US3537808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of depositing polymers on fibrous products
Assignee: Rohm and Haas Co
•
Filing: 1961-02-17
•
Granted: 1970-11-03
•
Expires: 1981-02-17
Abstract
No abstract record available.
Inventors
- 👤 John L Gardon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:22
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; D06M15/59; D06M17/00; D06M17/04; D06M17/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A PROCESS FOR MODIFYING A FIBROUS SUBSTRATE WHICH COMPRISES FORMING AN OIL-IN-WATER EMULSION, THE OIL PHASE OF WHICH CONTAINS A REACTANT A DISSOLVED IN A WATER-IMMISCIBLE NON-POLAR SOLVENT AND THE AQUEOUS PHASE OF WHICH CONTAINS A REACTANT B DISSOLVED THEREIN, APPLYING THE EMULSION AND AN ALKALINE CATALYST TO A FIBROUS SUBSTRATE AT A TEMPERATURE OF -10*C. TO +100*C. TO EFFECT REACTION BETWEEN THE REACTANTS THEREIN AND THE FORMATION OF A CONDENSATION POLYMER IN CONTACT WITH FIBERS OF THE SUBSTRATE, REACTANT A BEING SELECTED FROM THE GROUP CONSISTING OF DICARBOXYLIC ACID HALIDES, DISULFONIC ACID HALIDES, BISHALOFORMATES, AND BISCARBAMYL HALIDES AND REACTANT B BEING SELECTED FROM THE GROUP CONSISTING OF GUANIDINE, THIOUREA, DITHIOBIURET, DIAMINES, DIPHENOLATES, DITHIOLS, AMINOALKYLPHENOLATES, AND AMINOTHIOLS.
Claim 2
Dependent Claim
117 words
A PROCESS FOR MODIFYING A FIBROUS SUBSTRATE WHICH COMPRISES FORMING AN OIL-IN-WATER EMULSION, THE OIL PHASE OF WHICH CONTAINS A REACTANT A DISSOLVED IN A WATER-IMMISCIBLE NON-POLAR SOLVENT AND THE AQUEOUS PHASE OF WHICH CONTAINS A REACTANT B DISSOLVED THEREIN, APPLYING THE EMULSION AND AN ALKALINE CATALYST TO A FIBROUS SUBSTRATE AT A TEMPERATURE OF -10*C. TO +100*C. TO EFFECT REACTION BETWEEN THE REACTANTS THEREIN AND THE FORMATION OF A CONDENSATION POLYMER IN CONTACT WITH FIBERS OF THE SUBSTRATE, REACTANT A BEING SELECTED FROM THE GROUP CONSISTING OF DICARBOXYLIC ACID HALIDES, DISULFONIC ACID HALIDES, BISHALOFORMATES, AND BISCARBAMYL HALIDES AND REACTANT B BEING SELECTED FROM THE GROUP CONSISTING OF GUANIDINE, THIOUREA, DITHIOBIURET, DIAMINES, DIPHENOLATES, DITHIOLS, AMINOALKYLPHENOLATES, AND AMINOTHIOLS.
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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) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |