Patent ID: 8017712

Claim:
A process for producing a solid solventless MQ resin comprising the steps of (1)(A) feeding at least one MQ resin dispersed in a volatile solvent into an extrusion device, where each MQ resin has the general formula (I) R 1 n (R 2 O) b SiO (4-n-b/2) where each R 1 is monovalent and independently selected from hydrogen, alkyl, alkenyl, oximo, aryl, carbinol, anhydride, epoxy, carboxyl, ether, polyether, amide, and alkyl amino groups, which R 1 groups may be the same or different, with the proviso that at least sixty mole percent of R 1 groups are methyl, R 2 is hydrogen or a monovalent C1 to C4 alkyl group, on average n is from 1.1 to 1.6, and b is such that group (R 2 O) is 1 to 10 weight percent of the MQ resin, said MQ resins having a number average molecular weight (Mn) between 1,500 and 7,000; (2) removing the volatile solvent to form a solid solventless MQ resin; and (3) recovering the solid solventless MQ resin, provided steps (1) to (3) are completed without the addition of a linear silicone fluid having a general formula (II): (R′ 3 SiO 1/2 ) x (R′ 2 SiO 2/2 ) y (R′SiO 3/2 ) z where x and y are positive numerical values and z is 0 or a positive numerical value with the provisos that x+y+z=1, y/(x+y+z)>0.8 and R′ is a functional or nonfunctional, substituted or unsubstituted organic radical, and the DP is greater than 10.