Patent US3332918A successfully refreshed from Google Patents.
US3332918A
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Vinyl chloride seed technique polymerization using emulsifying systems comprising two ammonium salts of different sulphocarboxylic acid esters
Assignee: Edison SpA
•
Filing: 1963-12-12
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Granted: 1967-07-25
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Expires: 1983-12-12
Abstract
No abstract record available.
Inventors
- 👤 Benetta Gianni
- 👤 Gatta Giorgio
- 👤 Testa Francesco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:19
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06; C08F259/00; C08F259/02; C08F259/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A PROCESS FOR AQUEOUS EMULSION POLYMERIZATION BY THE SEEDING TECHNIQUE COMPRISING POLYMERIZING A MONOMERIC COMPONENT SELECTED FROM THE GROUP OF VINYL CHLORIDE AND MIXTURES OF VINYL CHLORIDE WITH OTHER VINYL MONOMERS COPOLYMERIZABLE THEREWITH SELECTED FROM THE GROUP CONSISTING OF VINYL FLUORIDE, VINYLIDENE FLUORIDE, VINYLIDENE CHLORIDE, VINYL ACETATE, ACRYLIC ACID AND ACRYLONITRILE TO PRODUCE POLYMERS CONTAINING AT LEAST 75% POLYMERIZED VINYL CHLORDIE, CONTINUOUSLY ADDING TO THE AQUEOUS EMULSION FOR A PERIOD EXTENDING OVER AT LEAST THE GREATER PART OF THE PERIOD OF POLYMERIZATION AN EFFECTIVE AMOUNT OF AN EMULSIFYNG SYSTEM CONSISTING OF A MIXTURE OF TWO AMMONIUM SALTS OF DIFFERENT SULFOCARBOXYLIC ACID ESTERS, ONE OF SAID SALTS HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
110 words
A PROCESS FOR AQUEOUS EMULSION POLYMERIZATION BY THE SEEDING TECHNIQUE COMPRISING POLYMERIZING A MONOMERIC COMPONENT SELECTED FROM THE GROUP OF VINYL CHLORIDE AND MIXTURES OF VINYL CHLORIDE WITH OTHER VINYL MONOMERS COPOLYMERIZABLE THEREWITH SELECTED FROM THE GROUP CONSISTING OF VINYL FLUORIDE, VINYLIDENE FLUORIDE, VINYLIDENE CHLORIDE, VINYL ACETATE, ACRYLIC ACID AND ACRYLONITRILE TO PRODUCE POLYMERS CONTAINING AT LEAST 75% POLYMERIZED VINYL CHLORDIE, CONTINUOUSLY ADDING TO THE AQUEOUS EMULSION FOR A PERIOD EXTENDING OVER AT LEAST THE GREATER PART OF THE PERIOD OF POLYMERIZATION AN EFFECTIVE AMOUNT OF AN EMULSIFYNG SYSTEM CONSISTING OF A MIXTURE OF TWO AMMONIUM SALTS OF DIFFERENT SULFOCARBOXYLIC ACID ESTERS, ONE OF SAID SALTS HAVING THE GENERAL FORMULA:
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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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |