US2851436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making dhsocyanate-modified polyester with polymerized vinyl halide
Assignee: Armstrong World Industries Inc
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Filing: 1955-09-26
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Granted: 1958-09-09
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Expires: 1975-09-26
Abstract
No abstract record available.
Inventors
- 👤 Alan K Forsythe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:24
CPC Classifications
C; C08; C08L; C08L75/00; C08L75/04; C08L75/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
THE METHOD OF MAKING A VULCANIZABLE COMPOSITION OF MATTER WHICH COMPRISES DISSOLVING ABOUT 30%-70% BY WEIGHT OF SAID COMPOSITION OF DIISOCYANATE-MODIFIED POLYESTER AND ABOUT 70%-30% BY WEIGHT OF SAID COMPOSITION OF POLYMERIZED VINYL CHLORIDE IN SOLVENT, WHICH SOLVENT IS AT LEAST PARTIALLY WATER-SOLUBLE, AND ADDING WATER TO SO-FORMED SOLUTION TO PRECIPITATE SAID COMPOSITION, SAID MODIFIED POLYESTER BEING THE REACTION PRODUCT OF -0.6-0.9 EQUIVALENTS OF ORAGNIC DIISOCYANATE PER EQUIVALENT OF UNMODIFIED POLYESTER SUFFICIENT TO FORM AN INCIPIENT GEL, SAID UNMODIFIED POLYESTER HAVING AN ACID NUMBER IN THE RANGE OF ABOUT 20-25 AND BEING FORMED FROM A SATIN THE RANGE OF ABOUT 20-55 AND BEING FORMED FROM A SATURATED GLYCOL HAVING 4 CARBON ATOMS, A SATURATED DICARBOXYLIC ACID HAVING 6-10 CARBON ATOMS, AND A DICARBOXYLIC ACID POSSESSING A SINGLE UNSATURATED BOND AND HAVING NO MORE THAN 8 CARBON ATOMS, SAID SATURATED ACID AND SAID UNSATURATED ACID BEING PRESENT IN A MOLE RATIO OF ABOUT 2:1
Claim 2
Independent Claim
153 words
THE METHOD OF MAKING A VULCANIZABLE COMPOSITION OF MATTER WHICH COMPRISES DISSOLVING ABOUT 30%-70% BY WEIGHT OF SAID COMPOSITION OF DIISOCYANATE-MODIFIED POLYESTER AND ABOUT 70%-30% BY WEIGHT OF SAID COMPOSITION OF POLYMERIZED VINYL CHLORIDE IN SOLVENT, WHICH SOLVENT IS AT LEAST PARTIALLY WATER-SOLUBLE, AND ADDING WATER TO SO-FORMED SOLUTION TO PRECIPITATE SAID COMPOSITION, SAID MODIFIED POLYESTER BEING THE REACTION PRODUCT OF -0.6-0.9 EQUIVALENTS OF ORAGNIC DIISOCYANATE PER EQUIVALENT OF UNMODIFIED POLYESTER SUFFICIENT TO FORM AN INCIPIENT GEL, SAID UNMODIFIED POLYESTER HAVING AN ACID NUMBER IN THE RANGE OF ABOUT 20-25 AND BEING FORMED FROM A SATIN THE RANGE OF ABOUT 20-55 AND BEING FORMED FROM A SATURATED GLYCOL HAVING 4 CARBON ATOMS, A SATURATED DICARBOXYLIC ACID HAVING 6-10 CARBON ATOMS, AND A DICARBOXYLIC ACID POSSESSING A SINGLE UNSATURATED BOND AND HAVING NO MORE THAN 8 CARBON ATOMS, SAID SATURATED ACID AND SAID UNSATURATED ACID BEING PRESENT IN A MOLE RATIO OF ABOUT 2:1
References Cited (Backward Citations)
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US2491923A
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GB638118A
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US2606162A
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US2698838A
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US2777831A
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US2725366A
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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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |