METHOD OF MODIFYING POLYESTER FIBRE Russian patent published in 2013 - IPC D06M13/322 D06M13/453 D06M13/50 D06M15/41 D06M11/59 

FIELD: chemistry.

SUBSTANCE: method involves modifying polyester fibres by treating, at room temperature, with a composition which contains 20.00-25.00 pts.wt methylphosphite borate, 75.00-80.00 pts.wt water, 20.00-25.00 pts.wt ammonia and 0.30-0.75 pts.wt phenol-formaldehyde resin SF-282. Treatment is carried out for 1 minute at 20°C, followed by temperature control at 150°C for 30 minutes.

EFFECT: high fire-resistance, improved physical and mechanical properties and heat-resistance of polyester fibre, considerable simplification of the method of modifying said fibre.

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