US2882259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Segmented polymers having a linear polymeric backbone with linear polymer branches attached thereto through ureido groups and process for preparing the same
Assignee: Rohm and Haas Co
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Filing: 1955-12-27
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Granted: 1959-04-14
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Expires: 1975-12-27
Abstract
No abstract record available.
Inventors
- 👤 Roger K Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:46
CPC Classifications
C; C08; C08L; C08L29/00; C08L29/10; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/70; C08G18/72; C08G18/728; C08G81/00; C08G81/02; C08G81/021; C08L33/00; C08L33/04; C08L33/06; C08L57/00; C08L57/06; C08L57/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PROCESS FOR PREPARING SEGMENTED COPOLYMERS WHICH COMPRISES BRINGING TOGETHER AND REACTING IN AN ORGANIC SOLVENT THEREFOR BETWEEN ABOUT-20*C. AND ABOUT 150*C. (1) AN ORGANIC SOLVENT-SOLUBLE COPOLYMER OF A MONOVINYLIDENE COMPOUND AND A DIFFERENT POLYMERIZABLE MONOVINYLIDENE COMPOUND, SAID COPOLYMER CARRYING A PLURALITY OF ISOCYANATO GROUPS ON THE COPOLYMER MOLECULE AND (2) AN OARAGANIC SOLVENT-SOLUBLE POLYMER OF A MONOVINYLIDENE COMPOUND, SAID POLYMER HAVING POLYMERIC MOLECULES EACH IF WHICH IS TERIMINATE BY ONE BASIC -NH2 AMINO GROUP, THE RATIO OF -NH2 GROUPS TO ISOCYANATO GROUPS BEING FROM ABOUAT 1:1 TO ABOUT 1:2.
Claim 2
Dependent Claim
90 words
A PROCESS FOR PREPARING SEGMENTED COPOLYMERS WHICH COMPRISES BRINGING TOGETHER AND REACTING IN AN ORGANIC SOLVENT THEREFOR BETWEEN ABOUT-20*C. AND ABOUT 150*C. (1) AN ORGANIC SOLVENT-SOLUBLE COPOLYMER OF A MONOVINYLIDENE COMPOUND AND A DIFFERENT POLYMERIZABLE MONOVINYLIDENE COMPOUND, SAID COPOLYMER CARRYING A PLURALITY OF ISOCYANATO GROUPS ON THE COPOLYMER MOLECULE AND (2) AN OARAGANIC SOLVENT-SOLUBLE POLYMER OF A MONOVINYLIDENE COMPOUND, SAID POLYMER HAVING POLYMERIC MOLECULES EACH IF WHICH IS TERIMINATE BY ONE BASIC -NH2 AMINO GROUP, THE RATIO OF -NH2 GROUPS TO ISOCYANATO GROUPS BEING FROM ABOUAT 1:1 TO ABOUT 1:2.
References Cited (Backward Citations)
US2647884A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |