US3205283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solventless liquid organopolysiloxane encapsulating compositions
Assignee: —
•
Filing: —
•
Granted: 1965-09-07
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Expires: 1982-09-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:39
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/20; C08G77/06; C08G77/14; C08G77/16; C08L; C08L83/00; C08L83/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
THE METHOD OF PREPARING A SOLVENTLESS ORGANOPOLYSILOXANE ENCAPSULATING FLUID WHICH COMPRISES (A) FORMING A HOMOGENOUS MIXTURE OF (1) AN ORGANIC SOLVENT SOLUTION OF A RESIOUS COPOLYMER OF R3SIO0.5 UNITS AND SIO2 UNITS, WHERE R IS A MONOVALENT HYDROCARBON RADICAL AND WHERE SAID RESINOUS COPOLYMER CONTAINS AN AVERAGE OF FROM ABOUT 0.3 TO 0.8 R3SIO0.5 UNITS PER SIO2 UNIT, AND (2) A LIQUID SILANOL CHAIN-STOPPED DIORGRANOPOLYSILOXANE HAVING A VISCOSITY OF FROM ABOUT 100 TO 4,000 CENTIPOISES WHEN MEASURED AT 25*C., THE ORGANO GROUPS OF SAID DIORGANOPOLYSILIOXANE BEING MONOVALENT HYDROCARBON RADICALS, AND (B) HEATING SAID HOMOGENEOUS MIXTURE AT AN ELEVATED TEMPERATURE TO REMOVE SUBSTANTALLY ALL OF SAID ORGANIC SOLVENTS.
Claim 2
Independent Claim
107 words
THE METHOD OF PREPARING A SOLVENTLESS ORGANOPOLYSILOXANE ENCAPSULATING FLUID WHICH COMPRISES (A) FORMING A HOMOGENOUS MIXTURE OF (1) AN ORGANIC SOLVENT SOLUTION OF A RESIOUS COPOLYMER OF R3SIO0.5 UNITS AND SIO2 UNITS, WHERE R IS A MONOVALENT HYDROCARBON RADICAL AND WHERE SAID RESINOUS COPOLYMER CONTAINS AN AVERAGE OF FROM ABOUT 0.3 TO 0.8 R3SIO0.5 UNITS PER SIO2 UNIT, AND (2) A LIQUID SILANOL CHAIN-STOPPED DIORGRANOPOLYSILOXANE HAVING A VISCOSITY OF FROM ABOUT 100 TO 4,000 CENTIPOISES WHEN MEASURED AT 25*C., THE ORGANO GROUPS OF SAID DIORGANOPOLYSILIOXANE BEING MONOVALENT HYDROCARBON RADICALS, AND (B) HEATING SAID HOMOGENEOUS MIXTURE AT AN ELEVATED TEMPERATURE TO REMOVE SUBSTANTALLY ALL OF SAID ORGANIC SOLVENTS.
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |