-
公开(公告)号:US5773636A
公开(公告)日:1998-06-30
申请号:US640921
申请日:1996-08-05
CPC分类号: C07C67/03
摘要: A process for the production of fatty acid lower alkyl esters comprising the steps of: A) treating at least one fatty acid ester of glycerol with from about 0.3 to about 3% by weight, based on the weight of ester, of an acid at an elevated temperature; B) removing said acid from the treated fatty acid ester; and C) reacting the treated fatty acid ester with at least one lower aliphatic alcohol to transesterify the fatty acid ester.
摘要翻译: 一种用于生产脂肪酸低级烷基酯的方法,包括以下步骤:A)以至少一种甘油脂肪酸酯的量处理至少一种脂肪酸酯,所述脂肪酸酯以约0.3至约3重量%(基于酯的重量计)的酸在 升温 B)从处理的脂肪酸酯中除去所述酸; 和C)使经处理的脂肪酸酯与至少一种低级脂族醇反应以酯交换脂肪酸酯。
-
公开(公告)号:US5455370A
公开(公告)日:1995-10-03
申请号:US178281
申请日:1994-01-10
摘要: Fatty acid glycerides can be transesterified with lower aliphatic alcohols if the reaction is carried out in the presence of fatty acids corresponding to formula (II):R.sup.2 --COOH (II),in which R.sup.2 is an aliphatic hydrocarbon moiety containing 11 to 17 carbon atoms and 0, 1 or 2 double bonds. The products are distinguished by a low content of bound glycerol and a low acid value. Removal or neutralization of the catalyst is unnecessary because, after the transesterification, the fatty acids are also present in the form of their esters.
摘要翻译: PCT No.PCT / EP92 / 01463 Sec。 371日期1994年1月10日 102(e)日期1994年1月10日PCT提交1992年6月29日PCT公布。 出版物WO93 / 01263 如果反应在对应于式(II)的脂肪酸存在下进行,则其中R2是脂族烃(II),R2-COOH(Ⅱ) 部分含有11至17个碳原子和0,1或2个双键。 产品的特征在于低含量的结合甘油和低酸值。 催化剂的去除或中和是不必要的,因为在酯交换之后,脂肪酸也以它们的酯的形式存在。
-