Silicone-based curable composition containing polycyclic hydrocarbon group

A technology of polycyclic hydrocarbon base and composition, which is applied in the field of silicone-based curable composition, can solve problems such as poor operability, poor crack resistance, and easy contamination, and achieve high hardness, good crack resistance, The effect of excellent heat fading resistance

Active Publication Date: 2008-03-19
SHIN ETSU CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Soft silicones generally have good heat resistance, but they have poor handling and are prone to contamination
Also, while hard silicones have excellent workability and handling characteristics, they are poorly resistant to chipping

Method used

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  • Silicone-based curable composition containing polycyclic hydrocarbon group
  • Silicone-based curable composition containing polycyclic hydrocarbon group
  • Silicone-based curable composition containing polycyclic hydrocarbon group

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0068]

[0069] Component (A) of the composition of the present invention can be produced as an addition reaction product not containing SiH groups by making 1 mole of the above-mentioned component containing two SiH groups per molecule in the presence of a hydrosilylation reaction catalyst (a) with an excess equivalent of more than 1 mole but not more than 10 moles, preferably more than 1 mole but not more than 5 moles of component (b) containing two addition-reactive carbon-carbon double bonds per molecule Response gets.

[0070] Component (A) obtained by this method contains not only addition-reactive carbon-carbon double bonds derived from component (b), but also addition-reactive carbon-carbon double bonds derived from component (a) Double bonds (specifically, addition-reactive carbon-carbon double bonds derived from the R group in general formula (1) and / or the R' group in general formula (2)). As a result, component (A) contains at least two addition-reactive carbon-...

Embodiment 1

[0193] (A1) 5 parts by mass of the reaction product obtained in Synthesis Example 1, (A2) 60 parts by mass of the reaction product obtained in Synthesis Example 2.

[0194] (B1) 5 parts by mass of (MeHSiO) 4 , (B2) 30 parts by mass of the reaction product obtained in Synthesis Example 3.

[0195] (molar ratio [total SiH groups in components (B1) and (B2)] / [total carbon-carbon double bonds in components (A1) and (A2)]=1.03, hereinafter, the SiH groups The molar ratio of the carbon-carbon double bond is abbreviated as "SiH / C=C (molar ratio)",

[0196] (C) a sufficient amount of platinum-vinylsiloxane complex relative to the total mass of components (A1), (A2), (B1) and (B2) to provide 20 ppm of platinum metal atoms,

[0197] (D) 0.05 parts by mass of a stabilizer containing a hindered amine structure and a phenol structure (TINUVIN144, produced by Ciba Specialty Chemicals Inc.), and 0.03 parts by mass of 1-ethynylcyclohexanol

[0198] The above materials are mixed uniformly t...

Embodiment 2

[0200] (A2) the reaction product that obtains by synthetic embodiment 2 of 81 mass parts,

[0201] (B1) 19 parts by mass of (MeHSiO) 4

[0202] (SiH / C=C (molar ratio)=0.98),

[0203] (C) a sufficient amount of platinum-vinylsiloxane complex relative to the total mass of components (A2) and (B1) to provide 20 ppm of platinum metal atoms,

[0204] (D) 0.05 parts by mass of a stabilizer containing a hindered amine structure and a phenol structure (TINUVIN144, produced by Ciba Specialty Chemicals Inc.), and 0.03 parts by mass of 1-ethynylcyclohexanol

[0205] The above materials are mixed uniformly to form a composition. The composition was poured into a mold formed of a glass plate to give a thickness of 2 mm, and then heated at 150° C. for 2 hours to obtain a cured product.

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Abstract

The present invention relates to a curable composition having relatively high hardness, excellent heat resistance and chipping resistance, which can be used as a sealing material for optical elements and the like. The curable composition of the present invention is a polycyclic hydrocarbon group-containing silicone-based curable composition, which contains: (A) an addition reaction product of compounds (a) and (b), wherein (a) is a compound containing two (b) a polycyclic hydrocarbon containing two addition-reactive carbon-carbon double bonds per molecule, wherein the addition reaction product contains at least two addition-reactive carbon-carbon double bonds per molecule reactive carbon-carbon double bonds, (B) compounds containing three or more hydrogen atoms bonded to silicon atoms per molecule, (C) hydrosilylation reaction catalysts, and (D) compounds containing Stabilizer for hindered amine structure and phenol structure.

Description

technical field [0001] The present invention relates to a polycyclic hydrocarbon group-containing silicone-based curable composition useful as a sealing material for optical devices such as optical elements and other electronic devices such as semiconductor elements. Background technique [0002] In recent years, the output power of blue-white light-emitting diodes (LEDs) has gradually increased, and they are now used in mobile phone flashlights, backlights for liquid crystal displays, and general lighting equipment. However, this increase in LED output power also results in an increase in emitted UV light and heat generation, which means that the materials used to build these devices need to have higher levels of resistance to light, heat and shattering. [0003] Coatings and encapsulants for LEDs require high transparency, and although commonly used epoxies have high hardness and excellent resistance to chipping, the material is known to discolor under the influence of UV ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/48C08L83/07C08L83/05
CPCC08G77/50C08G77/12C08K5/56C08L83/14C08G77/14C08G77/26C08G77/08
Inventor 田部井荣一
Owner SHIN ETSU CHEM IND CO LTD
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