Patent US4011286A successfully refreshed from Google Patents.
US2966471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of polymer foam from polymerized alpha-chloroacrylic acid esters
Assignee: GAF Chemicals Corp
•
Filing: 1955-12-30
•
Granted: 1960-12-27
•
Expires: 1975-12-30
Abstract
No abstract record available.
Inventors
- 👤 Harry D Anspon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:52
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08J9/0014; C08J9/0023; C08J9/02; C08K; C08K5/00; C08K5/04; C08K5/05; C08K5/10; C08K5/11; C08L; C08L33/00; C08L33/04; C08L33/14; C08L33/16; C08L83/00; C08L83/04; C08L91/00; C08J2333/00; C08J2333/04; C08J2333/14; C08J2333/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A PROCESS FOR MAKING POLYMER FOAM WHICH COMPRISES DISSOLVING IN A MONOMERIC ALPHA-CHLOROACRYLIC ESTER OF A MONO-HYDROXY HYDROCARBON OF 1 TO 6 CARBON ATOMS, AN ORGANIC COMPOUND WHICH IS SOLUBLE IN SUCH MONOMER BUT SUFFICIENTLY INSOLUBLE IN THE CORRESPONDING POLYMER TO SEPARATE THEREFROM DURING POLYMERIZATION IN NON-CRYSTALLINE DISPERSED FORM AND WHICH IS SELECTED FROM THE GROUP CONSISTING OF OILY TO WAXY HYDROCARBONS BOILING ABOVE 250*C. AND OILY DIMETHYL SILOXANE POLYMERS, AMOUNTING TO FROM 0.01 TO 1% BY WEIGHT OF THE RESULTING SOLUTION, POLYMERIZING THE MONOMER SOLUTION TO A SOLID POLYMER, HEATING THE LATTER AT A DECOMPOSITION TEMPERATURE FROM 135 TO 235*C. TO GENERATE BUBBLES WITHIN THE MASS AND COOLING BELOW SAID TEMPERATURE RANGE BEFORE A SUBSTANTIAL PORTION OF THE BUBBLES MERGE WITHIN THE MASS AND BEFORE A SUBSTANTIAL PORTION OF THE BUBBLES ESCAPE FROM ITS SURFACE.
Claim 2
Dependent Claim
136 words
A PROCESS FOR MAKING POLYMER FOAM WHICH COMPRISES DISSOLVING IN A MONOMERIC ALPHA-CHLOROACRYLIC ESTER OF A MONO-HYDROXY HYDROCARBON OF 1 TO 6 CARBON ATOMS, AN ORGANIC COMPOUND WHICH IS SOLUBLE IN SUCH MONOMER BUT SUFFICIENTLY INSOLUBLE IN THE CORRESPONDING POLYMER TO SEPARATE THEREFROM DURING POLYMERIZATION IN NON-CRYSTALLINE DISPERSED FORM AND WHICH IS SELECTED FROM THE GROUP CONSISTING OF OILY TO WAXY HYDROCARBONS BOILING ABOVE 250*C. AND OILY DIMETHYL SILOXANE POLYMERS, AMOUNTING TO FROM 0.01 TO 1% BY WEIGHT OF THE RESULTING SOLUTION, POLYMERIZING THE MONOMER SOLUTION TO A SOLID POLYMER, HEATING THE LATTER AT A DECOMPOSITION TEMPERATURE FROM 135 TO 235*C. TO GENERATE BUBBLES WITHIN THE MASS AND COOLING BELOW SAID TEMPERATURE RANGE BEFORE A SUBSTANTIAL PORTION OF THE BUBBLES MERGE WITHIN THE MASS AND BEFORE A SUBSTANTIAL PORTION OF THE BUBBLES ESCAPE FROM ITS SURFACE.
References Cited (Backward Citations)
US2684341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |