SINGLE-COMPONENT ADHESIVE COMPOSITION FOR WOODWORKING AND METHOD OF BONDING THE SUBSTRATES Russian patent published in 2007 - IPC C09J151/00 

FIELD: single-component adhesive compositions for woodworking.

SUBSTANCE: proposed composition includes: (a) emulsion containing polymer produced at several stages; first-stage polymer is characterized by magnitude of T_g from minus 20°C till 90°C; first-stage polymer contains approximately 0.5 to 0.3 mass-% of cross-linking monomer per mass of first-stage monomer; first-stage polymer is selected from group consisting of homopolymers, copolymers and their mixtures and second-stage polymer characterized by magnitude of T_g from 40°C to 140°C ; second-stage polymer is selected from group consisting of homopolymers, copolymers and their mixtures; (b) cross-linking agent on base of formaldehyde and (c)catalyst. Proposed adhesive composition satisfies the requirements of DIN EN 204 Test Method after storage for at least 30 days in hermetically closed container at temperature of 23C. Specification describes method of bonding the substrates.

EFFECT: enhanced stability; adequate waterproofness; compliance with industrial standards.

24 cl, 19 ex