초록 ▼

The invention relates to self-adhesive addition-crosslinking silicone compositions which comprises (A) diorganopolysiloxanes, (B) organohydrogenpolysiloxanes containing less than 20 SiH bonded hydrogen atoms and less than 12% aryl groups, (C) organosilicon compounds having epoxy groups and hydrolyza

The invention relates to self-adhesive addition-crosslinking silicone compositions which comprises (A) diorganopolysiloxanes, (B) organohydrogenpolysiloxanes containing less than 20 SiH bonded hydrogen atoms and less than 12% aryl groups, (C) organosilicon compounds having epoxy groups and hydrolyzable groups and (D) a hydrosilylation catalyst. The compositions are transparent to translucent, exhibit good compositional comparability, and cure to form strongly adhesive elastomers with good physical properties.

대표청구항 ▼

1. A self-adhesive addition-crosslinking silicone composition, comprising (A) diorganopolysiloxane(s) of the general formula (1) R 1aR2bSiO(4−a−b)/2  (1),  in which R1is a hydroxyl radical or a monovalent, optionally halogen-substituted C1-20hydrocarbon radical option

1. A self-adhesive addition-crosslinking silicone composition, comprising (A) diorganopolysiloxane(s) of the general formula (1) R 1aR2bSiO(4−a−b)/2  (1),  in which R1is a hydroxyl radical or a monovalent, optionally halogen-substituted C1-20hydrocarbon radical optionally containing O, N, S or P atoms and free of aliphatically unsaturated groups,R2is a monovalent, aliphatically unsaturated, optionally halogen-substituted C2-10hydrocarbon radical optionally containing O, N, S or P atoms,b has a value from 0.003 to 2,with the proviso that 1.5g≧0, 4>h>0, 4>i>0, 4≧(h+i)>0 and 4≧(g+h+i); and (D) a hydrosilylation catalyst. 2. The self-adhesive addition-crosslinking silicone composition of claim 1, wherein the viscosity of the component (B) measured at 25° C., is 2 mPa·s to 1 Pa·s.3. A process for the preparation of self-adhesive addition-crosslinked silicone elastomers, in which the self-adhesive addition crosslinking silicone compositions of claim 1 is heated to 30° C. to 250° C.4. A process for the preparation of self-adhesive addition-crosslinked silicone elastomers, in which the self-adhesive addition-crosslinking silicone compositions of claim 2 is heated to 30° C. to 250° C.5. A self-adhesive addition-crosslinked silicone elastomer obtained by the process of claim 3.6. A process for bonding an addition-crosslinkable silicone composition to a substrate, in which the self-adhesive addition-crosslinkable silicone compositions of claim 1 is applied to the substrate and crosslinked by heating to 30° C. to 250° C.7. A process for bonding an addition-crosslinkable silicone composition to a substrate, in which the self-adhesive addition-crosslinkable silicone compositions of claim 2 is applied to the substrate and crosslinked by heating to 30° C. to 250° C.8. A composite material obtained by the process of claim 6.9. A composite material obtained by the process of claim 7.