2-m-tolyl-1H-imidazole 、 聚合甲醛 、 potassium carbonate 在
甲醇 作用下,
反应 1.0h,
以to afford 2-m-tolyl-4,5-dihydroxymethyl imidazole as a final product in an amount of 2 g (yield 9%)的产率得到(5-Hydroxymethyl-2-m-tolyl-3H-imidazol-4-yl)-methanol
参考文献:
名称:
Novel imidazole compounds and process for preparations thereof
Novel imidazole compounds and process for preparations thereof
申请人:Shikoku Chemicals Corporation
公开号:US04104473A1
公开(公告)日:1978-08-01
A process for producing C-methylol imidazoles which comprises reacting imidazole compounds containing an aryl group at the 2-position with formaldehyde in a reaction medium having a pH of at least 7 whereby the formaldehyde adds to the carbon atom of the imidazole ring. The products are either monomethylol imidazoles or dimethlol imidazoles depending upon the starting imidazole compounds. Most of the C-methylol imidazoles thus obtained are new compounds.
HEAT-CURABLE RESIN COMPOSITION, PREPREG, AND METHOD FOR PRODUCING FIBER-REINFORCED COMPOSITE USING EACH OF SAME
申请人:Toho Tenax Co., Ltd.
公开号:EP3075785A1
公开(公告)日:2016-10-05
The present invention provides a heat-curable resin composition, which comprises (1) a heat-curable resin mixture comprising a heat-curable resin (a) and thickener particles (b) and exhibiting a viscosity (150°C) after having been held at a temperature of 150°C for 30 seconds that is a viscosity (S), and (2) a curing agent, and is characterized in that the heat-curable resin composition exhibits a lowest viscosity (R) at 80-120°C, the lowest viscosity (R) is 0.1-10 Pa·s, and the viscosity (S) and lowest viscosity (R) satisfy the relationship of formula (1): 5 < S/R < 200 ...formula (1).
SELF-ADHESIVE PREPREG AND METHOD FOR PRODUCING SAME
申请人:Teijin Limited
公开号:EP3603915A1
公开(公告)日:2020-02-05
The present invention provides a self-adhesive prepreg which is characterized by comprising: a base prepreg that is composed of reinforcing fibers and a thermosetting resin composition (I), some or all of which is impregnated into a reinforcing fiber layer that is formed of the reinforcing fibers; an adhesive layer that is composed of a nonwoven fabric which is laminated on at least one surface of the base prepreg so as to be integrated with the base prepreg and a thermosetting resin composition (II) which is laminated on the surface of the nonwoven fabric so as to be integrated with the nonwoven fabric.
本发明提供了一种自粘预浸料,其特征在于包括基体预浸料,由增强纤维和热固性树脂组合物 (I) 组成,其中部分或全部浸渍在由增强纤维形成的增强纤维层中; 粘合层,由无纺布和热固性树脂组合物 (II) 组成,无纺布层压在基体预浸料的至少一个表面上,以便与基体预浸料融为一体,热固性树脂组合物 (II) 层压在无纺布的表面上,以便与无纺布融为一体。
MOLDING MATERIAL AND FIBER-REINFORCED COMPOSITE MATERIAL
申请人:Mitsubishi Chemical Corporation
公开号:EP3632982A1
公开(公告)日:2020-04-08
A molding material that enables acquirement of a fiber-reinforced composite material which has excellent demoldability from a mold and excellent surface appearance, which contaminates a mold surface after molding less, and which has excellent mechanical properties and heat resistance; and a fiber-reinforced composite material which has excellent demoldability from a mold and surface appearance, which contaminates a mold surface after molding less, and which has excellent mechanical properties and heat resistance, are provided. A molding material of the present invention includes a component (A): an epoxy resin; a component (B): an epoxy resin curing agent; a component (C): a compound that has a solubility parameter of 11.2 or less and a melting point of 115°C or lower; and a reinforcement fiber.
CARBON FIBER BUNDLE, PREPREG, AND FIBER-REINFORCED COMPOSITE MATERIAL
申请人:Teijin Limited
公开号:EP3719184A1
公开(公告)日:2020-10-07
The objective of the present invention is to provide a carbon fiber having an excellent strength development ratio when used in a composite material. The present invention, which resolves this problem, simultaneously satisfies expressions (1) and (2). Lc/d≤3 TS×d×Lc>6.0×105
Lc: X-ray crystallite size (Å)
d: single fiber diameter (µm)
TS: Strand tensile strength (MPa)