JP2004182724A5

JP2004182724A5 -

Info

Publication number: JP2004182724A5
Application number: JP2003386254A
Authority: JP
Filing date: 2003-11-17
Publication date: 2007-01-11

Description

上記の目的を達成するために、本発明は下記の構成を有する。
（１）下記一般式（ａ１）で表されるエポキシシランに、アクリル酸またはメタクリル酸を反応させて下記一般式（ａ）または（ａ’）で表されるシリコーンモノマーを合成する反応を、触媒を該エポキシシランに対して２５ｍｏｌ％以上、反応系において該触媒が溶解しうる量以下加えて行うことを特徴とするシリコーンモノマー製造方法。 In order to achieve the above object, the present invention has the following configuration.
(1) A catalyst for reacting an epoxysilane represented by the following general formula (a1) with acrylic acid or methacrylic acid to synthesize a silicone monomer represented by the following general formula (a) or (a ′) By adding at least 25 mol% of the epoxysilane to the epoxysilane in an amount sufficient to dissolve the catalyst in the reaction system .

（２）前記触媒が、アルカリ金属原子またはアルカリ土類金属原子を含むものである上記（１）項記載のシリコーンモノマー製造方法。
（３）前記触媒が、（メタ）アクリル酸アルカリ金属塩である上記（１）項記載のシリコーンモノマー製造方法。 (2) The method for producing a silicone monomer according to the above (1), wherein the catalyst contains an alkali metal atom or an alkaline earth metal atom.
(3) The method for producing a silicone monomer according to the above (1), wherein the catalyst is an alkali metal (meth) acrylate.

実施例２〜４
触媒およびその添加量を表１のようにかえて、上記実施例１と同様の方法で実験を行った。ＧＣ測定を行ったところ、表１のような結果が得られた。 Examples 2 to 4
An experiment was conducted in the same manner as in Example 1 except that the catalyst and the amount of addition were changed as shown in Table 1. When the GC measurement was performed, the results shown in Table 1 were obtained.

比較例１〜６
触媒およびその添加量を表１のようにかえて、上記実施例１と同様の方法で実験を行った。ＧＣ測定を行ったところ、表１のような結果が得られた。 Comparative Examples 1 to 6
An experiment was conducted in the same manner as in Example 1 except that the catalyst and the amount of addition were changed as shown in Table 1. When the GC measurement was performed, the results shown in Table 1 were obtained.

Claims

The epoxy silane represented by the following general formula (a1), the reaction for synthesizing the silicone monomer represented by the following general formula by reacting acrylic acid or methacrylic acid (a) or (a '), catalyzes the epoxy A method for producing a silicone monomer, which comprises adding at least 25 mol% of silane to the reaction system in an amount not to dissolve the catalyst .

(Here, A represents a siloxanyl group; R ¹ represents hydrogen or a methyl group; X represents an optionally substituted divalent substituent having 1 to 20 carbon atoms.)

The method for producing a silicone monomer according to claim 1 , wherein the catalyst contains an alkali metal atom or an alkaline earth metal atom .

The method for producing a silicone monomer according to claim 1, wherein the catalyst is an alkali metal (meth) acrylate .