US3170894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicon-bonded polyhydrocarbonoxy organopolysiloxanes and one-component room temperature cured compositions containing said organopolysiloxanes and condensation catalysts
Assignee: Dow Silicones Corp
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Filing: 1960-09-26
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Granted: 1965-02-23
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Expires: 1980-09-26
Abstract
No abstract record available.
Inventors
- 👤 Paul L Brown
- 👤 Hyde James Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:13
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/14; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A POLYSILOXANE COMPOSITION EACH MOLECULE OF WHICH CONSISTS ESSENTIALLY OF (1) AT LEAST TWO UNITS OF THE FORMULA ZA-SI(-RB)-O((4-A-B)/2)AND (2) UNITS OF THE FORMULA RD-SI-O((4-D)/2)IN WHICH EACH R IS SELECTED FROM THE GROUP CONSISTING OF MONOVALENT HYDROCARBON RADICALS AND HALOGENATED MONOVALENT HYDROCARBON RADICALS, EACH Z IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE ATOMS AND RADICALS OF THE FORMULA R''(OCH2CH2)CO- WHEREIN R'' IS SELECTED FROM THE THE GROUP CONSISTING OF MONOVALENT HYDROCARBON RADICALS AND HALOGENATED MONOVALENT HYDROCARBON RADICALS AND C HAS A VALUE RANGING FROM 1 TO 3, EACH A HAS A VALUE RANGING FROM 2 TO 3, EACH B HAS A VALUE RANGING FROM 0 TO 2, THE SUM OF A+B IN ANY UNIT (1) IS NO GREATER THAN 3, AND EACH D HAS A VALUE RANGING FROM 0 TO 2, AND THERE BEING IN EACH MOLECULE OF THE ULTIMATE SILOXANE COMPOSITION AN AVERAGE OF 1.3 TO 2.0 R GROUPS PER SILICON ATOM AND ESSENTIALLY ALL OF THE MOLECULES IN SAID SILOXANE CONTAINING MORE THAN 7 UNITS OF (2).
Claim 2
Dependent Claim
170 words
A POLYSILOXANE COMPOSITION EACH MOLECULE OF WHICH CONSISTS ESSENTIALLY OF (1) AT LEAST TWO UNITS OF THE FORMULA ZA-SI(-RB)-O((4-A-B)/2)AND (2) UNITS OF THE FORMULA RD-SI-O((4-D)/2)IN WHICH EACH R IS SELECTED FROM THE GROUP CONSISTING OF MONOVALENT HYDROCARBON RADICALS AND HALOGENATED MONOVALENT HYDROCARBON RADICALS, EACH Z IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE ATOMS AND RADICALS OF THE FORMULA R''(OCH2CH2)CO- WHEREIN R'' IS SELECTED FROM THE THE GROUP CONSISTING OF MONOVALENT HYDROCARBON RADICALS AND HALOGENATED MONOVALENT HYDROCARBON RADICALS AND C HAS A VALUE RANGING FROM 1 TO 3, EACH A HAS A VALUE RANGING FROM 2 TO 3, EACH B HAS A VALUE RANGING FROM 0 TO 2, THE SUM OF A+B IN ANY UNIT (1) IS NO GREATER THAN 3, AND EACH D HAS A VALUE RANGING FROM 0 TO 2, AND THERE BEING IN EACH MOLECULE OF THE ULTIMATE SILOXANE COMPOSITION AN AVERAGE OF 1.3 TO 2.0 R GROUPS PER SILICON ATOM AND ESSENTIALLY ALL OF THE MOLECULES IN SAID SILOXANE CONTAINING MORE THAN 7 UNITS OF (2).
References Cited (Backward Citations)
US2902467A
Cited
US2917480A
Cited
US2831011A
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US2865884A
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BE554172A
Cited
US2881199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |