TY - BOOK TI - Testing of rubber and elastomers. Quantitative determination of polymers: Determination of the content of butyl rubber and polyisobutylene PY - 1977/// KW - Butyl rubber KW - Elastomers KW - Polyisobutylene KW - Polymers KW - Quantitative determination N1 - Standard number: DIN 53 621 Part 8 ER -