Nano Sulfated Titania as Solid Acid Catalyst in Direct Synthesis of Fatty Acid Amides
摘要:
Nanosized sulfated titania was prepared by a sol gel hydrothermal process. X-ray diffraction (XRD), transmission electron, and scanning electron micrographs (TEM and SEM), FT-IR specific surface area, and BET N(2) adsorption were employed to characterize the properties of the synthesized sulfated TiO(2). The results indicate that both anatase and rutile TiO(2) are obtainable. This prepared sulfated titania showed high catalytic activity in direct amidation of fatty acids as well as benzoic acids with various amines under solvent-free conditions.
Novel olefin polymer compositions and foamed articles prepared therefrom having improved elevated temperature dimensional stability
申请人:THE DOW CHEMICAL COMPANY
公开号:EP0041234A1
公开(公告)日:1981-12-09
Elevated temperature distortion characteristics of freshly prepared olefin polymer foams are substantially improved by employing in the preparation thereof a small amount (e.g., from about 0.15 to about 10 weight percent based on the olefin polymer) of N-substituted fatty acid amide of the formula:
wherein R1 represents an alkyl group of from 11 to 17 carbon atoms and R2 represents an alkyl group of from 12 to 18 carbon atoms and wherein the R2 alkyl group is no more than one carbon atom larger than the R1 alkyl group.
Synthèse d'amides gras N-substitués par catalyse enzymatique
申请人:SOCIETE D'EXPLOITATION DE PRODUITS POUR LES INDUSTRIES CHIMIQUES ( S.E.P.P.I.C.)
公开号:EP0298796A1
公开(公告)日:1989-01-11
La présente invention concerne un procédé pour la synthèse d'amides gras N-substitués par réaction d'un composé organique présentant une fonction acide terminale et un composé organique présentant une fonction amine terminale caractérisé en ce que ladite réaction est effectuée en présence d'une enzyme de la classe des acyltransférases.
Method for producing expandable thermoplastic polymer particles
申请人:KANEGAFUCHI KAGAKU KOGYO KABUSHIKI KAISHA
公开号:EP0396046A2
公开(公告)日:1990-11-07
The present invention provides a method for producing expandable thermoplastic polymer particles which comprises conducting polymerization by adding a polymerizable monomer either continuously or intermittently to thermoplastic polymer particles having a uniform particle size suspended in water,characterized in that an amide compound is added when the added amount of the polymerizable monomer is not more than one half of the total amount to be added in the course of polymerization and resulting polymer particles are impregnated with an easily volatile blowing agent after completion of addition of the amide compound and the polymerizable monomer. According to the present invention, expandable thermoplastic particles which are capable of giving cells, fine and uniform in size, are obtainable even by expanding immediately after production without any aging period.
Disclosed is a thermochromic microencapsulated pigment which comprises as four essential components (a) an electron-donating chromatic organic compound, (b) an electron-accepting compound, (c) a reaction medium determining the temperatures at which the color reactions of component (a) with component (b) take place, and (d) a color change temperature regulator, the color change temperature regulator (d) comprising one or more compounds selected from the group consisting of esters, alcohols, ketones, acid amides, hydrocarbons, and fatty acids and having a melting point Y (°C) satisfying the relationship (X+30)°C≤Y≤200°C, wherein X (°C) is the melting point of component (c), and the four essential components being microencapsulated.
REVERSIBLY THERMOCHROMIC COMPOSITION, AND REVERSIBLY THERMOCHROMIC MICROCAPSULE PIGMENT HAVING SAME ENCLOSED THEREIN
申请人:The Pilot Ink Co., Ltd
公开号:EP3608386A1
公开(公告)日:2020-02-12
[Problems]
The present invention provides a highly marketable reversibly color changeable composition which provides a vivid yellow to orange color during color development, turns colorless during decoloration, and improves light resistance and a reversibly thermochromic microcapsule pigment encapsulating the same.
[Solution]
Disclosed are a reversibly thermochromic composition including: (a) a specific pyridine derivative as an electron-donating color-developing organic compound; (b) an electron-accepting compound; and (c) a reaction medium which reversibly induces an electron transfer reaction between the component (a) and the component (b) in a specific temperature range, and a reversibly thermochromic microcapsule pigment encapsulating the same.