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US3922246A Expired / Lapsed US ⏱️ 0.0 years remaining

Organopolysiloxane compositions which cure at ambient temperature

Assignee: Rhone Poulenc SA
•
Filing: 1974-03-04
•
Granted: 1975-11-25
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Expires: 1994-03-04
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Abstract

Abstract iv. 0 to 100 parts of an optionally organosilicontreated inorganic filler; V. 0 TO 100 PARTS OF PLASTICISER AND/OR ORGANOSILICON STABILISER; AND VI. 0.5 TO 8 PARTS OF AN ORGANOSILICON RESIN CONSISTING OF UNITS OF THE FORMULAE R''''''(CH3)2SiO0.5 and SiO2; Such compositions are particularly suitable for coating electric and electronic devices because neither they nor the elastomers obtained therefrom on curing corrode copper or other metals. OR D. A TITANIUM CHELATE OF THE FORMULA (D): An organopolysiloxane composition is provided which consists essentially of a mixture of the following ingredients by weight: I. 100 PARTS OF A Alpha , omega -DIHYDROXYDIORGANOPOLYSILOXANE POLYMER, OF VISCOSITY AT LEAST ABOUT 600 CPo at 25*C; ii. 1 to 15 parts of an organosilicon compound which is either A. A MONOMER OF THE FORMULA (A): RxSi((OCH2CH2)aOR'')4 x, or B. A POLYMER RESULTING FROM THE PARTIAL HYDROLYSIS OF AT LEAST ONE MONOMER OF FORMULA Si(OR'')4; iii. 0.2 to 6 parts of an organic derivative of titanium, which is either: A. A MONOMER OF THE FORMULA (B): Ti((OCH2CH2)bOR'''')4, b. a polymer resulting from the partial hydrolysis of at least one monomer of the formula Ti(OR'''')4; c. a titanium chelate of the formula (C):

Inventors

  • 👤 Louis Ceyzeriat
  • 👤 Michel Letoffe

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 22:01
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/46; C; C08; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/02; C08G77/04; C08G77/14; C08G77/16; C08G77/20; C08G77/22; C08G77/24; C08G77/26; C08G77/70

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 288 words
AN ORGANOPOLYSILOXANE COMPOSITION WHICH CONSISTS ESSENTIALLY OF A MIXTURE OF THE FOLLOWING INGREDIENTS, BY WEIGHT: I. 100 PARTS OF A A,W-DIHYDROXYDIORGANOPOLYXILOXANE POLYMER, OF VISCOSITY AT LEAST ABOUT 600 CPO AT 25*C, CONSISTING ESSENTIALLY OF DIORGANOSILOXY UNITS, THE ORGANIC RADICALS BONDED TO THE SILICON ATOMS BEING SELECTED FROM THALKYL RADICALS WITH ONE TO THREE CARBON ATOMS, HALOGENALKYL RADIALS WITH THREE OR FOUR CARBON ATOMS, THE VINYL RADICAL, ARYL OR HALOGENOARYL RADICALS WITH SIX TO EIGHT CARBON ATOMS OR CYCLOALKYL RADICALS WITH THREE OR FOUR CARBON ATOMS, WITH THE PROVISO THAT AT LEAST 50% OF THESE ORGANIC RADICALS RADICALS ARE METHYL RADICALS; II. 1 TO 15 PARTS OF AN ORGANOSILICON COMPOUND WHICH IS EITHER; A. A MONOMER OF THE FORMULA (A): RXSI(OCH2CH2)AOR'')4-X, IN WHICH R REPRESENTS A HYDROGEN RADICAL WITH ONE TO EIGHT CARBON ATOMS, R REPRESENTS AN ALKYL RADICAL WITH ONE TO FOUR CARBON ATOMS, AND X AND A INDEPENDENTLY REPRESENT ZERO OR 1, OR B. A POLYMER RESULTING FROM THE PARTIAL HYDROLYSIS OF AT LEAST ONE MONOMER OF FORMULA SI(OR'')4, IN WHICH R'' IS AS DEFINED ABOVE; III. 0.2 TO 6 PARTS OF AN ORGANIC DERIVATIVE OF TITANIUM, WHICH IS EITHER: A. A MONOMER OF THE FORMULA (B9: TI((OCH2CH2)BOR")4, IN WHICH R" REPRESENTS AN ALKYL RADICAL WITH ONE TO 10 CARBON ATOMS AND B REPRESENTS ZERO, ONE OR 2; SUCH THA WHEN B IS ZERO, THE ALKYL RADICAL HAS THREE TO 10 CARBON ATOMS AND WHEN B IS 1 OR 2, THE ALKYL RADICAL HAS ONE TO FOUR CARBON ATOMS, B. A POLYMER RESULTING FROM THE PARTIAL HYDROLYSIS OF AT LEAST ONE MONOMER OF THE FORMULA TI(OR")4, IN WHICH R" REPRESENTS AN ALKYL RADICAL WITH THREE TO 10 CARBON ATOMS, C. A TITANIUM CHELATE OF THE FORMULA (C);
Claim 2
Dependent Claim 288 words
AN ORGANOPOLYSILOXANE COMPOSITION WHICH CONSISTS ESSENTIALLY OF A MIXTURE OF THE FOLLOWING INGREDIENTS, BY WEIGHT: I. 100 PARTS OF A A,W-DIHYDROXYDIORGANOPOLYXILOXANE POLYMER, OF VISCOSITY AT LEAST ABOUT 600 CPO AT 25*C, CONSISTING ESSENTIALLY OF DIORGANOSILOXY UNITS, THE ORGANIC RADICALS BONDED TO THE SILICON ATOMS BEING SELECTED FROM THALKYL RADICALS WITH ONE TO THREE CARBON ATOMS, HALOGENALKYL RADIALS WITH THREE OR FOUR CARBON ATOMS, THE VINYL RADICAL, ARYL OR HALOGENOARYL RADICALS WITH SIX TO EIGHT CARBON ATOMS OR CYCLOALKYL RADICALS WITH THREE OR FOUR CARBON ATOMS, WITH THE PROVISO THAT AT LEAST 50% OF THESE ORGANIC RADICALS RADICALS ARE METHYL RADICALS; II. 1 TO 15 PARTS OF AN ORGANOSILICON COMPOUND WHICH IS EITHER; A. A MONOMER OF THE FORMULA (A): RXSI(OCH2CH2)AOR'')4-X, IN WHICH R REPRESENTS A HYDROGEN RADICAL WITH ONE TO EIGHT CARBON ATOMS, R REPRESENTS AN ALKYL RADICAL WITH ONE TO FOUR CARBON ATOMS, AND X AND A INDEPENDENTLY REPRESENT ZERO OR 1, OR B. A POLYMER RESULTING FROM THE PARTIAL HYDROLYSIS OF AT LEAST ONE MONOMER OF FORMULA SI(OR'')4, IN WHICH R'' IS AS DEFINED ABOVE; III. 0.2 TO 6 PARTS OF AN ORGANIC DERIVATIVE OF TITANIUM, WHICH IS EITHER: A. A MONOMER OF THE FORMULA (B9: TI((OCH2CH2)BOR")4, IN WHICH R" REPRESENTS AN ALKYL RADICAL WITH ONE TO 10 CARBON ATOMS AND B REPRESENTS ZERO, ONE OR 2; SUCH THA WHEN B IS ZERO, THE ALKYL RADICAL HAS THREE TO 10 CARBON ATOMS AND WHEN B IS 1 OR 2, THE ALKYL RADICAL HAS ONE TO FOUR CARBON ATOMS, B. A POLYMER RESULTING FROM THE PARTIAL HYDROLYSIS OF AT LEAST ONE MONOMER OF THE FORMULA TI(OR")4, IN WHICH R" REPRESENTS AN ALKYL RADICAL WITH THREE TO 10 CARBON ATOMS, C. A TITANIUM CHELATE OF THE FORMULA (C);
Claim 3
Dependent Claim 33 words
A composition according to claim 1, in which the organosilicon compound is selected from methyltrimethoxysilane, ethyltrimethoxysilane, vinyl-tri-( Beta -methoxyethoxy)silane, ethyl silicate, propyl silicate, Beta -methoxyethyl silicate or ethyl polysilicate containing 40% of silica.
Claim 4
Dependent Claim 33 words
A composition according to claim 1, in which the organic derivative of titanium is selected from isopropyl titanate, butyl titanate, butyl polytitanate containing 33% of titanium oxide, or a chelate of the formula:
Claim 5
Dependent Claim 20 words
A composition according to claim 1 in which component (ii) is present in an amount from 2 to 12 parts.
Claim 6
Dependent Claim 20 words
A composition according to claim 1 in which component (iii) is present in an amount from 0.3 to 5 parts.
Claim 7
Dependent Claim 20 words
A composition according to claim 1 in which component (vi) is present in an amount from 0.8 to 7 parts.
Claim 8
Dependent Claim 22 words
A process for preparing a composition as defined in claim 1 which comprises mixing the specified ingredients in the absence of moisture.
Claim 9
Dependent Claim 49 words
A process according to claim 7 which comprises mixing components (i) and (vi), and (iv) and (v) if desired, under a pressure of 5 to 30 mm Hg at a temperature above 80*C and then to mix in components (ii) and (iii) at atmospheric preSsure in a dry atmosphere.

References Cited (Backward Citations)

US3527659A Cited
US3689454A Cited
US3779986A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-11-24 1979-05-26 1979-11-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-11-24 1983-05-26 1983-11-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-11-24 1987-05-26 1987-11-25 $7700.00 Window Closed / Lapsed

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