Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Patent
1993-07-08
1995-04-11
Nutter, Nathan M.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
536 93, 536 94, 536 96, 524 43, 524 44, 106169, 106170, C08B 1108, C08B 1116, C08B 11187, C08B 11193
Patent
active
RE0349046
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 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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English Language Derwent Abstract for European Patent Publication No. 0 161 607.
Just Ernst K.
Majewicz Thomas G.
Sau Arjun C.
Edwards David
Hercules Incorporated
Nutter Nathan M.
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