US3357933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graft polymerization of thioated hydroxy containing polymers with ethylenically unsaturated monomers
Assignee: Kimberly Clark Tissue Co
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Filing: 1966-12-07
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Granted: 1967-12-12
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Expires: 1986-12-07
Abstract
No abstract record available.
Inventors
- 👤 Robert W Faessinger
- 👤 John S Conte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:13
CPC Classifications
C; C08; C08F; C08F273/00; C08B; C08B15/00; C08F8/00; C08F8/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
THE PROCESS WHICH COMPRISES THE STEPS OF WETTING WITH AN ALKALINE SOLUTION A WATER-INSOLUBLE, SYNETHETIC, HYDROXYL GROUP-CONTAINING POLYMER OR A WATER-INSOLUBLE, SYNTHETIC POLYMER CONTAINING A GROUP HYDROLYZABLE TO A HYDROXYL GROUP; BRINGING THE ALKALINE-WET POLYMER IN INTIMATE CONTACT WITH CARBON DISULFIDE OR CARBONYL SULFIDE TO PRODUCE A WATER-INSOLUBLE THIOATED DERIVATIVE OF THE POLYMER; WASHING THE RESULTING THIOATED DERIVATIVE TO REMOVE THE WATER-SOLUBLE BY-PRODUCTS OF THE THIOATE FORMATION OR THIOATE SUBSTRATE DECOMPOSITION; AND REACTING THE RESULTING THIOATED DERIVATIVE, VIS FREE RADICAL INITIATION, WITH AT LEAST ONE ETHYLENICALLY UNSATURATED MONOMER.
Claim 2
Dependent Claim
88 words
THE PROCESS WHICH COMPRISES THE STEPS OF WETTING WITH AN ALKALINE SOLUTION A WATER-INSOLUBLE, SYNETHETIC, HYDROXYL GROUP-CONTAINING POLYMER OR A WATER-INSOLUBLE, SYNTHETIC POLYMER CONTAINING A GROUP HYDROLYZABLE TO A HYDROXYL GROUP; BRINGING THE ALKALINE-WET POLYMER IN INTIMATE CONTACT WITH CARBON DISULFIDE OR CARBONYL SULFIDE TO PRODUCE A WATER-INSOLUBLE THIOATED DERIVATIVE OF THE POLYMER; WASHING THE RESULTING THIOATED DERIVATIVE TO REMOVE THE WATER-SOLUBLE BY-PRODUCTS OF THE THIOATE FORMATION OR THIOATE SUBSTRATE DECOMPOSITION; AND REACTING THE RESULTING THIOATED DERIVATIVE, VIS FREE RADICAL INITIATION, WITH AT LEAST ONE ETHYLENICALLY UNSATURATED MONOMER.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |