Alkylaryl hydrophobically modified cellulose ethers

Details Alkylaryl hydrophobically modified cellulose ethers Alkylaryl hydrophobically modified cellulose ethers

C - Chemistry, Metallurgy

08

L

400/1338, 260/21

C08L 1/30 (2006.01) C08B 11/04 (2006.01) C08B 11/193 (2006.01) C08L 57/00 (2006.01) C09D 7/00 (2006.01) C09D 101/30 (2006.01) C09D 131/02 (2006.01) C09D 157/00 (2006.01) C08L 1/28 (2006.01)

Patent

CA 2028387

ALKYLARYL HYDROPHOBICALLY MODIFIED CELLULOSE ETHERS Abstract of the Disclosure Cellulose ethers are disclosed which have sufficient nonionic substitution to render them water soluble and which are further modified with a C10 to C24 long chain alkylaryl group in an amount between 0.2% by weight and the amount which makes them less than 1% by weight soluble in water. Hydroxyethylcellulose is a preferred water soluble cellulose ether for modification according to the invention. These products exhibit substantially improved viscosifying effects compared to their unmodified cellulose ether counterparts, and provide good leveling and sag resistance in latex paints. Preferred alkylaryl groups are nonylphenyl, dodecylphenyl, and dinonylphenyl. Included are cellulose ethers with spacer groups of various lengths between the alkylaryl group and the connecting group to the cellulose molecule.

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