Silicone-polybutylene blends
AssigneeDow Corning Corporation
InventorDale E. Hauenstein
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Abstract
The present invention relates to a fluid comprising a compatible blend of (A) a polydimethylsiloxane and (B) a polybutylene wherein the viscosities of these two components are substantially identical such that the viscosity of the blend is less than the viscosity of either component (A) or (B), each viscosity being measured at the same operating temperature and pressure. This synergistic viscosity reduction is enhanced when particular moieties are present in the polydimethylsiloxane and/or polybutylene components and as the polydispersity of the polydimethylsiloxane is increased.
Claims19
A composition comprising a compatible blend of (A) a polydimethylsiloxane having an absolute viscosity V of no greater than 10,000 cP at 25.degree. C.;
- and (B) a polybutylene having a number average molecular weight of about 100 to about 3,000 and an absolute viscosity substantially identical with V, wherein the ratio of said polydimethylsiloxane (A) to said polybutylene (B) is such that the absolute viscosity of said blend is less than the absolute viscosity of either component (A) or (B), all of the viscosities being measured at the same operating temperature and pressure.
Dependencies are inferred from the claim text.