METHOD FOR PRODUCTION OF FILM-FORMING COPOLYMER Russian patent published in 1996 - IPC

FIELD: petrochemical industry. SUBSTANCE: vat residue of styrene rectification (VRSR) are affected by heat copolymerization together with vat residue of product being prepared by chemical purification of isoprene against cyclopentadiene (oligocyclohexanones). Said purification is carried out with the help of cyclohexanone. Mass ratio of VRSR and oligocyclohexanones is 80-95:20-5. Content of ingredients (mass %) is as follows: oligocyclohexanol 0.8-1.6, dipentene 1.0-2.0, fulvenes 3.0-5.0, cyclohexanone 8.8-10.2, oligomers of cyclohexanones 80.5-85.0. EFFECT: improves efficiency of method, increases impact strength of desired copolymer. 2 tbl