| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a silicone resin composition providing a cured product having high hardness and excellent scratch resistance, and also having excellent crack resistance, adhesiveness, water resistance, heat resistance and weather resistance, and effective as a coating agent forming a protective coated film on the surface of an organic resin base material or the like. <P>SOLUTION: The silicone resin composition contains the following silicone resin, a curing catalyst and a solvent as essential components: the silicone resin is obtained by co-hydrolyzing and condensing 1-50 Si-mol% tetraalkoxysilane, 50-99 Si-mol% trialkoxysilane and 0-10 Si-mol% dialkoxysilane by using <100 pts.wt. water based on 100 pts.wt. total of the alkoxy silanes, has≥1,500 number average molecular weight, and is regulated so that the content of a unit represented by R<SP>1</SP>SiO<SB>3/2</SB>may be 30-80 mol% and the total content of units represented by R<SP>1</SP>SiO<SB>2/2</SB>(OX) and R<SP>1</SP>SiO<SB>1/2</SB>(OX)<SB>2</SB>may be 20-70 mol% in a nuclear magnetic resonance spectrometry. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
