Patent ID: 6881785

Claim:
An aqueous dispersion comprising water and an amorphous unsaturated polyester resin, wherein the amorphous unsaturated polyester resin comprises bonded units of (i) an alcohol component, (ii) from 20 to 95 mol % of an α,β-unsaturated carboxylic acid component, and from 0 to 75 mol % of a further carboxylic acid component, and (iii) from 5 to 40 mol % of trimellitic acid or anhydride of trimellitic acid, wherein the alcohol component comprises from 10 to 100 mol % of a Dicidol mixture comprising the isomeric compounds 3,8-bis(hydroxymethyl)tricyclo[5.2.1.0 2,6 ]decane, 4,8-bis(hydroxymethyl)tricyclo[5.2.1.0 2,6 ]decane, and 5,8-bis(hydroxymethyl)tricyclo[5.2.1.0 2,6 ]decane, wherein each isomer is present in a fraction of from 20 to 40 mol % based on the total amount of the Dicidol mixture, and the sum of the three isomers is from 90 to 100 mol % of the Dicidol mixture, and wherein the aqueous dispersion has a) a nonvolatiles content of from 20% to 60% by weight, b) a solvent content of from 0 to 60% by weight, c) a pH of between 5.0 and 9.5, and d) a viscosity at 20° C. of from 20 to 500 mPas.