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Mixtures of cellulose ethers, used as protective colloid in emulsion polymerization, e.g. copolymerization of vinyl acetate with higher ester, contains ethers with polyalkylene oxide chains, some modified with terminal allyl groups
Mixtures of cellulose ethers, used as protective colloid in emulsion polymerization, e.g. copolymerization of vinyl acetate with higher ester, contains ethers with polyalkylene oxide chains, some modified with terminal allyl groups
Mixtures of cellulose ethers are based on cellulose ethers (I) with 50-500 anhydroglucose units (AGU) and a chain of 0-4 ethyleneoxy, 0-4 propylene-2-oxy and 0-4 2-hydroxypropylene-1-oxy groups to an average of over 1.3 and under 4.5 polyalkylene oxide chains per AGU. The mixtures contain (A) allyl-modified (I) with 0.01-0.1 allyl groups per AGU and (B) unmodified (I) in an A:B weight ratio of 1:99 to 99:1. Mixtures of cellulose ethers contain (A) allyl-modified cellulose ethers of formula (1), with an average of 0.01-0.1 allyl groups per anhydroglucose unit (AGU), and (B) cellulose ethers of formula (1) in an A:B weight ratio of 1:99 to 99:1: C6H7O2 = one AGU; n = 50-500; R1, R2, R3 = a polyalkylene oxide chain of formula (2) with oxyalkylene units in any sequence; X = H, CH3, C2H5 in (A) and (B) or, in (A) only, CH2HC=CH2; p, q, r = 0-4; (p+q+r) = over 1.3 and under 4.5 on average per AGU .
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机译:纤维素醚的混合物基于具有50-500个脱水葡萄糖单元(AGU)以及0-4个亚乙基氧基,0-4个丙烯-2-氧基和0-4个2-羟基丙烯-1-氧基的纤维素醚(I)每个AGU的平均聚环氧烷链数超过1.3,且低于4.5。混合物包含(A)每AGU具有0.01-0.1个烯丙基的烯丙基改性的(I)和(B)A:B重量比为1:99至99:1的未改性的(I)。纤维素醚混合物包含(A)每个脱水葡萄糖单元(AGU)平均具有0.01-0.1个烯丙基的式(1)烯丙基改性纤维素醚,和(B)在A中的式(1)纤维素醚B重量比为1:99至99:1:C6H7O2 = 1个AGU; n = 50-500; R1,R2,R3 =具有任意顺序的氧化烯单元的式(2)的聚环氧烷链;在(A)和(B)中X = H,CH 3,C 2 H 5,或者仅在(A)中X = CH 2 HC = CH 2; p,q,r = 0-4; (p + q + r)=每个AGU平均超过1.3,低于4.5。
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