从常见的单不饱和脂肪酸开始,揭示了一种策略,该策略通过两个可扩展的催化步骤序列提供超长的脂肪族α,ω-双官能结构单元,实际上使起始原料的链长增加了一倍。在催化动态异构化结晶方法中,α,ω-二羧酸脂肪酸自复分解产物的中心双键选择性地转移到统计学上不利的α,β-位置。通过随后的催化烯烃复分解步骤实现“链加倍”,该步骤通过使用废弃的内部烯烃作为可回收的共试剂克服了这种底物的低反应性,从而产生了具有精确链长的超长链α,ω-双官能结构单元,如C 48所示链。这些结构的独特性体现在由这些遥螯单体产生的脂肪族聚酯的无与伦比的熔点(T m = 120°C),以及它们自组装成聚乙烯类单晶的过程。
[EN] ACTIVE INGREDIENT COMPRISING A MIXTURE OF UNSATURATED DICARBOXYLIC FATTY ACIDS, COMPOSITIONS COMPRISING SAID INGREDIENT AND COSMETIC OR DERMATOLOGICAL USES<br/>[FR] PRINCIPE ACTIF COMPRENANT UN MÉLANGE D'ACIDES GRAS DICARBOXYLIQUES INSATURÉS, COMPOSITIONS COMPRENANT LEDIT PRINCIPE, ET UTILISATIONS COSMÉTIQUES OU DERMATOLOGIQUES
申请人:SEDERMA SA
公开号:WO2016012973A1
公开(公告)日:2016-01-28
The ingredient comprises a mixture of unsaturated dicarboxylic acids comprising the Z and E isomers of at least one mono-unsaturated dicarboxylic C12-C24 acid, the concentration of the E isomer being of at least 25% by weight based on the total weight of Z and E isomers The ingredient can be used to form cosmetic or dermatological compositions, in particular for lightening the skin, improving the clarity and unification of the skin complexion.80
METHODS FOR PRODUCING DODECANEDIOIC ACID AND DERIVATIVES THEREOF
申请人:Draths Corporation
公开号:EP2389349A2
公开(公告)日:2011-11-30
A POLYOL BASED ON DIMER FATTY ACID RESIDUES AND THE CORRESPONDING POLYURETHANES
申请人:Croda International PLC
公开号:EP3087118A1
公开(公告)日:2016-11-02
POLYURETHANE
申请人:Croda International PLC
公开号:EP3087116A1
公开(公告)日:2016-11-02
ACTIVE INGREDIENT COMPRISING A MIXTURE OF UNSATURATED DICARBOXYLIC FATTY ACIDS, COMPOSITIONS COMPRISING SAID INGREDIENT AND COSMETIC OR DERMATOLOGICAL USES