公开(公告)号：US10745515B2

公开(公告)日：2020-08-18

申请号：US16466075

申请日：2016-12-03

Applicant: SOOCHOW UNIVERSITY

Inventor： Aijuan Gu ,  Jiatao Miao ,  Guozheng Liang ,  Li Yuan

IPC: C08G59/24 ,  C08G59/68 ,  C08G59/26 ,  C07D307/68 ,  C07D407/14 ,  C07D301/14 ,  C07D303/02

Abstract: The present invention discloses a biomass-based epoxy resin and preparation method thereof; under conditions of N,N-dimethylformamide as a catalyst, 2,5-furandicarboxylic acid and thionyl chloride are acylated to obtain 2,5-furan diformyl chloride; then it is dissolved with dichloromethane; under tertiary amine conditions an esterification reaction takes place, and bis(4-allyl-2-methoxyphenyl)furan-2,5-dicarboxylic acid ester is thus obtained; by means of meta-chloroperoxybenzoic acid, its unsaturated double bond is epoxidized to obtain a biomass-based epoxy resin. The process of the present invention is simple; the raw materials come from biomass 2,5-furandicarboxylic acid and eugenol; in comparison with bisphenol-A epoxy resin based on petroleum and coal resources, the raw materials are green and renewable, and are advantageous to reducing the consumption of renewable resources with regard to polymeric material. The obtained cured epoxy resin has excellent thermal properties and modulus, and has broad prospects for application.

公开(公告)号：US11008423B2

公开(公告)日：2021-05-18

申请号：US16466111

申请日：2016-12-03

Applicant: SOOCHOW UNIVERSITY

Inventor： Aijuan Gu ,  Jiatao Miao ,  Guozheng Liang ,  Li Yuan

IPC: C08G73/10 ,  C08G73/12

Abstract: The present invention discloses a modified bismaleimide resin and preparation method thereof; under conditions of N,N-dimethylformamide serving as a catalyst, biomass-based 2,5-furandicarboxylic acid and thionyl chloride are acylated to obtain 2,5-furan diformyl chloride, which is then dissolved in dichloromethane with a biomass-based eugenol; under tertiary amine conditions an esterification reaction takes place, and a fully biomass-based bis(4-allyl-2-methoxyphenyl)furan-2,5-dicarboxylic acid ester is thus obtained; same is used for preparing a modified bismaleimide resin. The bismaleimide resin prepared by the present invention has excellent thermal properties and rigidity; the preparation method uses 2,5-furandicarboxylic acid from biomass as well as eugenol; the raw materials are green and environmentally friendly and renewable; the invention also has the feature of a simple production process, and has broad prospects for application in such fields as aeronautics and astronautics, electronic information, electrical insulation.

公开(公告)号：US10738144B2

公开(公告)日：2020-08-11

申请号：US16314907

申请日：2016-12-03

Applicant: SOOCHOW UNIVERSITY

Inventor： Aijuan Gu ,  Jiatao Miao ,  Guozheng Liang ,  Li Yuan

IPC: C08F222/40 ,  C09K21/14 ,  C08G73/10

Abstract: Disclosed are a flame-retardant bismaleimide resin and a preparation method thereof comprising: forming an eugenol salt suspensoid from a whole biomass eugenol in the present of a strong alkali metal base, adding dropwisely a solution of phosphorus oxychloride in methyl chloride to react to obtain a biomass-based phosphate flame-retardant; mixing bismaleimide, 2,2′-diallylbisphenol with the obtained phosphate, curing and posttreating to obtain the flame-retardant bismaleimide resin. Compared with petroleum-based bismaleimide resin, the flame-retardant bismaleimide resin prepared by the present invention is obtained from eugenol derived from biomass, and the raw material is green and renewable. It maintains mechanical properties and processing properties of the petroleum-based bismaleimide resin and has an excellent flame-retardant property. The preparation method provided by the invention has the advantages of low cost and simple production process, and has wide application prospect in the fields of aerospace, electronic information, electrical insulation and the like.