Patent ID: 9212095
Filing Date: 2015-12-15
Classification: C04B

Abstract:
1. A cementitious composition comprising hydraulic cement, water, and a hyper-branched polyether surfactant, optionally wherein the hyper-branched polyether surfactant is in the range of about 0.0001% to about 0.02% by weight of cementitious material; wherein the hyper-branched polyether surfactant comprises a compound or a mixture of compounds which are reaction products of components comprising: at least one compound a) of formula I: wherein each X group is a halogen atom or one X group is a halogen atom and two X groups represent an epoxy oxygen atom, which is attached to two adjacent carbon atoms in the R 1 group to form an epoxy group, and R 1 is an alkanetriyl group containing from 3 to 10 carbon atoms; and at least one compound b) of formula IIa: wherein R 2 is an organic group containing from 1 to 36 carbon atoms, n is a number of from 0 to 200, Y is —OH, —NHR′ wherein R′ is hydrogen or a C 1 -C 4 alkyl group, and each OA group is independently an ethyleneoxy, 1,2-propyleneoxy, or 1,2-butyleneoxy group, provided that when Y is an amine group, n is at least 1; or of formula IIb: wherein R 2 is hydrogen or an organic group containing from 1 to 36 carbon atoms, Z is —O—, or —NR 4 —, where R 4 is hydrogen or a C 1-18 alkyl group, each OA group is independently an ethyleneoxy, 1,2-propyleneoxy, or 1,2-butyleneoxy group, n is a number of from 0 to 200, and Y 1 is H, or Y 1 is mercapto, amino, or C 1-6 alkylamino in place of a terminal —OH group in which case n is at least 1.