Joint compounds using thickeners prepared from raw cotton linters
First Claim
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.
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Accused Products
Abstract
A mixture composition of a cellulose ether made from raw cotton linters and at least one additive is used in a ready mixed joint compound composition wherein the amount of the cellulose ether in the joint compound composition is significantly reduced. When this joint compound composition is mixed with water and applied to a substrate, the water retention, sag resistance, and workability of the wet joint compound are comparable or improved as compared to when using conventional similar cellulose ethers.
21 Citations
55 Claims
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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.
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20. A ready mixed, joint compound composition comprising a binder, filler, biocide, and a thickener and water-retaining agent of at least one cellulose ether prepared from raw cotton linters,
wherein when the ready mixed joint compound composition is mixed with a sufficient amount of water, the joint compound composition produces a joint compound paste where the amount of the cellulose ether in the joint compound is significantly reduced while water retention, sag resistance, and workability of the joint compound mortar are improved or comparable as compared to when using conventional similar cellulose ethers.
Specification