LIGHT-COLORED, LOW MOLECULAR WEIGHT PHENOLIC-MODI
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专利名称：LIGHT-COLORED, LOW MOLECULAR WEIGHT PHENOLIC-MODIFIED ROSIN
ESTERS
发明人：FRIHART, Charles, R.,KRAJCA, Kenneth,
E.,NEUMANN, Brett, A.
申请号：US1999021533
申请日：19990917
公开号：WO00/017280P1
公开日：
20000330
专利内容由知识产权出版社提供
摘要：Light-colored phenolic-modified rosin esters, suitable for use as, for example, tackifiers in adhesive compositions, are provided. The resins may be prepared by reacting together rosin, a phenolic compound, formaldehyde or a reactive equivalent thereof, and a non-phenolic hydroxyl-containing organic compound in the presence of at least one lightening agent selected from phenol sulfide compounds, phosphorous acid, esters of phosphorous acid, and hypophosphite salts. The formaldehyde or reactive equivalent is present in an amount ranging from about 1.1 to about 3.5 equivalents of -CHO moieties per 1 equivalent of Ar-OH moiety of the phenolic compound, in order to obtain rosin esters having desirably low color, and adequately low molecular weight to effectively function as tackifiers.
申请人：FRIHART, Charles, R.,KRAJCA, Kenneth, E.,NEUMANN, Brett, A.
地址：US,US,US,US
国籍：US,US,US,US
代理机构：PARKER, David, W. ,GOWSHALL, Jon, V.更多信息请下载全文后查看