MONOALLYLNAPHOTHOL COMPOUND, CURING AGENT FOR EPOXY RESIN CONTAINING THE SAME COMPOUND AND EPOXY RESIN COMPOSITION

Japanese Patent JP3541253

B2

PURPOSE: To obtain a new monoallylnaphthol compound useful as a dilluent, a denaturant or a modifier for an epoxy resin curing agent and imparting excellent workability to the agent by lowering the melting point and melt viscosity of the curing agent and capable of providing a cured product free from crack.
CONSTITUTION: This compound is a naphthol compound having one ally group expressed by formula I (R is H or OH; when R is H, the position of OH is 2-position, that is, β-position), e.g. a monoallyl β-naphthol of formula II. The compound of formula I is obtained by uniformly mixing, e.g. a naphthol with a base and as necessary, an organic solvent to phenoxidize the naphthol, carrying out allylation reaction whole dropping an allyl halide to the solution system for a long time and subjecting the reactional product to Claisen's rearrangement by high-temperature heating. This epoxy resin composition is obtained from the naphthol compound of formula I, an aldehyde condensation product of a naphthol and an epoxy resin. The composition has high glass transition temperature and excellent heat resistance, moisture resistance, adhesiveness and flexibility and it can prevent occurrence of crack in a package.

Akihiro Naka
Shuichi Ito

JP28814193A

July 07, 2004

November 17, 1993

Click for automatic bibliography generation  

Daiichi Kogyo Pharmaceutical Co., Ltd.

C07C39/225; C08G59/40; C08G59/62; C08L63/00; C09K3/10; (IPC1-7): C08G59/62; C08G59/40; C09K3/10

JP43019857B1
JP7138202A
JP5086157A
JP4314723A
JP5125158A

J.Am.Chem.Soc.,1989,Vol.111,No.11,P3813-3818
Chemistry Letters,1981,No.1,P47-50
Izv,Akad.Nauk SSSR,Ser,khim,1968,No.3,P541-548

Tamako Tsutada
Masato Tsuda
Hitoshi Seki

Previous Patent: PRODUCTION OF BROMINATED BETA-LACTAM COMPOUND

Next Patent: CUTTING/EXHAUSTING METHOD AND DEVICE FOR TRANSPORT OBJECT SUCH AS SLUDGE