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EP0392877A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Room temperature curable organopolysiloxane composition

Assignee: Shin-Etsu Chemical Co Ltd
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Filing: 1990-04-17
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Granted: —
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Expires: 2010-04-17
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Abstract

Abstract A room temperature curable organopolysiloxane composition comprising a diorganopolysiloxane having a hydroxyl group or an alkoxy groups, a filler, a particular alkoxysilane, an organosilicon compound having a particular guanidinyl group, and an organic tin compound, and further comprising an organosilicon compound having at least one group represented by the general formula: where R⁴ is a substituted or unsubstituted monovalent hydrocarbon group, or a substituted or unsubstituted phenyl group, R⁵ and R⁶ are each a hydrogen atom, methyl or ethyl group, and n is an integer of 0, 1 or 2. By virtue of the last component, the composition exhibits markedly good storage stability.

Inventors

  • 👤 Masatoshi Arai
  • 👤 Yoshifumi Inoue
  • 👤 Yoshio Inoue

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 21:37
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08L83/06; C08K; C08K5/00; C08K5/54; C08K5/544; C08K5/5465; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/16; C08G77/18; Y; Y10; Y10S; Y10S528/00; Y10S528/901

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 222 words
A room temperature curable organopolysiloxane com­position comprising: (A) 100 parts by weight of a diorganopolysiloxane having a hydroxyl group at both teminal ends of its molecular chain, or 2 or 3 C₁-C₄ alkoxy groups at each terminal end of its molecular chain; (B) 1 to 400 parts by weight of a filler; (C) 0 to 50 parts by weight of an alkoxysilane represented by the general formula (I): (R¹) m Si(OR²) 4-m (I) where R¹ is a substituted or unsubstituted C₁-C₂₀ monovalent hydrocarbon groups, R² is a C₁-C₄ alkyl group or a C₂-C₄ alkoxyalkyl group, m is an integer of 0 or 1, or a partial hydrolysis product thereof; (D) 0.01 to 10 parts by weight of an organosilicon compound having at least one group represented by the gen­eral formula (II): [(R³)₂N]₂C=N-      (II) where R³ is a hydrogen atom or a C₁-C₆ monovalent hydrocarbon group, in its molecule; (E) 0.01 to 10 parts by weight of an organic tin compound; (F) 0.1 to 20 parts by weight of an organosilicon compound having at least one group represented by the gen­eral formula (III): where R⁴ is a substituted or unsubstituted C₁-C₂₀ monovalent hydrocarbon group, or a substituted or un­substituted phenyl group, R⁵ and R⁶ are each a hydrogen atom, methyl or ethyl group, and n is an integer of 0, 1 or 2.
Claim 2
Dependent Claim 222 words
A room temperature curable organopolysiloxane com­position comprising: (A) 100 parts by weight of a diorganopolysiloxane having a hydroxyl group at both teminal ends of its molecular chain, or 2 or 3 C₁-C₄ alkoxy groups at each terminal end of its molecular chain; (B) 1 to 400 parts by weight of a filler; (C) 0 to 50 parts by weight of an alkoxysilane represented by the general formula (I): (R¹) m Si(OR²) 4-m (I) where R¹ is a substituted or unsubstituted C₁-C₂₀ monovalent hydrocarbon groups, R² is a C₁-C₄ alkyl group or a C₂-C₄ alkoxyalkyl group, m is an integer of 0 or 1, or a partial hydrolysis product thereof; (D) 0.01 to 10 parts by weight of an organosilicon compound having at least one group represented by the gen­eral formula (II): [(R³)₂N]₂C=N-      (II) where R³ is a hydrogen atom or a C₁-C₆ monovalent hydrocarbon group, in its molecule; (E) 0.01 to 10 parts by weight of an organic tin compound; (F) 0.1 to 20 parts by weight of an organosilicon compound having at least one group represented by the gen­eral formula (III): where R⁴ is a substituted or unsubstituted C₁-C₂₀ monovalent hydrocarbon group, or a substituted or un­substituted phenyl group, R⁵ and R⁶ are each a hydrogen atom, methyl or ethyl group, and n is an integer of 0, 1 or 2.
Claim 3
Dependent Claim 29 words
The composition of claim 1, wherein the group represented by said general formula (III) contained in the organosilicon compound of said component (F) is linked to a silicon atom.
Claim 4
Dependent Claim 46 words
The composition of Claim 3, wherein said organosilicon compound of the component (F) contains a C₁-­C₄ alkoxy group in addition to the group of the general formula (III), and the alkoxysilane or its partial hydrolysis product of the component (C) is not contained in the composition.
Claim 5
Dependent Claim 54 words
The composition of claim 1, wherein said organosilicon compound of the component (F) contains no alkoxy group, and the alkoxysilane or its partial hydrolysis product of the component (C) is contained in the composition in an amount of from 1 to 50 parts by weight per 100 parts by weight of said component (A).
Claim 6
Dependent Claim 30 words
The composition of Claim 1, wherein the group represented by the general formula (II) is linked to a silicon atom through a C₂-C₄ alkylene group or a C₄-C₆ oxyalkylene group.

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