Preapplied silicone threadlocker and sealant

A curable composition, having utility for adhesively bonding matably engageable structural elements, said curable composition comprising:

• (a) an aqueous emulsion comprising a reactive silicone (meth)acrylate formed as the reaction product of:
• (i) at least one first silane of formula I:
• R.sub.n Si(X).sub.4-n (I)
• wherein:
• each R is independently selected from the group consisting of hydrogen, C.sub.1 -C.sub.12 alkyl, C.sub.6 -C.sub.12 aryl, C.sub.7 -C.sub.18 arylalkyl, C.sub.7 -C.sub.18 alkylaryl, haloalkyl, haloaryl and monovalent ethylenically unsaturated radicals excluding (meth)acryloxy functional groups,
• X is a hydrolyzable functionality, and
• n is an integer of from 0 to 3, and
• (ii) at least one second silane of formula II:
• R.sup.1.sub.m R.sup.2.sub.p Si(X).sub.4-(m+p) (II)
• wherein R.sup.1 is a silicon-bonded (meth)acrylic functional group and each R.sup.2 is independently selected from the group consisting of monovalent ethylenically unsaturated radicals, hydrogen, C.sub.1 -C.sub.12 alkyl, C.sub.6 -C.sub.12 aryl, C.sub.7 -C.sub.18 arylalkyl, and C.sub.7 -C.sub.18 alkylaryl,
• X is a hydrolyzable functionality,
• m is an integer from 1 to 3 inclusive, and
• m+p is an integer from 1 to 3 inclusive;
• and
• (b) a microencapsulated polymerization initiator dispersed in said aqueous emulsion.

An aqueous curable composition, having utility for adhesively bonding matably engageable structural elements, said curable composition comprising:

• a reactive silicone (meth)acrylate emulsified in an aqueous medium;
• a microencapsulated peroxy initiator which is initiatingly effective for cure of the reactive silicone (meth)acrylate;
• and
• a compatible organic or inorganic base, in an amount effective (i) to maintain pH of the composition in the range of from about 2 to about 12, and (ii) to impart to the composition a Brookfield viscosity of from about 60,000 and about 100,000 centipoise when viscosity of the composition is measured at 25.degree. C. on a Brookfield RVF viscometer with a #6 spindle at 2 rpm rotational speed.

An aqueous emulsified, curable composition, having utility for adhesively bonding matably engageable structural elements, said curable composition comprising:

• a reactive silicone (meth)acrylate;
• a polymerizable non-silicone organic (meth)acrylate monomer or oligomer;
• a microencapsulated peroxy initiator which is initiatingly effective for cure of the reactive
• silicone (meth)acrylate;
• and
• a compatible organic or inorganic base for pH and viscosity control of the composition.