METHOD OF PRODUCTION OF THERMALLY-LIGHT-STABILISED POLYCAPROAMIDE THREAD Russian patent published in 2008 - IPC D01F6/60 D01F1/10 C08L77/10 

FIELD: technological processes.

SUBSTANCE: invention is related to technology of production of polycaproamide fibers and may be used in production of cord and technical threads for their stabilisation. Method of production of thermally-light-stabilised polycaproamide thread includes melting of polycaproamide granulated material and thread spinning. Prior to spinning via polymer concentrate multi-component thermal light stabiliser is introduced, which is taken in the following ratio: granulated material "ПА"-6 - 90-92%, multi-component thermal light-stabiliser - 8-10%. The latter consists of the following: - univalent copper salt 0.6-0.7%, potassium halogenide 2.4-5.6%), auxiliary additive: organic component from triazols class, plasticisers on the basis of stearates, phenol anti-oxidant 3.7-5%, optical bleach from class of benzoxazole 0-0.05%.

EFFECT: increase of thermal light resistance of cord and technical threads; preservation of strength properties after impregnation, thermal treatment and vulcanisation and reduction of elementary copper depositing on internal surfaces of technological equipment and draw die sets.

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