Alkylaryl hydrophobically modified cellulose ethers

Details Alkylaryl hydrophobically modified cellulose ethers Alkylaryl hydrophobically modified cellulose ethers

1989-10-30

1992-06-09

Nutter, Nathan M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536 93, 536 94, 536 96, C08B 1108, C08B 1116, C08B 11187, C08B 11193

Patent

active

051208385

ABSTRACT:
Cellulose ethers are disclosed which have sufficient nonionic substitution to render them water soluble and which are further modified with a C.sub.10 to C.sub.24 long chain alkylaryl group in an amount between 0.2% by weight and the amount which makes them less then 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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