STRENGTH-OPTIMISED POLYMERS WITH OXYALKYLENE BRANCHES Russian patent published in 2009 - IPC C08L71/02 C08G18/12 C08G18/48 C09D175/04 C09J175/04 

FIELD: chemistry.

SUBSTANCE: composition contains at least one cross-linked polymer with a number of functional groups which can be cross-linked under suitable conditions, which can react with other and which can be either isocyanate groups, or silyl groups, or a combination of both, or with a suitable cross-linking agent. The composition contains either (a) a cross-linked polymer, main polymer chain of which includes at least two different oxyalkylene branches OX¹ and OX², or (b) first cross-linked polymer, main polymer chain of which includes at least a first branch OX¹ and at least a second cross-linked polymer, main polymer chain of which includes at least, a second branch OX², or (c) a mixture of cross-linked polymers (a) and (b), where the mass ratio of OX¹ to OX² ranges from 10:90 to 90:10. Described also are cross-linked polymer compositions, obtained by reacting (A) isocyanate component and either (B) a mixture of two or more polyols, where at least two polyols have branches OX¹ and OX², or (C) polyol with OX¹ branches and (D) polyols with OX² branches, respectively.

EFFECT: improved physical and mechanical properties, good outward appearance and good adhesion to smooth inert surfaces.

12 cl, 14 ex