C - Chemistry – Metallurgy – 08 – B
Patent
C - Chemistry, Metallurgy
08
B
6/67, 260/217.3
C08B 11/193 (2006.01) C08L 1/26 (2006.01)
Patent
CA 1312859
ABSTRACT HYDROXYPROPYL METHYL CELLULOSE ETHERS USEFUL AS THICKENING AGENTS FOR ORGANIC LIQUIDS Hydroxypropyl cellulose ethers which have a methoxyl substitution of from 21 percent to 35 percent and a hydroxypropoxyl substitution of from 18 percent to 35 percent and a sum of the methoxyl and hydroxypropoxyl substitution of from 39 percent to 70 percent and which have a viscosity of at least 1000 mPa.s as a 2 weight percent aqueous solution are useful as thickening agents for organic liquids, optionally mixed with water. The hydroxypropyl methyl cellulose ethers having a methoxyl substitution of from 25 percent to 35 percent, a hydroxypropoxyl substitution of from 18 to 30 percent, and a number average molecular weight of at least 50,000 are novel compounds. C-33,309-CA-div.
615898
Dow Chemical Europe S.a.
Hess Roland H.p.
Smart & Biggar
The Dow Chemical Company
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