US3024210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of obtaining room temperature organopolysiloxane resin foams and product obtained therefrom
Assignee: Dow Silicones Corp
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Filing: 1959-11-18
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Granted: 1962-03-06
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Expires: 1979-11-18
Abstract
No abstract record available.
Inventors
- 👤 Donald E Weyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:08
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/02; C08J2383/00; C08J2383/04; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
THE METHOD WHICH COMPRISES MIXING (1) AN ORGANOPOLYSILOXANE HAVING PER SILICON ATOM AN AVERAGE OF FROM 1 TO 1.8 ORGANIC RADICALS SELECTED FROM THE GROUP CONSISTING OF MONOVALENT HYDROCARBONS RADICALS, HALOGENATED MONOVALENT HYDROCARBONS RADICALS AND HALOPHENOXYMETHYL RADICALS, AT LEAST 1 PERCENT BY WEIGHT OF THE SILOXANE UNITS IN SAID POLYSILIXANE HAVING AT LEAST 1 HYDROGEN ATOM ATTACHED TO THE SILICON ATMON THEREOF, (2) FROM .001 TO 30 PERCENT BY WEIGHT BASED ON THE WEIGHT OF THE SILOXANE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF QUATERNARY AMMONIUM HYDROXIDES, QUATERNARY AMMONIUM ALKOXIDES, QUATERNARY AMMONOUM SALTS OF ALIPHATIC CARBOXYLIC ACIDS, SAID ACIDS HAVING AT LEAST 5 CARBON ATOMS, AND QUATERNARY AMMONIUM SALTS OF SILANOLS, AND (3) A HYDROXYLATED COMPOUND SELECTED FROM THE GROUP CONSITING OF SILANOLS, WATER AND ORGANIC NON-ACIDIC ALCHOLIC COMPOUNDS AND THEREAFTER ALLOWING TTHE MIXTURE TO EXPAND INTO A FOAM.
Claim 2
Independent Claim
141 words
THE METHOD WHICH COMPRISES MIXING (1) AN ORGANOPOLYSILOXANE HAVING PER SILICON ATOM AN AVERAGE OF FROM 1 TO 1.8 ORGANIC RADICALS SELECTED FROM THE GROUP CONSISTING OF MONOVALENT HYDROCARBONS RADICALS, HALOGENATED MONOVALENT HYDROCARBONS RADICALS AND HALOPHENOXYMETHYL RADICALS, AT LEAST 1 PERCENT BY WEIGHT OF THE SILOXANE UNITS IN SAID POLYSILIXANE HAVING AT LEAST 1 HYDROGEN ATOM ATTACHED TO THE SILICON ATMON THEREOF, (2) FROM .001 TO 30 PERCENT BY WEIGHT BASED ON THE WEIGHT OF THE SILOXANE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF QUATERNARY AMMONIUM HYDROXIDES, QUATERNARY AMMONIUM ALKOXIDES, QUATERNARY AMMONOUM SALTS OF ALIPHATIC CARBOXYLIC ACIDS, SAID ACIDS HAVING AT LEAST 5 CARBON ATOMS, AND QUATERNARY AMMONIUM SALTS OF SILANOLS, AND (3) A HYDROXYLATED COMPOUND SELECTED FROM THE GROUP CONSITING OF SILANOLS, WATER AND ORGANIC NON-ACIDIC ALCHOLIC COMPOUNDS AND THEREAFTER ALLOWING TTHE MIXTURE TO EXPAND INTO A FOAM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |