOW THE TEMPERATURE OF THE FOAMED PLASTISOL AND CURING THE FOAM BY HEATING TO GIVE IT PERMANENT POROUS FORM.
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) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |