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US 5,847,036 AGranted
(Meth)acrylic molding material and a production process thereof
AssigneeNippon Shokubai Co., Ltd.
InventorsKouji Takabatake, Yuichi Kawata, Shigeo Otome
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AssigneeNippon Shokubai Co., Ltd.
InventorsKouji Takabatake, Yuichi Kawata, Shigeo Otome
Estimating the term…
The present invention provides a (meth)acrylic molding material comprising (A) a (meth)acrylic polymer obtained by polymerization of monomer components essentially containing a monomer having (a) carboxyl group(s) and an alkyl (meth)acrylate monomer, and (B) one or more kinds of monomers containing a vinyl group, wherein 30-600 parts by weight of aluminum hydroxide and 0.01-10 parts by weight of a succinic acid derivative are added for 100 parts by weight of the total of said polymer (A) and monomer (B). The (meth)acrylic molding material is thickened by aluminum hydroxide and the thickening behavior is controlled by the succinic acid derivative to prevent the viscosity from increasing with time, accordingly, the (meth)acrylic molding material shows good workability.
A (meth)acrylic molding material comprising an acrylic syrup comprising (A) a (meth)acrylic polymer obtained by polymerizing monomer components comprising a vinyl monomer having (a) carboxyl group(s) and an alkyl (meth)acrylate monomer, and (B) one or more monomers containing a vinyl group, wherein aluminum hydroxide in an amount of from 30 to 600 parts by weight and a succinic acid derivative in an amount of from 0.01 to 10 parts by weight are added for 100 parts by weight of the total of said (meth)acrylic polymer(A) and monomer (B), and said succinic acid derivative is a succinic acid derivative having from 8 to 30 total carbon atoms.
Dependencies are inferred from the claim text.