US 2016/0229746 A1

Cement grinding additive for enabling PVC equipment use

(22) 16.09.2014

(43) 11.08.2016

(57) The present invention provides cement grinding additive compositions and methods which allow a PVC-safe, power­ful, and robust defoaming agent to be uniformly dispersed throughout a broad concentration range while retaining storage stability even in cases wherein the defoaming agent is highly diluted. Exemplary cement grinding additive compositions comprise at least one amine cement grinding additive; an air detrainer selected from the group consisting of (i) ethoxylated, propoxylated fatty alcohol or alkylphenol, (ii) polyalkoxylated polyalkylene polyamine, or (iii) a mixture thereof.

(71) GCP Applied Technologies Inc., ­Cambridge, MA (US)

(73) GCP Applied Technologies Inc., Cambridge, MA (US)

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