Abstract:
1,190,204. Thixotropic elastomeric compositions. STANDARD OIL CO. 12 June, 1967 [13 June, 1966], No. 26926/67. Heading C3P. [Also in Division C1] A thixotropic composition comprises a mixture of (A) an elastomer emulsion of 50-70 parts by wt. of elastomer solids in 30-50 parts of water and having a viscosity of at least 5000 cp.; and (B) 5-70 parts of liquid α- methylstyrene polymer/100 parts of (A). The elastomer may be polyisobutylene or butyl rubber. The composition may be mixed with hydraulic cement, e.g. portland cement, and used as a sealing composition.