Curing composition and method for impregnating wood

A method for impregnating wood comprising the steps of:

• impregnating wood with a curing composition;
• and curing said curing composition thus impregnated,
• said curing composition comprising a reaction product represented by formula (1) obtained by reacting an alkylene oxide adduct of a hydrocarbon polyol and (meth)acrylic acid:
• ##STR4## wherein R.sup.10 represents a residual group of a hydrocarbon polyol having from 3 to 15 carbon atoms and (c1+d1) hydroxyl groups;
• R.sup.11 represents an alkylene group having from 2 to 4 carbon atoms;
• R.sup.12 represents an alkylene group having from 2 to 4 carbon atoms;
• R.sup.13 represents a hydrogen atom or a methyl group;
• a1 represents a number of from 0 to 10;
• b1 represents a number of from 0 to 10;
• c1 represents a number of not less than 1.5;
• and d1 represents a number of not less than 0.5;
• provided that (a1+b1) is not less than 1.