FIELD: chemistry.
SUBSTANCE: invention relates to nitrile rubbers and to an aqueous suspension of carboxyl group-containing, completely or partially hydrogenated nitrile rubber. The aqueous suspension of carboxyl group-containing, completely or partially hydrogenated nitrile rubber includes at most 1 pts.wt emulsifier per 100 pts.wt nitrile rubber. The carboxyl group-containing, completely or partially hydrogenated nitrile rubber has in the suspension average particle diameter in the range of 0.01 mcm to 0.9 mcm, measured by dynamic light scattering, or particle diameter d50, determined by laser diffraction at weight-average intensity in the range of 0.01 mcm to 0.9 mcm.
EFFECT: invention improves stability of the aqueous suspension of nitrile rubber.
17 cl, 7 tbl, 37 ex
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