US3373122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamed polyurethanes
Assignee: Midland Silicones Ltd
•
Filing: 1964-01-27
•
Granted: 1968-03-12
•
Expires: 1984-01-27
Abstract
No abstract record available.
Inventors
- 👤 Maurice Richard Porter
- 👤 Basil Longden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:08
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0023; C08J9/0095; C08K; C08K5/00; C08K5/04; C08K5/09; C08L; C08L75/00; C08L75/04; C08L83/00; C08L83/10; C08L83/12; C08J2375/00; C08J2375/04; C08J2375/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
81 words
A COMPOSITION FOR USE IN THE PRODUCTION OF FOAMED POLYURETHANES BASED ON REACTION PRODUCTS OF A POLYHYDRIC POLYETHER AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYISOCYANATES AND POLYISOTHIOCYANATES CONSISTING ESSENTIALLY OF A MIXTURE OF (A) COPOLYMER SELECTED FROM THE GROUP CONSISTING OF POLYSILOXANE-POLYOXYALKYLENE COPOLYMERS AND POLYSILOXANE-POLYALKYLENEOXY COPOLYMERS AND (B) 0.1 TO 10.0% BY WEIGHT BASED ON THE WEIGHT OF COPOLYMER (A) OF AN ADDITIVE WHICH IS AN ANHYDRIDE OF AN ALIPHATIC CARBOXYLIC ACID AND CONTAINS FROM 1-20 CARBON ATOMS.
Claim 2
Dependent Claim
81 words
A COMPOSITION FOR USE IN THE PRODUCTION OF FOAMED POLYURETHANES BASED ON REACTION PRODUCTS OF A POLYHYDRIC POLYETHER AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYISOCYANATES AND POLYISOTHIOCYANATES CONSISTING ESSENTIALLY OF A MIXTURE OF (A) COPOLYMER SELECTED FROM THE GROUP CONSISTING OF POLYSILOXANE-POLYOXYALKYLENE COPOLYMERS AND POLYSILOXANE-POLYALKYLENEOXY COPOLYMERS AND (B) 0.1 TO 10.0% BY WEIGHT BASED ON THE WEIGHT OF COPOLYMER (A) OF AN ADDITIVE WHICH IS AN ANHYDRIDE OF AN ALIPHATIC CARBOXYLIC ACID AND CONTAINS FROM 1-20 CARBON ATOMS.
Claim 3
Dependent Claim
82 words
A PROCESS FOR THE PREPARTION OF FOAMED POLYURETHANES WHICH COMPRISES REACTING A POLYHYDRIC POLYETHER, A COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYISOCYANATES AND POLYISOTHIOCYANATES, COPOLYMER SELECTED FROM THE GROUP CONSISTING OF POLYSILOXANE-POLYOXYALKYLENE COPOLYMERS AND POLYSILOXANE-POLYALKYLENEOXY COPOLYMERS AND A FOAMING AGENT IN THE PRESENCE OF A CATALYST AND 0.1 TO 10.0% BY WEIGHT BASED ON THE WEIGHT OF COPOLYMER (A) OF AN ADDITIVE SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC CARBOXYLIC ACIDS AND ANHYDRIDES THEREOF, AND THEREAFTER ALLOWING THE MIXTURE TO FOAM.
Claim 4
Dependent Claim
82 words
A PROCESS FOR THE PREPARTION OF FOAMED POLYURETHANES WHICH COMPRISES REACTING A POLYHYDRIC POLYETHER, A COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYISOCYANATES AND POLYISOTHIOCYANATES, COPOLYMER SELECTED FROM THE GROUP CONSISTING OF POLYSILOXANE-POLYOXYALKYLENE COPOLYMERS AND POLYSILOXANE-POLYALKYLENEOXY COPOLYMERS AND A FOAMING AGENT IN THE PRESENCE OF A CATALYST AND 0.1 TO 10.0% BY WEIGHT BASED ON THE WEIGHT OF COPOLYMER (A) OF AN ADDITIVE SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC CARBOXYLIC ACIDS AND ANHYDRIDES THEREOF, AND THEREAFTER ALLOWING THE MIXTURE TO FOAM.
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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) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |