Polynuclear microcapsules

1. A process for preparing a suspension of polynuclear microcapsules, said polynuclear microcapsules comprising an outer-capsule wherein the outer-capsule comprises an outer-shell and a plurality of inner-capsules, and wherein each of the inner-capsules comprises an inner-shell and an aqueous phase core, and wherein the outer-shell and the inner-shell further comprise a silica or an organofunctional silica, comprising the following steps:

I) mixing

A) a first emulsifier comprising a silicone polyether having the formula I or II:

 wherein R1 is a (C 1 -C 6 )alkyl group,

x is an integer of 1-1000, y is an integer of 1-500, z is an integer of 1-500,

R2 represents the group —(CH 2 ) a O(C 2 H 4 O) b (C 3 H 6 O) c R3;

a is an integer of 3-6; b is an integer of 1-40; c is an integer of 0-40; and

R3 is hydrogen, a methyl group, or an acyl group

B) an alkoxysilane,

C) a hydrophilic active,

with water to form an emulsion having a continuous phase and a disperse phase wherein the alkoxysilane is in the continuous phase;

II) admixing to the emulsion having the alkoxysilane in the continuous phase

D) a second emulsifier

to form a multiple phase emulsion having multiple oil/water interfaces; and

III) polymerizing the alkoxysilane at the oil/water interfaces of the multiple phase emulsion to form the suspension of polynuclear microcapsules.

2. The process of claim 1 further comprising the step of recovering the polynuclear microcapsules from the suspension.

3. The process of claim 1 wherein the alkoxysilane is tetraalkoxysilane.

4. The process of claim 1 wherein the second emulsifier is a cationic surfactant, a non-ionic surfactant, amphoteric surfactant, or any combination the surfactants.

5. The process of claim 1 wherein the second emulsifier is a polymeric surfactant or particle.

6. The process of claim 5 wherein the polymeric surfactant is an ethylene glycol propylene glycol copolymer.

7. The process of claim 5 wherein the particle is fumed silica, colloidal silica or synthetic clay.

8. The process of claim 1 wherein the weight percent of components A, B and C in step I range from;

A) 0.1 to 30 weight percent,

B) 1 to 99 weight percent,

C) 1 to 99 weight percent.

9. The process of claim 8 wherein the weight percent of component D ranges from 0.1 to 20 weight percent in the multiple phase emulsion of step II.

10. The process of claim 1 wherein x is 396, y is 4, a is 3, b is 18, c is 18 and d is 18.