Auto-adhering one-component RTV silicone sealant composition utilizing an adhesion promoter

A room temperature vulcanizable silicone rubber composition comprising:

• from about 25 to 90 percent by weight based upon the total weight of the composition of a devolatilized silanol terminated diorgano-siloxane base polymer having a viscosity from about 2,000 to about 250,000 centipoises at 25.degree. C. wherein said organo groups are the same or different and are selected from the group consisting of an alkyl having from 1 to 8 carbon atoms, a cycloalkyl having from 4 to 7 carbon atoms, an alkenyl having from 2 to 8 carbon atoms, an aryl or an alkyl substituted aryl having from 6 to 14 carbon atoms, and a fluoroalkyl having from 1 to 8 carbon atoms;
• from about 0 to about 40 percent by weight based upon the total weight of said composition of a devolatilized diorganopolysiloxane fluid plasticizer terminated with triorganosiloxy groups, said organo groups selected from the group consisting of alkyl having 1 to 8 carbon atoms, cycloalkyl having 4 to 7 carbon atoms, alkenyl having 2 to 8 carbon atoms, aryl or alkyl substituted aryl having 6 to 14 carbon atoms and fluoroalkyl having 1 to 8 carbon atoms said plasticizer having a viscosity from about 50 to about 100,000 centipoises at 25.degree. C.;
• and 0.5 to 3 percent by weight of an adhesion promoter of the formula:
• ##STR7## wherein R.sup.1 and R.sup.6 are independently non-aromatic hydrocarbyl or halohydrocarbyl groups or carboxyalkyl groups having 1 to 10 carbon atoms;
• R.sup.2, R.sup.3, R.sup.7 and R.sup.8 are independently H, hydrocarbyl, halohydrocarbyl or carboxyalkyl having 1 to 10 carbon atoms;
• R.sup.4 and R.sup.5 are divalent hydrocarbyl or halohydrocarbyl groups of 1 to 10 carbon atoms;
• a and e are 0 to 2;
• b and f are 1 to 3;
• q and h are 0 or 1 and a+b+g=f+e+h=3.