AQUEOUS POLYURETHANE DISPERSIONS AND USE THEREOF AS ADHESIVE Russian patent published in 2010 - IPC C08G18/10 C08G18/42 C09J175/04 

FIELD: chemistry.

SUBSTANCE: said dispersions contain ionic or potentially ionic and nonionic groups. Ionic or potentially ionic groups are entered into a polymer skeleton through a difunctional polyol component whose molecule also contains 0.5-2 moles of sulpho-acid or sulphonate groups, while nonionic groups are entered through one or more compounds which are monofunctional in polyaddition reactions of isocyanates, containing at least 50 wt % ethylene oxide and having molecular weight of at least 400 Da. The dispersions also contain 0.1-7.5 wt % emulsifying agent which is not chemically bonded with the polymer, where the said emulsifying agent is nonionic, liquid at room temperature and has hydrophilic-lipophilic balance ranging from 12 to 18.

EFFECT: proposed aqueous polyurethane dispersions are characterised by low activation temperature, high initial heat resistance, high thermal stability and excellent adhesion to different bases.

3 cl, 4 ex, 1 tbl