METHYLENE FURANONE DERIVATIVES AND USE OF SAID DERIVATIVES AS A PHOTOPROTECTING OR ANTIOXIDANT OR DEPIGMENTATION AGENT IN COSMETIC OR DERMATOLOGICAL COMPOSITIONS
申请人:Marchal Estelle
公开号:US20110184059A1
公开(公告)日:2011-07-28
The present invention relates to novel methylene furanone derivatives as well as the use thereof as a protective, antioxidant, or depigmentation agent in cosmetic or dermatological compositions.
The invention also relates to a method for preparing said derivatives involving a Suzuki-Miyaura coupling reaction from corresponding dibromofuranone derivatives.
The invention also relates to a method of preparation involving a coupling reaction of 2-methoxy-furan derivatives with a ketone followed by dehydration.
Imide-linked maleimide and polymaleimide compounds
申请人:Mizori G. Farhad
公开号:US20080075961A1
公开(公告)日:2008-03-27
The invention is based on the discovery that a remarkable improvement in the performance of maleimide thermosets can be achieved through the incorporation of imide-extended mono-, bis-, or polymaleimide compounds. These imide-extended maleimide compounds are readily prepared by the condensation of appropriate anhydrides with appropriate diamines to give amine terminated compounds. These compounds are then condensed with excess maleic anhydride to yield imide-extended maleimide compounds.