Patent US3245939A successfully refreshed from Google Patents.
US3245939A
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Process for the preparation of cationactive polymer dispersions
Assignee: Wacker Chemie AG
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Filing: 1963-11-19
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Granted: 1966-04-12
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Expires: 1983-11-19
Abstract
No abstract record available.
Inventors
- 👤 Bergmeister Eduard
- 👤 Heckmaier Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:00
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/22; C08F2/24; C08F2/28; Y; Y10; Y10S; Y10S525/00; Y10S525/913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN THE PROCESS OF PREPARING A STABLE, CATION-ACTIVE POLYMER DISPERSION BY THE HEATING OF A MIXTURE OF A MONOMER SELECTED FROM THE GROUP CONSISTIG OF ETHYLENICALLY-UNSATURATED POLYMERIZABLE COMPOUNDS AND MIXTURES THEREOF AND WATER IN THE PRESENCE OF A FREE-RADICAL FORMING POLYMERIZATION CATALYST, A CATIONIC DISPERSION AGENT AND A PROTECTIVE COLLOID FOR A TIME SUFFICIENT TO EFFECT POLYMERIZATION, THE IMPROVEMENT WHICH COMPRISES UTILIZING, AS SAID PROTECTIVE COLLOID, AN AQUEOUS SOLUTION OF A WATER SOLUBLE SALT OF A POLYMER PREPARED FROM THE REACTION PRODUCT OF AN AMINE OF THE FORMULA
Claim 2
Dependent Claim
88 words
IN THE PROCESS OF PREPARING A STABLE, CATION-ACTIVE POLYMER DISPERSION BY THE HEATING OF A MIXTURE OF A MONOMER SELECTED FROM THE GROUP CONSISTIG OF ETHYLENICALLY-UNSATURATED POLYMERIZABLE COMPOUNDS AND MIXTURES THEREOF AND WATER IN THE PRESENCE OF A FREE-RADICAL FORMING POLYMERIZATION CATALYST, A CATIONIC DISPERSION AGENT AND A PROTECTIVE COLLOID FOR A TIME SUFFICIENT TO EFFECT POLYMERIZATION, THE IMPROVEMENT WHICH COMPRISES UTILIZING, AS SAID PROTECTIVE COLLOID, AN AQUEOUS SOLUTION OF A WATER SOLUBLE SALT OF A POLYMER PREPARED FROM THE REACTION PRODUCT OF AN AMINE OF THE FORMULA
References Cited (Backward Citations)
US2781335A
Cited
US2973285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |