Shin-etsu Chemical Co., Ltd.

Kabushiki Kaisha Toyota Jidoshokki

Yukimasa Aoki

Koichi Higuchi

Motoo Fukushima

Kohei Masuda

Yuya Maruyama

Masahiro Yoshizawa

Koichi Chigita

Hidenori Munekata

Novel UV absorbers of benzotriazine type having a plurality of (meth)acryloxy groups have a UV absorbing capacity and a high solubility in multifunctional (meth)acrylate. By combining the (meth)acrylic functional UV absorber with various binder precursors such as photo-curable multifunctional (meth)acrylate, there are obtained coating compositions having improved crosslinking density, UV absorbing capacity, anti-bleeding property, and shelf stability.

Reactive UV absorber, making method, coating composition, and coated article

A photo-curable coating composition comprising (1) a polyfunctional (meth)acrylic monomer, (2) a photopolymerization initiator, and (3) a specific hydroxyphenyltriazine base UV absorber has high mar resistance and long-term weather resistance.

Photo-curable coating composition and coated article

Novel UV absorbers of benzotriazine type having a plurality of (meth)acryloxy groups have a UV absorbing capacity and a high solubility in multifunctional (meth)acrylate. By combing the (meth)acrylic functional UV absorber with various binder precursors such as photo-curable multifunctional (meth)acrylate, there are obtained coating compositions having improved crosslinking density, UV absorbing capacity, anti-bleeding property, and shelf stability.

Disclosed is a method for repairing a damaged area of a silicone hard-coat layer on an automotive resin glazing substrate by applying an intermediate coating composition (I) to the damaged area and applying a topcoat coating composition (II) to the intermediate coating composition. The intermediate coating composition (I) contains (A) a reactive siloxane compound and (B) silica. The topcoat coating composition (II) contains (C) an alkoxysilane having a UV-absorbing functional group, (D) a multifunctional alkoxysilane, (E) a reactive siloxane compound, (F) colloidal silica, and (G) phosphoric acid. The method forms a coating having the same appearance and physical properties as the underlying silicone hard-coat layer.

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Annaka, Japan

Yukimasa Aoki