Patent ID: 6159390
Filing Date: 2000-12-12
Classification: C01P,C08K,C09C,C09D

Abstract:
A suspension of hydrophilic mineral fillers, treated with a treatment agent, in a polyol, wherein a dry weight concentration of said treated hydrophilic mineral fillers is up to 80 wt % of the suspension, and wherein the treatment agent for said hydrophilic mineral fillers is present in an amount of 0.5 to 3 wt. % based upon the weight of the hydrophilic mineral fillers, andwherein said treatment agent has the formula (I): ##STR3## wherein: R.sub.1 is H, C.sub.8 -C.sub.40 alkyl, C.sub.6 -C.sub.40 aryl, alkylaryl, or arylalkyl;R.sub.2 is C.sub.8 -C.sub.40 alkyl, C.sub.6 -C.sub.40 aryl, alkylaryl or arylalkyl;X is --CH.sub.2 --CH.sub.2 --;Y is --CH(CH.sub.3)--CH.sub.2 -- or --CH.sub.2 --CH(CH.sub.3)--;(m+n) is from 0 to 30, with m.ltoreq.30 and n.ltoreq.30;(p+q) is from 0 to 30, with p.ltoreq.30 and q.ltoreq.30;wherein said mineral fillers remain hydrophilic and absorb polyol in an amount that is at least 15% by weight less, based on the total weight of the treated mineral fillers, than the amount absorbed by non-treated mineral fillers; andwherein a homogeneity factor (HF) is less than 0.2; said homogeneity factor being measured using a 325 mesh size sieve in accordance with the NF X11-501 AFNOR standard, (HF) being defined as: ##EQU12##