US3297613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinylidene chloride-acrylate-amide interpolymer
Assignee: Dow Chemical Co
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Filing: 1963-02-04
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Granted: 1967-01-10
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Expires: 1983-02-04
Abstract
No abstract record available.
Inventors
- 👤 Dale S Gibbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:32
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/02; C08F214/04; C08F214/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A PROCESS FOR MAKING A SOLID, FREE-FLOWING VINYLIDENE CHLORIDE INTERPOLYMER WHICH IS EASILY REDISPERSED IN WATER TO A LATEX FORM IN THE ABSENCE OF WETTING AGENTS, WHICH PROCESS CONSISTS OF: (I) SIMULTANEOUSLY AND CONTINUOUSLY ADDING AND POLYMERIZING, IN AN AQUEOUS MEDIUM CONTAINING CATALYTIC AMOUNTS OF A SUBSTANTIALLY NON-IONIC FREE-RADICAL CATALYST, (1) AT LEAST ABOUT 50 WEIGHT PERCENT VINYLIDENE CHLORIDE, (E) BETWEEN ABOUT 1 AND 45 WEIGHT PERCENT OF AT LEAST ONE SUBSTANTIALLY WATER-INSOLUBLE MONOETHYLENICALLY UNSATURATED COMONOMER, SELECTED FROM THE GROUP CONSISTING OF ALKYL ACRYLATES AND ALKYL ALKANOATES HAVING ALKYL GROUPS CONTAINING FROM 1 TO ABOUT 8 CARBON ATOMS AND (3) BETWEEN ABOUT 3 AND 25 WEIGHT PERCENT OF A SUBSTANTIALLY WATER-INSOLUBLE POLYMERIZABLE ETHYLENICALLY UNSATURATED CARBOXYLIC ACID AMIDE, THE TOTAL WEIGHT OF THE POLYMERIZABLE CONSTITUENTS BEING 100 PERCENT, AND (II) SEPARATING SAID INTERPOLYMER FROM SAID AQUEOUS MEDIUM.
Claim 2
Dependent Claim
136 words
A PROCESS FOR MAKING A SOLID, FREE-FLOWING VINYLIDENE CHLORIDE INTERPOLYMER WHICH IS EASILY REDISPERSED IN WATER TO A LATEX FORM IN THE ABSENCE OF WETTING AGENTS, WHICH PROCESS CONSISTS OF: (I) SIMULTANEOUSLY AND CONTINUOUSLY ADDING AND POLYMERIZING, IN AN AQUEOUS MEDIUM CONTAINING CATALYTIC AMOUNTS OF A SUBSTANTIALLY NON-IONIC FREE-RADICAL CATALYST, (1) AT LEAST ABOUT 50 WEIGHT PERCENT VINYLIDENE CHLORIDE, (E) BETWEEN ABOUT 1 AND 45 WEIGHT PERCENT OF AT LEAST ONE SUBSTANTIALLY WATER-INSOLUBLE MONOETHYLENICALLY UNSATURATED COMONOMER, SELECTED FROM THE GROUP CONSISTING OF ALKYL ACRYLATES AND ALKYL ALKANOATES HAVING ALKYL GROUPS CONTAINING FROM 1 TO ABOUT 8 CARBON ATOMS AND (3) BETWEEN ABOUT 3 AND 25 WEIGHT PERCENT OF A SUBSTANTIALLY WATER-INSOLUBLE POLYMERIZABLE ETHYLENICALLY UNSATURATED CARBOXYLIC ACID AMIDE, THE TOTAL WEIGHT OF THE POLYMERIZABLE CONSTITUENTS BEING 100 PERCENT, AND (II) SEPARATING SAID INTERPOLYMER FROM SAID AQUEOUS MEDIUM.
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |