Patent ID: 9540287
Date: 2017-01-10
CPC Classifications: B29D,C04B,E04B,Y10T

Claim:
1. A foamed slurry for forming a product, the slurry comprising: (a) water; (b) cementitious particles, wherein the cementitious particles comprise stucco, calcium sulfate dihydrate, coated calcium sulfate dihydrate, or combinations thereof; (c) air bubbles with walls formed by the water; and (d) surface modifying agent effective to modify a surface of at least some of the cementitious particles, such that the modified particles stabilize the air bubbles sufficiently to form air voids in the product, wherein the surface modifying agent comprises one or more gallate compound of Formula I: wherein R is selected from the group consisting of C 1 -C 10 alkyl, C 1 -C 10 alkenyl, C 1 -C 10 alkynyl, C 3 -C 12 cycloalkyl, C 3 -C 12 cycloalkenyl, or C 6 -C 10 aryl, wherein the alkyl, alkenyl, and alkynyl groups are branched or unbranched, and optionally substituted with one or more substituents selected from the group consisting of halo, alkoxy, ester, or substituted amide, wherein the foamed slurry has a pH of about 7.5 to about 9.