In-situ preparation of polyaspartic ester mixture
Номер патента: EP1208135A1
Опубликовано: 29-05-2002
Автор(ы): Richard R. Roesler
Принадлежит: Bayer AG, Bayer Corp
Опубликовано: 29-05-2002
Автор(ы): Richard R. Roesler
Принадлежит: Bayer AG, Bayer Corp
Реферат: A method for making a polyaspartic ester mixture in-situ comprising the sequential steps of (a) reacting a polypropylene oxide amine with an excess amount of an ester of fumaric or maleic acid to form a mixture containing first polyaspartic ester component and excess unreacted ester of fumaric or maleic acid, and (b) adding an acyclic amine to the mixture resulting from step (a) and reacting the acyclic amine with the excess ester of fumaric or maleic acid to form a second polyaspartic ester component.
Manufacturing Method of Polyaspartic Acid Using Maleic Anhydride
Номер патента: US20100076161A1. Автор: Jong Hwa Lee,Jeong Gon Kim,Sung Duck Seo,Yeong Im Yu. Владелец: Aekyung Petrochemical Co Ltd. Дата публикации: 2010-03-25.