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Process for preparing thickeners and use of thickeners thus prepared in formulations containing highly viscous unsaturated polyester
Process for preparing thickeners and use of thickeners thus prepared in formulations containing highly viscous unsaturated polyester
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机译：制备增稠剂和使用增稠剂的方法在含有高粘性不饱和聚酯的制剂中制备的增稠剂
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摘要
The present invention relates to a combined clay slurry ( c) is formed, the combined clay slurry (c) is treated with at least one quaternary alkyl-ammonium salt, and the quaternary alkyl-ammonium salt treated mineral clay mixture thus prepared is separated from the aqueous medium; , wherein the aqueous hormite clay slurry (a) is formed by (i.1) dispersing in an aqueous medium a fraction of at least one hormite clay selected from the group of sepiolite and palygorskite to form a dispersion, The smectite clay slurry (b) is formed by (ii.1) dispersing at least one fraction of smectite clay in an aqueous medium to form a dispersion, wherein the weight of the hormite clay content in the combined clay slurry (c) is the smectite clay content exceeds the weight of; subjecting the dispersion formed in (i.1) and (ii.1) to high velocity fluid shear before performing step iii. and/or after performing step iii; wherein the fraction of at least one hormite clay used to form the aqueous hormite clay slurry (a) is an X-ray powder pattern recorded for an oriented glycolated sample of the hormite clay fraction using Cu-K α1 -radiation. at least one mixed mineral organoclay comprising or consisting of a quaternary alkyl-ammonium salt treated mineral clay mixture having a defined integral width B of reflection having a Miller index (110) of less than 0.800 scan units in The use of a rheology additive in a liquid composition comprising at least one unsaturated polyester. The present invention also relates to a process for preparing a mixed mineral organoclay rheology additive and to the use of the additive so prepared as a thickener in liquid compositions.
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