Patent US3138573A successfully refreshed from Google Patents.
US3138573A
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Elastomeric polymer and process for making the same
Assignee: Coast Pro-Seal and Manufacturing Co
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Filing: 1960-05-23
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Granted: 1964-06-23
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Expires: 1980-05-23
Abstract
No abstract record available.
Inventors
- 👤 Fave Gene M Le
- 👤 Frank Y Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:04
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/20; C08G75/02; C08G75/04; C08G75/045; Y; Y10; Y10S; Y10S528/00; Y10S528/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
AN ELASTOMERIC POLYMER COMPRISING THE REACTION PRODUCT OF AN ACCEPTOR AND A DONOR REACTED IN A RATIO OF 0.85 TO 1.15 EQUIVALENTS OF ACCEPTOR TO ONE EQUIVALENT OF DONOR, SAID ACCEPTOR COMRPISING A SULFONE DIEYLENIC COMPOUND WHEREIN THE ETHYLENIC UNSATURATION IS ADJACENT TO A SULFONYL GROUP, AND SAID DONOR COMPRISING A LIQUID POLYMER TERMINATED WTIH THIOL GROUPS AND HAVING AT LEAST ONE INTERMEDIATE THIOL GROUP PROVIDIG A CROSS-LINKING SITE, THE REPEATING UNITS OF SAID POLYMER COMPRISING ALKYLENE GROUPS OF 1 TO 6 CARBON ATOMS, SAID INTERMEDIATE THIOL GROUP BEING ATTACHED TO AN ALKYLENE GROUP, SAID ALKYLENE GROUPS BEING CONNECTED BY A LINKAGE SELECTED FROM THE GROUP CONSISTING OF SULFIDE, POLYSULFIDE, OXIDE, ESTER AND URETHANE LINKAGES, SAID DONOR HAVING A MOLECULAR WEIGHT OF FROM ABOUT 500 TO 8,000 AND HAVING AN AVERAGE THIOL FUNCTIONALITY RANGING FROM GREATER THANB 2 TO 4.
Claim 2
Dependent Claim
140 words
AN ELASTOMERIC POLYMER COMPRISING THE REACTION PRODUCT OF AN ACCEPTOR AND A DONOR REACTED IN A RATIO OF 0.85 TO 1.15 EQUIVALENTS OF ACCEPTOR TO ONE EQUIVALENT OF DONOR, SAID ACCEPTOR COMRPISING A SULFONE DIEYLENIC COMPOUND WHEREIN THE ETHYLENIC UNSATURATION IS ADJACENT TO A SULFONYL GROUP, AND SAID DONOR COMPRISING A LIQUID POLYMER TERMINATED WTIH THIOL GROUPS AND HAVING AT LEAST ONE INTERMEDIATE THIOL GROUP PROVIDIG A CROSS-LINKING SITE, THE REPEATING UNITS OF SAID POLYMER COMPRISING ALKYLENE GROUPS OF 1 TO 6 CARBON ATOMS, SAID INTERMEDIATE THIOL GROUP BEING ATTACHED TO AN ALKYLENE GROUP, SAID ALKYLENE GROUPS BEING CONNECTED BY A LINKAGE SELECTED FROM THE GROUP CONSISTING OF SULFIDE, POLYSULFIDE, OXIDE, ESTER AND URETHANE LINKAGES, SAID DONOR HAVING A MOLECULAR WEIGHT OF FROM ABOUT 500 TO 8,000 AND HAVING AN AVERAGE THIOL FUNCTIONALITY RANGING FROM GREATER THANB 2 TO 4.
References Cited (Backward Citations)
US2466963A
Cited
US2505366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |