Surface-active composition based on non-ionic surfactants

Claim 1

Non-ionic surface active composition useful for washing and degreasing containing a mixture of: (a) at least one non-ionic surface-active compound A of general formula: R--(OCH 2 CH 2 ) n OH in which R is a C 6 to C 9 alkyl group and n is greater than 6 and up to 15 and, (b) at least one non-ionic surface-active compound B of the general formula: R'--(OCH 2 CH 2 ) m OH in which R' is a C 16 to C 20 alkyl group and m is from 6 to 15, and wherein more than half the groups R and R' taken separately are linear, characterized in that said composition is solid at ambient temperature and in that it includes: (i) 2 to 70% by weight of surface-active compound A having an ethoxylation rate of at least 64.7% but less than 72.5% by weight of this compound and 98 to 30% by weight of surface-active compound B which has an ethoxylation rate of from about 47% to less than 62.5% by weight of this compound: or (ii) 2 to 70% by weight of surface-active compound A having an ethoxylation rate of at least 64.7% but less than 72.5% by weight of this compound and 98 to 30% by weight of surface-active compound B having an ethoxylation rate of at least 62.5% and up to about 73.1% by weight of this compound; or (iii) 10 to 90% by weight of surface-active compound A having an ethoxylation rate of at least 72.5% and up to about 86.6% by weight of this compound and 90 to 10% by weight of surface-active compound B having an ethoxylation rate of from about 47% to less than 62.5% by weight of this compound; or (iv) 10 to 90% by weight of surface-active compound A having an ethoxylation rate of at least 72.5% and up to about 86.6% by weight of this compound and 90 to 10% by weight of surface-active compound B having an ethoxylation rate of at least 62.5% and up to about 73.1% by weight of this compound.