METHOD OF OBTAINING GLUE COMPOSITION FOR ADHESIVE TAPES, CONTAINING DICHLOROCYCLOPROPANATED 1,2-POLYBUTADIENES Russian patent published in 2015 - IPC C09J127/24 C09J7/02 C09J193/04 

FIELD: chemistry.

SUBSTANCE: invention relates to the field of obtaining glue compositions, used in the production of adhesive polyvinylchloride (PVC) tapes, intended for wrapping gas- and oil-pipelines as an insulating and protective coating, as well as for carrying out repair works. The glue composition includes a perchlorovinyl resin, a plasticiser and an adhesion-improving additive. The composition additionally contains dichlorocyclopropanated 1,2-polybutadiene or dichlorocyclopropanated syndiotactic 1,2-polybutadiene in an amount from 1 to 15 wt.p. Dichlorocyclopropanated 1,2-polybutadiene with the weight average molecular weight from 8000 to 120000 is used. A degree of dichlorocyclopropanation in dichlorocyclopropanated 1,2-polybutadiene constitutes from 2.5 to 35.9%.

EFFECT: increased adhesion of an adhesive PVC tape to a metal surface.

3 cl, 1 tbl, 12 ex