Patent US3010049A successfully refreshed from Google Patents.
Patent US2641614A successfully refreshed from Google Patents.
US2641614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condensation products of styrene
Assignee: —
•
Filing: —
•
Granted: 1953-06-09
•
Expires: 1970-06-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:14
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/02; C08F; C08F283/00; C08F283/06; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08G; C08G2650/00; C08G2650/28; C08G2650/58; C08L2205/00; C08L2205/05; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/14; C08L2666/22; C10; C10N; C10N2020/00; C10N2020/01
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
77 words
A POLYMERIC COMPOSITION COMPRISING A MIXTURE OF INTERPOLYMERS OF STYRENE OXIDE AND AT LEAST ONE ALKYLENE OXIDE CONTAINING FROM 2 TO 4 CARBON ATOMS IN THE MOLECULE, WHICH MIXTURE OF INTERPOLYMERS HAS AN AVERAGE MOLECULAR WEIGHT OF AT LEAST 300, AND IN WHICH MIXTURE OF INTERPOLYMERS THE STYRENE OXIDE AND THE ALKYLENE OXIDE ARE CHEMICALLY COMBINED IN AMOUNTS CORRESPONDING FROM 0.1 TO 9 MOLECULAR PROPORTIONS OF THE STYRENE OXIDE PER MOLECULAR EQUIVALENT PROPORTION OF THE ALKYLENE OXIDE.
Claim 2
Dependent Claim
77 words
A POLYMERIC COMPOSITION COMPRISING A MIXTURE OF INTERPOLYMERS OF STYRENE OXIDE AND AT LEAST ONE ALKYLENE OXIDE CONTAINING FROM 2 TO 4 CARBON ATOMS IN THE MOLECULE, WHICH MIXTURE OF INTERPOLYMERS HAS AN AVERAGE MOLECULAR WEIGHT OF AT LEAST 300, AND IN WHICH MIXTURE OF INTERPOLYMERS THE STYRENE OXIDE AND THE ALKYLENE OXIDE ARE CHEMICALLY COMBINED IN AMOUNTS CORRESPONDING FROM 0.1 TO 9 MOLECULAR PROPORTIONS OF THE STYRENE OXIDE PER MOLECULAR EQUIVALENT PROPORTION OF THE ALKYLENE OXIDE.
Claim 3
Independent Claim
116 words
A METHOD OF MAKING A POLYMERIC COMPOSITION CONSISTING OF A MIXTURE OF POLYGLYCOLS HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST 300, WHICH COMPRISES INTERPOLYMERIZING A MIXTURE CONSISTING OF STYRENE OXIDE AND AT LEAST ONE ALKYLENE OXIDE CONTAINING FROM 2 TO 4 CARBON ATOMS IN THE MOLECULE, IN AMOUNTS CORRESPONDING TO FROM 0.1 TO 9 MOLECULAR PROPORTION OF THE STYRENE OXIDE PER MOLECULAR EQUIVALENT PROPORTION OF THE ALKYLENE OXIDE, BY HEATING THE OXIDE REACTANTS IN LIQUID PHASE WHILE IN ADMIXTURE WITH FROM 1 TO 10 PER CENT BY WEIGHT OF A GLYCOL AND FROM 0.1 TO 0.5 PER CENT OF AN ALKALI METAL HYDROXIDE TO A REACTION TEMPERATURE BETWEEN 80* AND 200* C. AT SUPERATMOSPHERIC PRESSURE.
Claim 4
Independent Claim
116 words
A METHOD OF MAKING A POLYMERIC COMPOSITION CONSISTING OF A MIXTURE OF POLYGLYCOLS HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST 300, WHICH COMPRISES INTERPOLYMERIZING A MIXTURE CONSISTING OF STYRENE OXIDE AND AT LEAST ONE ALKYLENE OXIDE CONTAINING FROM 2 TO 4 CARBON ATOMS IN THE MOLECULE, IN AMOUNTS CORRESPONDING TO FROM 0.1 TO 9 MOLECULAR PROPORTION OF THE STYRENE OXIDE PER MOLECULAR EQUIVALENT PROPORTION OF THE ALKYLENE OXIDE, BY HEATING THE OXIDE REACTANTS IN LIQUID PHASE WHILE IN ADMIXTURE WITH FROM 1 TO 10 PER CENT BY WEIGHT OF A GLYCOL AND FROM 0.1 TO 0.5 PER CENT OF AN ALKALI METAL HYDROXIDE TO A REACTION TEMPERATURE BETWEEN 80* AND 200* C. AT SUPERATMOSPHERIC PRESSURE.
References Cited (Backward Citations)
US2372615A
Cited
US2425845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |