Granulated hydrophobic additive for cementitious materials
AssigneeDow Corning Corporation
InventorsDerek Butler, Frederic Gubbels
Life of this patent
Estimating the term…
Abstract
A cementitious material in powder form comprising cement, also comprises sufficient of a granulated hydrophobing additive, which comprises form 5 to 15 parts by weight of an organopolysiloxane component, form 10 to 50 parts by weight of a water-soluble or water-dispersible binder and from 50 to 90 parts by weight of a carrier particle, to give from 0.01 to 5% by weight of the organosiloxane component based on the weight of the cement. The cementitious material displays good hydrophobicity, which may improve upon subsequent wettings of the applied cementitious material to a substrate.
Claims19
A granulated hydrophobing additive comprising the following components:
- A) from 45 to 90 parts by weight of a material selected from the group consisting of (a) ammonium stearate, (b) sodium stearate, (c) lithium stearate, (d) potassium stearate, (e) magnesium stearate, (f) calcium stearate, (g) barium stearate, (h) zinc stearate, (i) aluminum tri-stearate, (j) aluminum di-stearate, (k) aluminum mono stearate, (1) copper stearate, (m) sodium oleate, (n) potassium oleate, (o) calcium oleate, (p) zinc oleate and (q) butyl stearate;
- B) from 15 to 50 parts by weight of a water-soluble or water-dispersible binder and
- C) from 5 to 25 parts by weight of an organopolysiloxane.
A cementitious material in powder form comprising cement and a granulated hydrophobing additive in an amount sufficient to render the cement hydrophobic, said granulated hydrophobing additive comprising the following components:
- A) from 45 to 90 parts by weight of a material selected from the group consisting of (i) palmitic acid salts of ammonia, (ii) stearic acid salts of ammonia, (iii) oleic acid salts of ammonia, (iv) palmitic acid salts of aluminum, (v) stearic acid salts of aluminum, (vi) oleic acid salts of aluminum, (vii) palmitic acid salts of alkali metals, (viii) stearic acid salts of alkali metals, (ix) oleic acid salts of alkali metals, (x) palmitic acid salts of alkaline earth metals, (xi) stearic acid salts of alkaline earth metals, (xii) oleic acid salts of alkaline earth metals, (xiii) palmitic acid salts of transition metals, (xiv) stearic acid salts of transition metals, (xv) oleic acid salts of transition metals, (xvi) mixtures of (i) to (xv), (xvii) organic esters of palmitic acid, (xviii) organic esters of stearic acid, (xix) organic esters of oleic acid, and (xx) mixtures of (xvii) to (xix);
- B) from 15 to 50 parts by weight of a water-soluble or water-dispersible binder and
- C) from 5 to 25 parts by weight of an organopolysiloxane.
A granulated hydrophobing additive comprising the following components:
- A) from 45 to 90 parts by weight of a material selected from the group consisting of (i) palmitic acid salts of ammonia, (ii) stearic acid salts of ammonia, (iii) oleic acid salts of ammonia, (iv) palmitic acid salts of aluminum, (v) stearic acid salts of aluminum, (vi) oleic acid salts of aluminum, (vii) palmitic acid salts of alkali metals, (viii) stearic acid salts of alkali metals, (ix) oleic acid salts of alkali metals, (x) palmitic acid salts of alkaline earth metals, (xi) stearic acid salts of alkaline earth metals, (xii) oleic acid salts of alkaline earth metals, (xiii) palmitic acid salts of transition metals, (xiv) stearic acid salts of transition metals, (xv) oleic acid salts of transition metals, (xvi) mixtures of (i) to (xv), (xvii) organic esters of palmitic acid, (xviii) organic esters of stearic acid, (xix) organic esters of oleic acid, and (xx) mixtures of (xvii) to (xix);
- B) from 15 to 50 parts by weight of a water-soluble or water-dispersible binder and
- C) from 5 to 25 parts by weight of an organopolysiloxane.
Dependencies are inferred from the claim text.