(Meth)acrylic-modified siloxane compound
AssigneeShin-Etsu Chemical Co., Ltd.
InventorTomoyuki Goto
Life of this patent
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Abstract
The present, invention aims to provide an additive which has a reactive group with good active energy ray curability. When incorporated in a paint, the additive does not bleed over time and imparts an excellent leveling property and a defoaming property to the paint. There is provided a (meth)acrylic-modified siloxane compound of formula (a1) which has, as a branch and, optionally, at one or both of the terminals, of a linear polysiloxane backbone, a specific number of moieties having a (meth)acryloyl group at a terminal and a (poly)oxyalkylene structure of the formula —(CaH2aO)b—. Also provided is an additive for paints, comprising said (meth)acrylic-modified siloxane compound.
Claims15
A (meth)acrylic-modified siloxane compound of the following formula (a1):
- wherein A is a group of the following formula (a2):
- wherein R30 is a hydrogen atom or a methyl group;
- a is an integer of 2 to 5;
- b is an integer of 1 to 20;
- and c is an integer of 2 to 15;
- wherein d is an integer of 1 to 500;
- e is an integer of 1 to 30;
- R31 and R39 are, independently from each other, an alkoxy group, A as defined above, or a substituted or unsubstituted monovalent hydrocarbon group having no (meth)acrylic group;
- R32-R38 are, independently from each other, a substituted or unsubstituted monovalent hydrocarbon group having no (meth)acrylic group, or an alkoxy group, with the proviso that e is an integer of 3 to 30 when none of R31 and R39 is A, and the number of A is 5 to 20 per molecules in the formula (a1).
A (meth)acrylic-modified siloxane compound of the following formula (a1):
- wherein A is a group of the following formula (a2):
- wherein R30 is a hydrogen atom or a methyl group;
- a is an integer of 2 to 5;
- b is an integer of 1 to 20;
- and c is an integer of 2 to 15;
- wherein d is an integer of 1 to 500;
- e is an integer of 1 to 30;
- R31 and R39 are each A as defined above;
- R32-R38 are, independently from each other, a substituted or unsubstituted monovalent hydrocarbon group having no (meth)acrylic group, or an alkoxy group.
Dependencies are inferred from the claim text.