US3865766A
Expired / Lapsed
US
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Process for bodying organopolysiloxanes
Assignee: General Electric Co
•
Filing: 1973-12-14
•
Granted: 1975-02-11
•
Expires: 1993-12-14
Abstract
Abstract Silanol-containing organopoly-siloxane resins are bodied by effecting controlled condensation in admixture with diatomaceous earth and a metal soap catalyst. The bodied resins have improved heat life and superior cure rates.
Inventors
- 👤 Duane F Merrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:45
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/06; C08G77/08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08G77/14; C08G77/16; C08G77/70
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
16 words
A PROCESS FOR EFFECTING THE CONTROLLED CONDENSATION OF SILANOL RADICALS IN A SILANOL-CONTAINING ORGANOPOLYSILOXANE, WHICH COMPRISES
Claim 2
Dependent Claim
16 words
A PROCESS FOR EFFECTING THE CONTROLLED CONDENSATION OF SILANOL RADICALS IN A SILANOL-CONTAINING ORGANOPOLYSILOXANE, WHICH COMPRISES
Claim 3
Dependent Claim
53 words
HEATING AT A TEMPERATURE BETWEEN 50*C. AND 250*C., A MIXTURE COMPRISING SAID SILANOL-CONTAINING ORGANOPOLYSILOXANE, DIATOMACEOUS EARTH IN AN AMOUNT OF FROM 0.75 TO 20% BY WEIGHT OF SAID SILANOL-CONTAINING ORGANOPOLYSILOXANE AND A METAL SOAP CATALYST IN AN AMOUNT OF FROM 0.0005 TO 0.002%, CALCULATED AS METAL, BY WEIGHT OF SAID SILANOL-CONTAINING ORGANOPOLYSILOXANE; AND
Claim 4
Dependent Claim
53 words
HEATING AT A TEMPERATURE BETWEEN 50*C. AND 250*C., A MIXTURE COMPRISING SAID SILANOL-CONTAINING ORGANOPOLYSILOXANE, DIATOMACEOUS EARTH IN AN AMOUNT OF FROM 0.75 TO 20% BY WEIGHT OF SAID SILANOL-CONTAINING ORGANOPOLYSILOXANE AND A METAL SOAP CATALYST IN AN AMOUNT OF FROM 0.0005 TO 0.002%, CALCULATED AS METAL, BY WEIGHT OF SAID SILANOL-CONTAINING ORGANOPOLYSILOXANE; AND
Claim 5
Dependent Claim
46 words
RECOVERING AN ORGANOPOLYSILOXANE FROM THE RESULTING MIXTURE OF (1), HAVING A VISCOSITY HIGHER THAN SAID SILANOLCONTAINING ORGANOPOLYSILOXANE WHICH HAS AN AVERAGE RATIO OF FROM 1 TO 1.8 ORGANO RADICALS PER SILICON ATOM, SELECTED FROM THE GROUP CONSISTING OF MONOVALENT HYDROCARBON RADICALS AND HALOGENATED MONOVALENT HYDROCARBON RADICALS.
Claim 6
Dependent Claim
46 words
RECOVERING AN ORGANOPOLYSILOXANE FROM THE RESULTING MIXTURE OF (1), HAVING A VISCOSITY HIGHER THAN SAID SILANOLCONTAINING ORGANOPOLYSILOXANE WHICH HAS AN AVERAGE RATIO OF FROM 1 TO 1.8 ORGANO RADICALS PER SILICON ATOM, SELECTED FROM THE GROUP CONSISTING OF MONOVALENT HYDROCARBON RADICALS AND HALOGENATED MONOVALENT HYDROCARBON RADICALS.
Claim 7
Dependent Claim
18 words
recovering a methylphenylpolysiloxane from the resulting mixture of (1), having a viscosity higher than said methylphenylpolysiloxane of (1).
Claim 8
Dependent Claim
18 words
recovering a methylphenylpolysiloxane from the resulting mixture of (1), having a viscosity higher than said methylphenylpolysiloxane of (1).
Claim 9
Dependent Claim
18 words
recovering a methylphenylpolysiloxane from the resulting mixture of (1), having a viscosity higher than said methylphenylpolysiloxane of (1).
Claim 10
Dependent Claim
18 words
recovering a methylphenylpolysiloxane from the resulting mixture of (1), having a viscosity higher than said methylphenylpolysiloxane of (1).
Claim 11
Dependent Claim
46 words
recovering an organopolysiloxane from the resulting mixture of (1), having a viscosity higher than said silanol-containing organopolysiloxane which has an average ratio of from 1 to 1.8 organo radicals per silicon atom, selected from the group consisting of monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals.
Claim 12
Dependent Claim
46 words
recovering an organopolysiloxane from the resulting mixture of (1), having a viscosity higher than said silanol-containing organopolysiloxane which has an average ratio of from 1 to 1.8 organo radicals per silicon atom, selected from the group consisting of monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals.
Claim 13
Dependent Claim
27 words
A process as defined in claim 1 including the step of reducing any excess acidity in said silanol-containing organopolysiloxane prior to adding it to said mixture (1).
Claim 14
Dependent Claim
18 words
recovering a methylphenylpolysiloxane from the resulting mixture of (1), having a viscosity higher than said methylphenylpolysiloxane of (1).
Claim 15
Dependent Claim
18 words
recovering a methylphenylpolysiloxane from the resulting mixture of (1), having a viscosity higher than said methylphenylpolysiloxane of (1).
Claim 16
Dependent Claim
46 words
recovering an organopolysiloxane from the resulting mixture of (1), having a viscosity higher than said silanol-containing organopolysiloxane which has an average ratio of from 1 to 1.8 organo radicals per silicon atom, selected from the group consisting of monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals.
Claim 17
Dependent Claim
46 words
recovering an organopolysiloxane from the resulting mixture of (1), having a viscosity higher than said silanol-containing organopolysiloxane which has an average ratio of from 1 to 1.8 organo radicals per silicon atom, selected from the group consisting of monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals.
Claim 18
Dependent Claim
18 words
recovering a methylphenylpolysiloxane from the resulting mixture of (1), having a viscosity higher than said methylphenylpolysiloxane of (1).
Claim 19
Dependent Claim
18 words
recovering a methylphenylpolysiloxane from the resulting mixture of (1), having a viscosity higher than said methylphenylpolysiloxane of (1).
Claim 20
Dependent Claim
28 words
A process as defined in claim 1 in which said mixture of (1) is an organic solvent solution comprising a major amount by weight of said silanol-containing organopolysiloxane.
Claim 21
Dependent Claim
13 words
A process as defined in claim 1 wherein said organopolysiloxane is a methylphenylpolysiloxane.
Claim 22
Dependent Claim
28 words
A process as defined in claim 1 wherein the metal component in said metal soap catalyst is selected from the group consisting of iron, zinc, tin and cobalt.
Claim 23
Dependent Claim
28 words
A process as defined in claim 5 wherein said metal soap catalyst is selected from the group consisting of iron octoate, zinc octoate, tin octoate and cobalt octoate.
Claim 24
Dependent Claim
15 words
A process as defined in claim 6 wherein said metal soap catalyst is iron octoate.
Claim 25
Dependent Claim
4 words
A process which comprises
Claim 26
Dependent Claim
4 words
A process which comprises
Claim 27
Dependent Claim
26 words
A process as defined in claim 8 wherein the amount of unactivated diatomaceous earth in the mixture of (1) is 1% by weight of said methylphenylpolysiloxane.
Claim 28
Dependent Claim
36 words
A process as defined in claim 8 wherein the metal soap catalyst in the mixture of (1) is iron octoate in an amount to provide 0.001% calculated as iron, based on the weight of said methylphenylpolysiloxane.
Claim 29
Dependent Claim
4 words
A process which comprises
Claim 30
Dependent Claim
4 words
A process which comprises
Claim 31
Dependent Claim
26 words
A process as defined in claim 11 wherein the amount of unactivated diatomaceous earth in the mixture of (1) is 1% by weight of said methylphenylpolysiloxane.
Claim 32
Dependent Claim
36 words
A process as defined in claim 11 wherein the metal soap catalyst in the mixture of (1) is iron octoate in an amount to provide 0.001% calculated as iron, based on the weight of said methylphenylpolysiloxane.
Claim 33
Dependent Claim
16 words
A process for effecting the controlled condensation of silanol radicals in a silanol-containing organopolysiloxane, which comprises
Claim 34
Dependent Claim
16 words
A process for effecting the controlled condensation of silanol radicals in a silanol-containing organopolysiloxane, which comprises
Claim 35
Dependent Claim
27 words
A process as defined in claim 14 including the step of reducing any excess acidity in said silanol-containing organopolysiloxane prior to adding it to said mixture (1).
Claim 36
Dependent Claim
28 words
A process as defined in claim 14 in which said mixture of (1) is an organic solvent solution comprising a major amount by weight of said silanol-containing organopolysiloxane.
Claim 37
Dependent Claim
13 words
A process as defined in claim 14 wherein said organopolysiloxane is a methylphenylpolysiloxane.
Claim 38
Dependent Claim
28 words
A process as defined in claim 14 wherein the metal component in said metal soap catalyst is selected from the group consisting of iron, zinc, tin and cobalt.
Claim 39
Dependent Claim
28 words
A process as defined in claim 18 wherein said metal soap catalyst is selected from the group consisting of iron octoate, zinc octoate, tin octoate and cobalt octoate.
Claim 40
Dependent Claim
15 words
A process as defined in claim 19 wherein said metal soap catalyst is iron octoate.
Claim 41
Dependent Claim
4 words
A process which comprises
Claim 42
Dependent Claim
4 words
A process which comprises
Claim 43
Dependent Claim
34 words
A process as defined in claim 21 wherein the amount of diatomaceous earth which has not been activated by pretreatment with acid in the mixture of (1) is 1% by weight of said methylphenylpolysiloxane.
Claim 44
Dependent Claim
36 words
A process as defined in claim 21 wherein the metal soap catalyst in the mixture of (1) is iron octoate in an amount to provide 0.001% calculated as iron, based on the weight of said methylphenylpolysiloxane.
Claim 45
Dependent Claim
4 words
A process which comprises
Claim 46
Dependent Claim
4 words
A process which comprises
Claim 47
Dependent Claim
34 words
A process as defined in claim 24 wherein the amount of diatomaceous earth which has not been activated by pretreatment with acid in the mixture of (1) is 1% by weight of said methylphenylpolysiloxane.
Claim 48
Dependent Claim
36 words
A process as defined in claim 24 wherein the metal soap catalyst in the mixture of (1) is iron octoate in an amount to provide 0.001% calculated as iron, based on the weight of said methylphenylpolysiloxane.
References Cited (Backward Citations)
US3375223A
Cited
US3786015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |