[EN] METHODS OF PRODUCING PARA-XYLENE AND TEREPHTHALIC ACID<br/>[FR] PROCÉDÉS DE FABRICATION DE PARA-XYLÈNE ET D'ACIDE TÉRÉPHTALIQUE
申请人:MICROMIDAS INC
公开号:WO2013040514A1
公开(公告)日:2013-03-21
The present disclosure provides methods to produce para-xylene, toluene, and other compounds from renewable sources (e.g., cellulose, hemicellulose) and ethylene in the presence of an acid, such as a Lewis acid. For example, cellulose and/or hemicellulose may be converted into 2,5-dimethylfuran (DMF) and 2-methylfuran, which may be converted into para-xylene and toluene, respectively. In particular, para-xylene can then be oxidized to form terephthalic acid.
A thermoplastic resin composition is disclosed which comprises
(a) a modified polyphenylene ether or a composition containing it, and
(b) (i) a modified propylene polymer comprising propylene polymer which is graft-copolymerized with a styrene based monomer or with a mixture of a styrene based monomer and a monomer copolymerizable therewith, or (ii) a composition containing the modified propylene polymer in (b)-(i) and propylene polymer. The resin composition may contain (c) a rubber-like substance containing at least one rubber-like substance having a polar group and/or (d) a melt flow characteristics improving agent.
A METHOD FOR THE FORMATION OF A RAPID-GELLING BIOCOMPATIBLE HYDROGEL AND THE PREPARATION OF A SPRAYING AGENT
申请人:Bioregen Biomedical (Changzhou) Co., Ltd.
公开号:EP2177236A1
公开(公告)日:2010-04-21
This invention discloses a preparation method for biocompatible rapid-gelating hydrogel. Wherein, hydrogel is formed by rapid chemical-crosslinking using the mixing and chemical-crosslinking reaction under specified conditions between several active compound components. The preparation method comprises the following steps: (1) The solution containing biocompatible thiolated macromolecular derivatives (component A) and biocompatible thiol reactive crosslinking agents (component B) mutually mix to form reactive mixture with specified crosslinking conditions; (2) the reactive mixture forms the hydrogel. The invention also discloses a preparation method for novel rapid-gelating hydrogel spray and an application in medical field. This invention has the advantages of good biocompatibility, no by-products, good stability, convenient use, small amount of raw materials used, suitable for many medical application, etc..