ADHESIVE COMPOSITION BASED ON POLYURETHANE RUBBER Russian patent published in 2010 - IPC C09J175/06 A43B9/12 

FIELD: chemistry.

SUBSTANCE: composition contains the following in wt %: 8.5-15.5 Desmocoll 540 (medium-viscosity) urethane rubber with viscosity of not more than 1600 cP, 3.5-4.5 Desmocoll 540 (low-viscosity) urethane rubber with viscosity of not more than 890 cP and 1.3-2.2 Desmocoll 406 urethane rubber, with weight ratio of Desmocoll 540 to Desmocoll 406 rubber equal to 9:1. The composition also contains the following in wt %: 0.1-0.2 malonic acid, 0.05-0.1 tinuvin B75, 1.5-2.0 Desmodur RFE polyisocyanate as a curing agent and a mixture of solvents - the rest. The mixture of solvents contains the following in wt %: 3.8-5.0 toluene, 0.7-0.8 methylethylketone, 1.8-2.2 ethylacetate and acetone - the rest.

EFFECT: said adhesive composition does not require addition of a curing agent before use, which simplifies technology of its application, composition has stable characteristics in the entire life cycle, ensures high strength of the glue joint and enables gluing of articles made from thermoplastic and PVC.

2 tbl