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    • 3. 发明授权
    • Anionic cellulose ethers having temperature-dependent associative properties
    • 具有温度依赖关联性质的阴离子纤维素醚
    • US06669863B1
    • 2003-12-30
    • US09857744
    • 2001-08-31
    • Berend Jan DijkJan Gerardus Batelaan
    • Berend Jan DijkJan Gerardus Batelaan
    • C09K500
    • C09K8/035C08B11/193C09K8/10
    • An anionic cellulose ether obtainable by a process comprising reacting an alkali metal cellulose with one or more reagents A selected from the group consisting of haloacetic acids, alkali metal haloacetates, alkali metal vinyl sulfonates, vinyl sulfonic acid, and precursors thereof, and one or more reagents B having the formula R1—(OCH2CH(R2))n-P, wherein R2 represents hydrogen or a methyl group; n is 0-2; P represents a glycidyl ether group, a 1,2-epoxy group or a precursor thereof, if P represents a glycidyl ether group, R1 represents a linear C3-C5 alkyl group, optionally containing an oxygen atom, a phenyl group, or a benzyl group, and if P represents a 1,2-epoxy group, R1 represents a linear C3-C5 alkyl group, optionally containing an oxygen atom. Preferably, reagent A is chloroacetic acid and reagent B is n-butyl glycidyl ether. The invention also relates to the use of said anionic cellulose ether as an associative thickener, rheology modifier or stabilizer.
    • 一种阴离子纤维素醚,其通过使碱金属纤维素与选自卤代乙酸,碱金属卤代乙酸盐,碱金属乙烯基磺酸盐,乙烯基磺酸及其前体的一种或多种试剂A反应, 具有式R 1 - (OCH 2 CH(R 2))nP的试剂B,其中R 2表示氢或甲基; n为0-2; P表示缩水甘油基醚基,1,2-环氧基或其前体,如果P表示缩水甘油醚基,则R 1表示任选含有氧原子的直链C 3 -C 5烷基,苯基, 或苄基,如果P表示1,2-环氧基,则R 1表示任选含有氧原子的直链C 3 -C 5烷基。 优选地,试剂A是氯乙酸,试剂B是正丁基缩水甘油醚。 本发明还涉及所述阴离子纤维素醚作为缔合增稠剂,流变改性剂或稳定剂的用途。