Patent ID: 7066996
Filing Date: 2006-06-27
Classification: B63H,C04B,Y02W

Abstract:
1. A mixture composition for use in joint compound comprising a) a cellulose ether in an amount of 20 to 99.9 wt % selected from the group consisting of alkylhydroxyalkyl celluloses and hydroxyalkyl celluloses and mixtures thereof, prepared from raw cotton linters, and b) at least one additive in an amount of 0.1 to 80 wt % selected form the group consisting of organic or inorganic thickening agents, anti-sag agents, air entraining agents, wetting agents, defoamers, dispersants, calcium-complexing agents, retarders, accelerators, redispersible powders, biopolymers, and fibres, wherein when the mixture composition is used in a joint compound formulation and is mixed with a sufficient amount of water, the joint compound formulation produces a paste that can be applied to substrates, wherein the amount of the mixture in the joint compound is significantly reduced while water retention, sag-resistance, and workability of the wet joint compound are improved or comparable as compared to when using conventional similar cellulose ethers.