US3219609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous dispersions of vinyl chloride-acrylic ester copolymers
Assignee: Kuhlmann SA
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Filing: 1961-02-24
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Granted: 1965-11-23
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Expires: 1981-02-24
Abstract
No abstract record available.
Inventors
- 👤 Perronin Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:34
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F214/00; C08F214/02; C08F214/04; C08F214/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
PROCESS FOR THE PREPARATION OF AQUEOUS DISPERSIONS OF VINYL CHLORIDE/ACRYLIC ESTER COPOLYMERS WHICH COMPRISES COPOLYMERISING THE VINYL CHLORIDE AND ACRYLIC ESTER FREE FROM ACID GROUP IN THE PRESENCE OF WATER AND A MIXTURE OF SURFACE-ACTIVE AGENTS CONSISTING OF (1) A MEMBER SELECTED FROM THE GROUP CONSISTING OF AMMONIUM LAURYL SULPHATE, SODIUM LAURYL SULFATE, SODIUM ALKYL SULPHONATES, SODIUM DIALKYL SULPHO-SUCCINATES AND SODIUM ALKYLARYL-SULPHONATES AND (2) A CONDENSATE OF ETHYLENE OXIDE WITH A FATTY ALCOHOL, THE CATALYST IN THE POLYMERISATION BEING A REDOX SYSTEM AND THE AMOUNT OF THE MIXTURE OF SURFACE-ACTIVE AGENTS BEING FROM 3% TO 15% BASED ON THE WEIGHT OF THE MONOMERS.
Claim 2
Dependent Claim
103 words
PROCESS FOR THE PREPARATION OF AQUEOUS DISPERSIONS OF VINYL CHLORIDE/ACRYLIC ESTER COPOLYMERS WHICH COMPRISES COPOLYMERISING THE VINYL CHLORIDE AND ACRYLIC ESTER FREE FROM ACID GROUP IN THE PRESENCE OF WATER AND A MIXTURE OF SURFACE-ACTIVE AGENTS CONSISTING OF (1) A MEMBER SELECTED FROM THE GROUP CONSISTING OF AMMONIUM LAURYL SULPHATE, SODIUM LAURYL SULFATE, SODIUM ALKYL SULPHONATES, SODIUM DIALKYL SULPHO-SUCCINATES AND SODIUM ALKYLARYL-SULPHONATES AND (2) A CONDENSATE OF ETHYLENE OXIDE WITH A FATTY ALCOHOL, THE CATALYST IN THE POLYMERISATION BEING A REDOX SYSTEM AND THE AMOUNT OF THE MIXTURE OF SURFACE-ACTIVE AGENTS BEING FROM 3% TO 15% BASED ON THE WEIGHT OF THE MONOMERS.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |