US3368985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethanes produced from hydroxyl-terminated carbamates
Assignee: PPG Industries Inc
•
Filing: 1965-03-19
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Granted: 1968-02-13
•
Expires: 1985-03-19
Abstract
No abstract record available.
Inventors
- 👤 Wismer Marco
- 👤 James F Foote
- 👤 Paul R Mosso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:51
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3271; C08G18/38; C08G18/3819; C08G18/3823; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5036
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
20 words
A POLYURETHANE RESIN PREPARED FROM REACTANTS CONSISTING ESSENTIALLY OF: (A) AN ORGANIC POLYISOCYANATE, AND (B) A CARBAMATE OF THE STRUCTURE
Claim 2
Dependent Claim
20 words
A POLYURETHANE RESIN PREPARED FROM REACTANTS CONSISTING ESSENTIALLY OF: (A) AN ORGANIC POLYISOCYANATE, AND (B) A CARBAMATE OF THE STRUCTURE
Claim 3
Dependent Claim
106 words
A CELLULAR POLYURETHANE RESIN PREPARED FROM REACTANTS CONSISTING ESSENTIALLY OF: (A) AN ORGANIC POLYISOCYANATE, AND (B) A CARBAMATE OF THE STRUCTURE R''-N(-R")-C(=X)-O-R-N(-(R-O)A-H)-(R-O)B-H WHEREIN X IS SELECTED FROM THE CLASS CONSISTING OF OXYGEN AND SULFUR, EACH R IS A 1, 2-ALKYLENE RADICAL CONTAINING FROM 2 TO 10 CARBON ATOMS, R'' AND R" ARE SELECTED FROM THE CLASS CONSISITNGING OF HYDRROGEN ATOMS, ALKYL RADICALS, ARYL RADICALS, ALKYLPHENYL RADICALS, AND -(R-O)C-H GROUPS, WHERE R, R'' AND R" MAY BE THE SAME OR DIFFERENT, AND A, B, AND C REPRESENT A NUMBER FROM 0 TO 10 AND A+B+C IS FROM 1 TO 10, IN THE PRESENCE OF A BLOWING AGENT.
Claim 4
Dependent Claim
106 words
A CELLULAR POLYURETHANE RESIN PREPARED FROM REACTANTS CONSISTING ESSENTIALLY OF: (A) AN ORGANIC POLYISOCYANATE, AND (B) A CARBAMATE OF THE STRUCTURE R''-N(-R")-C(=X)-O-R-N(-(R-O)A-H)-(R-O)B-H WHEREIN X IS SELECTED FROM THE CLASS CONSISTING OF OXYGEN AND SULFUR, EACH R IS A 1, 2-ALKYLENE RADICAL CONTAINING FROM 2 TO 10 CARBON ATOMS, R'' AND R" ARE SELECTED FROM THE CLASS CONSISITNGING OF HYDRROGEN ATOMS, ALKYL RADICALS, ARYL RADICALS, ALKYLPHENYL RADICALS, AND -(R-O)C-H GROUPS, WHERE R, R'' AND R" MAY BE THE SAME OR DIFFERENT, AND A, B, AND C REPRESENT A NUMBER FROM 0 TO 10 AND A+B+C IS FROM 1 TO 10, IN THE PRESENCE OF A BLOWING AGENT.
References Cited (Backward Citations)
US3038008A
Cited
US2091106A
Cited
US2123718A
Cited
US2352552A
Cited
GB804300A
Cited
GB861045A
Cited
DE1160173B
Cited
US3277027A
Cited
GB981687A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |