medium molecular weight polyisobutylene applied for industry, such as adhesives, sealants, lubricants ... away from toxic goods.Packing and TransportationNon-hazardous chemicals, medium molecular weight polyisobutylene in 20kg carton with anti-adhesive paper or ... barrel. We are offering supply polyisobutylene with the viscosity average molecular weight from 30000 to 70000, capable to meet various demands ...