首页>
外国专利>
MODIFYING STARCH WITH CATIONIC POLYMERS AND USE OF THE MODIFIED STARCHES AS DRY-STRENGTH AGENT
MODIFYING STARCH WITH CATIONIC POLYMERS AND USE OF THE MODIFIED STARCHES AS DRY-STRENGTH AGENT
展开▼
机译:用阳离子聚合物改性淀粉,并使用改性淀粉作为干强度剂
展开▼
页面导航
摘要
著录项
相似文献
摘要
A process for modifying starch by heating starch in an aqueous medium to temperatures above the gelatinization temperature of said starch comprises effecting said modifying of said starch in the presence of(a) a polymeric cationizer selected from the group consisting of the polymers containing vinylamine units and having molar masses of up to 1 million, the polyethyleneimines, the polydiallyldimethylammonium chlorides, the condensates of dimethylamine with epichlorohydrin or dichloroalkanes, the condensates of dichloroethane and ammonia, and the mixtures thereof, and(b) polymeric papermaking drainage aids selected from the group consisting of the water-soluble crosslinked polyamidoamines with or without an ethyleneimine graft, the polymers containing acrylamide and/or methacrylamide units and having molar masses of more than 1 million, the polymers containing vinylamine units and having molar masses of more then 1 million, and the mixtures thereof.
展开▼