US2689232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of cyclic diene compounds and ethylenically unsaturated compounds
Assignee: PPG Industries Inc
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Filing: 1951-08-11
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Granted: 1954-09-14
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Expires: 1971-08-11
Abstract
No abstract record available.
Inventors
- 👤 Howard L Gerhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:00
CPC Classifications
C; C08; C08F; C08F232/00; C08F232/08; C08F236/00; C08F236/02; C08F236/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
91 words
IN A METHOD OF FORMING A RESINOUS POLYMER WHICH IS SOLUBLE IN GLYCERIDE OIL, THE STEP OF HEATING AT A TEMPERATURE OF AT LEAST ABOUT 250* C., BUT BELOW THE TEMPERATURE OF CHARRING OF THE COMPONENTS OF THE SYSTEM, A MIXTURE CONSISTING OF (A) 1 MOLE OF A COMPOUND CONTAINING THE H2C=C$ GROUP AND BEING FREE OF CONJUGATE OLEFINIC GROUPS AND (B) AT LEAST TWO TIMES THE STOICHIOMETRIC PROPORTION WITH RESPECT TO COMPOUND (A) OF A COMPOUND OF THE CLASS CONSISTING OF CYCLOPENTADIENE AND A POLYMER OF CYCLOPENTADIENE OF THE FORMULA
Claim 2
Dependent Claim
91 words
IN A METHOD OF FORMING A RESINOUS POLYMER WHICH IS SOLUBLE IN GLYCERIDE OIL, THE STEP OF HEATING AT A TEMPERATURE OF AT LEAST ABOUT 250* C., BUT BELOW THE TEMPERATURE OF CHARRING OF THE COMPONENTS OF THE SYSTEM, A MIXTURE CONSISTING OF (A) 1 MOLE OF A COMPOUND CONTAINING THE H2C=C$ GROUP AND BEING FREE OF CONJUGATE OLEFINIC GROUPS AND (B) AT LEAST TWO TIMES THE STOICHIOMETRIC PROPORTION WITH RESPECT TO COMPOUND (A) OF A COMPOUND OF THE CLASS CONSISTING OF CYCLOPENTADIENE AND A POLYMER OF CYCLOPENTADIENE OF THE FORMULA
Claim 3
Dependent Claim
29 words
A METHOD OF FORMING A COATING COMPOSITION WHICH COMPRISES THE STEP OF DISSOLVING A DRYING OIL-SOLUBLE GUM FORMED BY THE METHOD OF CLAIM 1 IN A GLYCERIDE DRYING OIL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |