Patent ID: 7612158

Claim:
An equilibrated organopolysiloxane obtained by a process comprising reacting at least two organosiloxanes in the presence of a macrocrosslinked polystyrene divinylbenzene based cation exchange resin containing sulfonic acid groups at temperature of about 10° C. to about 120° C., optionally in the presence of a solvent, and isolating the equilibrated organosiloxanes, wherein the said macrocrosslinked cation exchange resin has (a) a maximum uniformity coefficient of 1.6; (b) a bead size of 16-40 U.S. mesh; (c) an effective bead size of 0.50-0.62 mm; (d) a fines content of 0.5% based on the weight of the resin; (e) a density of 1.15 g/mL; (f) a water retention of 57-63%; (g) a surface area of about 33 m 2 /g; (h) a pore volume of about 0.45 cm 3 /g; (i) a pore diameter of 41 nm; (j) stability over a temperature range of 34-284° F.; (k) a maximum storability of 2 years; and (l) a storability temperature range of 34-104° F.