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Priority to KR7402164ApriorityCriticalpatent/KR790000355B1/en
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Publication of KR790000355B1publicationCriticalpatent/KR790000355B1/en
Clear block copolymers with good mech. properties are prepd. by Li alkyl-catalyzed 2-stage suspension polymn. of 70-90 parts aromatic vinyl monomer with 10-30 parts conjugated diene monomer in solvent such as aliphatic hydrocarbon. In the 1st stage, the diene and 10-60% of the aromatic vinyl monomer are polymd., followed by continuous addn. and polymn. of the remaining vinyl monomer at a slow rate in 2nd stage.
KR7402164A1974-04-121974-04-12Process for production of block copolymer
KR790000355B1
(en)