Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Multi-component room-temperature-curable silicone elastomer composition

A technology of organic compounds and compositions, which is applied in the field of multi-component room temperature curable silicone elastomer compositions, can solve the problems of slow curing rate and insufficient curing properties of silicone rubber compositions, and achieve excellent deep curing properties, excellent Curability and adhesion, effect of curing time suppression

Inactive Publication Date: 2014-06-25
DOW CORNING TORAY CO LTD
View PDF2 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned multi-component room temperature curable silicone rubber compositions are characterized by a slow curing rate and insufficient curability when used in industrial applications such as the manufacture of multi-pane glass elements, etc.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-component room-temperature-curable silicone elastomer composition
  • Multi-component room-temperature-curable silicone elastomer composition
  • Multi-component room-temperature-curable silicone elastomer composition

Examples

Experimental program
Comparison scheme
Effect test

example

[0105] Hereinafter, the present invention will be described in more detail using examples. In Examples, the contents of components referred to as "parts" mean "parts by weight". The multi-component room temperature curable silicone elastomer composition was evaluated for waterproof adhesion durability and cure by the method described below. It should be noted that the present invention is not limited to these examples.

[0106] Preparation of Silicone Elastomer Base Composition

[0107] Silicone elastomer base compositions were prepared by uniformly mixing raw materials at the compounding ratios shown in Table 1. The curability and service life of the prepared silicone elastomer base composition were evaluated after being left to stand for 24 hours under the atmosphere of the curing and service life evaluation temperature.

[0108] Method used to measure viscosity

[0109] The viscosity of the dimethylpolysiloxane whose both molecular terminals are terminated with hydr...

example 1

[0123] By uniformly mixing 100 parts of dimethyl polysiloxane (viscosity: 80,000 mPa·s) with both molecular ends capped with hydroxyl groups, and 57 parts of dimethyl polysiloxane with both molecular ends capped with trimethylsilyl groups, Silicone (kinematic viscosity: 100mm 2 / s) and 129 parts of fatty acid-treated precipitated calcium carbonate (Hakuenka CCR, manufactured by Shiraishi Kogyo Kaisha, Ltd.) to prepare a silicone elastomer base composition. A crosslinker composition was prepared by uniformly mixing 3.14 parts of phenyltrimethoxysilane, 1.71 parts of carbazasilane A, and 0.017 parts of tin dimethyl dineodecanoate. Here, the weight ratio of phenyltrimethoxysilane to carbazasilyl ring A is 65:35. Then, the silicone elastomer base composition and the crosslinking agent composition were uniformly mixed at a weight ratio of 100:1.7. Using the resulting mixture, the step time, adhesion and curability after 24 hours were evaluated. The results of each evaluation are...

example 2

[0125] A silicone elastomer base composition was prepared in the same manner as in Example 1. A crosslinker composition was prepared by uniformly mixing 4.57 parts of phenyltrimethoxysilane, 0.29 parts of carbazasilane A, and 0.017 parts of tin dimethyldineodecanoate. Here, the weight ratio of phenyltrimethoxysilane to carbazasilyl ring A is 94:6. Then, the silicone elastomer base composition and the crosslinking agent composition were uniformly mixed at a weight ratio of 100:1.7. Using the resulting mixture, the step time, adhesion and curability after 24 hours were evaluated. The results of each evaluation are shown in Table 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

A multi-component room-temperature-curable silicone elastomer composition essentially comprising: (A) a diorganopolysiloxane including (A-1) a diorganopolysiloxane capped at both molecular terminals with alkoxysilyl groups or hydroxysilyl groups and (A-2) a diorganopolysiloxane capped at only one molecular terminal by an alkoxysilyl group or a hydroxysilyl group and at the other molecular terminal with an alkyl group or an alkenyl group, having a viscosity at 25 DEG C of 20 to 1,000,000 mPa.s; (B) a silicon-bonded aryl group-containing alkoxysilane; (C) an organic compound having at least two alkoxysilyl groups in one molecule, and being free of siloxane bonds; and (D) a curing catalyst. In such a multi-component room-temperature-curable silicone elastomer composition, the component (A), the component (B), the component (C), and the component (D) are not comprised simultaneously. The multi-component room-temperature-curable silicone elastomer composition shows sufficient usable life at low temperatures, curing properties with low dependence on temperature and excellent curability at low temperatures, and excellent adhesion.

Description

technical field [0001] The present invention relates to multi-component room temperature curable silicone elastomer compositions. Background technique [0002] It is known that some specific multicomponent room temperature curable silicone elastomer compositions in the form of two separately preserved compositions, etc., whose properties are not affected by atmospheric humidity, are widely used as sealing materials having excellent Deep cure and allow substantially uniform cure throughout the bulk of the sealant material (ie, from the surface to the interior). For example, Japanese Unexamined Patent Application Publication (hereinafter referred to as "Kokai") S48-37452 proposes a two-pack type liquid room temperature curable silicone rubber composition comprising the following: a base composition consisting of The filler and molecular ends are composed of a silanol-terminated diorganopolysiloxane; and a curing agent composition consisting of an alkyl silicate, an amino-func...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/18C08L83/04C08K5/549C08K5/544C08K5/5419
CPCC08G77/388C08G77/38C08G77/18C08K2003/265C08L83/04C08K5/549C08K5/544C08K5/5419
Inventor 太田健治安达浩
Owner DOW CORNING TORAY CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com