METHOD OF OBTAINING RESIN COMPOSITION Russian patent published in 2008 - IPC C08L23/08 C08L23/16 C08L45/00 C08L25/10 C08L65/00 C08L53/02 

FIELD: chemistry.

SUBSTANCE: present invention pertains to a method of obtaining a resin composition. Description is given of the method of obtaining a resin composition through mixture in a molten mass of 100 weight parts of cyclic olefin polymer (A), whose glass transition temperature ranges from 60 and 200°C, and 1-150 weight parts of elastic polymer (B), with glass transition temperature 0°C or lower. Part of the cyclic olefin polymer (A) is first mixed in a molten mass with elastic polymer (B) and 0.001-1 weight parts of radical polymerisation initiator (C). The remaining cyclic olefin polymer (A) is then added and mixed in the molten mass. The ratio of the quantity of cyclic olefin polymer (A), initially added, to the quantity of the same polymer added later (initially added/added later) ranges from 1:99 to 70:30. Cyclic olefin polymer (A) is divided into two parts and added separately twice, such that, the mixture with a cross-linked structure can be diluted with cyclic olefin polymer (A), without a cross-linked structure. As a result, increase in the viscosity of the molten resin composition can be prevented.

EFFECT: good abrasion resistance and good moulding properties of the molten mass.

15 cl, 1 tbl, 4 ex