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US 8,148,565 B2Granted
Method of manufacturing an organic silicon compound that contains a methacryloxy group or an acryloxy group
AssigneeDow Corning Toray Co., Ltd.
InventorKeiji Wakita
Life of this patent
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Abstract
A method of manufacturing an organic silicon compound that contains a methacryloxy group or an acryloxy group is characterized by the fact that manufacturing or conducting purification by distillation is carried out in the presence of a phenothiazine derivative having a molecular weight equal to or higher than 240. A stable composition comprises the organic silicon compound that contains a methacryloxy group or an acryloxy group and the phenothiazine derivative having a molecular weight equal to or higher than 240. The phenothiazine derivative is used in an amount sufficient to stabilize the organic silicon compound.
Claims6
A method of manufacturing an organic silicon compound that contains a methacryloxy group or an acryloxy group,
- wherein said organic silicon compound that contains a methacryloxy group or an acryloxy group is a compound represented by the following formula (3):
- CH2═C(R5)COO—R6—Si(R7)3-p(R8)p (3)
- (where R5 is a hydrogen atom or a methyl group, R6 is a bivalent organic group, R7 is an alkyl group, and R8 is either a halogen atom or is selected from an alkoxy group or an alkyloxyalkoxy group;
- and “p” is an integer from 1 to 3),
- the method being characterized by the fact that manufacturing or conducting purification by distillation is carried out in the presence of a phenothiazine derivative having a molecular weight equal to or higher than 240,
- wherein said phenothiazine derivative is a compound selected from the following:
- an alkyl-substituted phenothiazine with said alkyl group having four or more carbon atoms, dibenzophenothiazine, an acyl-substituted phenothiazine with said acyl group having 2 to 18 carbon atoms, an N,N′ phenothiazine dimer, a compound represented by formula (1) given below:
- (where R1 is an aralkyl group having 7 to 18 carbon atoms, and R2 is selected from a hydrogen atom or an alkyl group having 1 to 18 carbon atoms, an aralkyl group having 7 to 18 carbon atoms, and an acyl group having 2 to 18 carbon atoms;
- “m” and “n” are integers from 0 to 2, and where the following condition is satisfied:
- m+n≧1), and a compound of the following formula (2):
- (where R2 is the same as defined above, R3 is either a hydrogen atom or is selected from an alkyl group having 1 to 18 carbon atoms, an aralkyl group having 7 to 18 carbon atoms, and an acyl group having 2 to 18 carbon atoms;
- R4 is either a hydrogen atom or is selected from an alkyl group having 1 to 18 carbon atoms or an acyl group having 2 to 18 carbon atoms;
- X is a group selected from a methylene group, α-methylmethylene group, and α-phenylmethylene group;
- and “r” is a number represented by an average value between 1 and 5.
11 more elements
A stable composition comprising an organic silicon compound that contains a methacryloxy group or an acryloxy group,
- wherein said organic silicon compound that contains a methacryloxy group or an acryloxy group is a compound represented by the following formula (3):
- CH2═C(R5)COO—R6—Si(R7)3-p(R8)p (3)
- (where R5 is a hydrogen atom or a methyl group, R6 is a bivalent organic group, R7 is an alkyl group, and R8 is either a hydrogen atom or is selected from an alkoxy group or an alkyloxyalkoxy group;
- and “p” is an integer from 1 to 3),
- and a phenothiazine derivative having a molecular weight equal to or higher than 240 and used in an amount sufficient to stabilize the aforementioned organic silicon compound,
- wherein said phenothiazine derivative is a compound selected from the following:
- an alkyl-substituted phenothiazine with said alkyl group having four or more carbon atoms, dibenzophenothiazine, an acyl-substituted phenothiazine with said acyl group having 2 to 18 carbon atoms, an N,N′ phenothiazine dimer, a compound represented by formula (1) given below:
- (where R1 is an aralkyl group having 7 to 18 carbon atoms, and R2 is selected from a hydrogen atom or an alkyl group having 1 to 18 carbon atoms, an aralkyl group having 7 to 18 carbon atoms, and an acyl group having 2 to 18 carbon atoms;
- “m” and “n” are integers from 0 to 2, and where the following condition is satisfied:
- m+n≧1), and a compound of the following formula (2):
- (where R2 is the same as defined above, R3 is either a hydrogen atom or is selected from an alkyl group having 1 to 18 carbon atoms, an aralkyl group having 7 to 18 carbon atoms, and an acyl group having 2 to 18 carbon atoms;
- R4 is either a hydrogen atom or is selected from an alkyl group having 1 to 18 carbon atoms or an acyl group having 2 to 18 carbon atoms;
- X is a group selected from a methylene group, α-methylmethylene group, and α-phenylmethylene group;
- and “r” is a number represented by an average value between 1 and 5.
11 more elements
Dependencies are inferred from the claim text.