OLIGO OXYPROPYLENE ACRYLATES FOR PRIMARY LAYER OF POLYMER COATING OF OPTICAL GUIDES AND SYNTHESIS METHOD THEREOF Russian patent published in 2010 - IPC C07C69/54 C08G63/52 

FIELD: chemistry.

SUBSTANCE: described are oligo oxypropylene acrylates for the primary layer of polymer coating of optical guides based on oligo oxypropylene glycol with molecular weight over 1000 and functionality of 2-3 with fractional conversion of hydroxyl groups into acrylate groups equal to 80-90%. Also described is a method for synthesis of oligo oxypropylene acrylates, involving acrylation of hydroxyl oligomer groups with acryloyl chloride without a solvent or in a medium of a dry organic solvent in the presence of an aliphatic tertiary amine at temperature 10-30°C. The method is distinguished by that, the hydroxyl-containing oligomer used is oligo oxypropylene glycol with molecular weight over 1000 and functionality 2-3 with fractional conversion of hydroxyl groups to acrylate groups equal to 80-90%.

EFFECT: obtaining oligo oxypropyelene acrylates with low viscosity and glass transition point, suitable for making the primary layer of frost-resistant low-modulus polymer coatings of optical guides.

2 cl, 2 tbl, 7 ex