Organic silicone resin composition and pre-preg, laminate, copper-clad laminate, and aluminum substrate that use the composition

An aluminum-based copper-clad laminate comprising a copper foil layer and an aluminum-based layer with an insulation layer being coated between the copper foil layer and the aluminum-based layer, wherein the insulation layer is prepared from an organosilicone resin composition, wherein the organosilicone resin composition comprises in parts by weight:

• 100 parts of a condensation type silicone resin;
• 0.0001-2 parts of a catalyst;
• and 0.001-10 parts of an adjuvant, and
• wherein the condensation type silicone resin is any one selected from the group consisting of a methyl silicone resin, a methylphenyl silicone resin and a phenyl silicone resin with R/Si=1.2-1.7 (molar ratio) and Ph/(Me+Ph)=0.2-0.6 (molar ratio), or a mixture of at least two selected therefrom, wherein Ph represents a phenyl group, Me represents a methyl group, and R represents an organic functional group selected from —CH3, -Ph, —OCH3, —OCH2CH3, —H or —OH.