CROSS-LINKABLE COMPOSITION FOR ABRASIVE ARTICLE, METHOD FOR CROSS-LINKING SAID COMPOSITION AND CROSS-LINKED RESIN Russian patent published in 2011 - IPC C08L61/06 C08L61/24 C08L61/28 B24D3/28 

FIELD: chemistry.

SUBSTANCE: cross-linkable composition contains formaldehyde resin and a polythiol compound. The formaldehyde resin is cross-linked through reaction of a polythiol cross-linking agent with the formaldehyde resin. The cross-linked resin is obtained from phenol-formaldehyde, melamine-formaldehyde and urea-formaldehyde resin during reaction with a polythiol compound. The latter contains at least three thiol groups, where polythiol groups make up at least 1 wt % of the cross-linked resin. Compared to the same resin without polythiol, the cross-linked resin meets at least one criterion selected from high transparency, high storage modulus, high loss modulus and low ratio of loss and storage moduli tanδ.

EFFECT: obtaining abrasive articles with longer service life and improved mechanical properties, which ensure reduced cracking and accidental scratches, high cutting force.

7 cl, 9 dwg, 4 tbl, 8 ex