GANE, Patrick A.C.,BURI, Matthias,RENTSCH, Samuel,BRIDY, Julie
申请号：
ES12709889
公开号：
ES2602259T3
申请日:
2012.03.22
申请国别(地区):
ES
年份:
2017
代理人:
摘要：
Process for preparing particles autoagglutinating pigments comprising the following steps: a) providing an aqueous suspension of mineral pigment material； b) providing at least one polymeric binder, wherein the binder comprises at least one modified polysaccharide having a degree of carboxylation in the range of 0.4 to 2.0 and having an intrinsic viscosity in the range of 3 to 300 ml / g； wherein the carbon of the binder shows a rate of nuclear transformation 14C 14N of between 900 and 920 transformations per hour and per gram of carbon in the binder； c) mixing the binder of step b) with the aqueous suspension of mineral material pigment of step a) and adjusting the solids content of the suspension obtained so that it is from 45 to 80% by weight, based on the total weight of the suspension； d) grinding the aqueous suspension of mineral material of step c) until the fraction of particles autoagglutinating pigments having a particle size less than 1 .mu.m is greater than 5% by weight, based on the total weight of the particles pigments, wherein, in step c), the binder to the aqueous suspension of mineral pigments added in an amount of from 0.1 to 10.0% by weight, based on the total weight of the suspension.Procedimiento para preparar partículas de pigmentos autoaglutinantes que comprende las siguientes etapas: a) proporcionar una suspensión acuosa de material de pigmento mineral； b) proporcionar al menos un aglutinante polimérico, en el que el aglutinante comprende al menos un polisacárido modificado que tiene un grado de carboxilación en el intervalo de 0,4 a 2,0 y que tiene una viscosidad intrínseca en el intervalo de 3 a 300 ml/g； en el que el carbono del aglutinante muestra una velocidad de transformación nuclear de 14C en 14N de entre 900 y 920 transformaciones por hora y por gramo de carbono en el aglutinante； c) mezclar el aglutinante de la etapa b) con la suspensión acuosa de material de pigmento mineral de la etapa a) y ajustar el contenido de sólidos de la s
