Abstract: A heat-curable resin composition comprising a multifunctional epoxy resin monomer and a heat-latent curing agent of formula (I) provides a cured epoxy resin having good thermal and dimensional stability: ##STR1## wherein: R is hydrogen, a C.sub.1-4 alkyl or C.sub.1-4 alkoxy group.

Abstract: A process for producing a synthesis gas having carbon monoxide and hydrogen from the reduction of carbon dioxide with natural gas or lower hydrocarbons having methane as a main component and oxygen and steam over catalyst composed of nickel and, as promotors, alkali metal and alkaline earth metal component supported on silicon-containing support such as zeolite, silica, silicate and silica-alumina which are stable under reaction condition is disclosed. This process characterized in that the catalytic activity and performance property are improved by supporting alkali metal, alkaline earth metal and nickel oxide from metal salts having low melting point uniformly on silicon-containing support having high surface area by solid-state reaction. The amounts of adding alkali metal, alkaline earth metal and nickel are 0.01 to 10% by weight, 1 to 20% by weight and 1 to 20% by weight, respectively. The present invention is conducted in the temperature range from 600.degree. C. to 1000 .degree. C.

Abstract: A vascular graft fabricated of a polyester fiber, the surface of which is impregnated with biodegradable blood-compatible materials, characterized in that the surface of the said vascular graft comprises carboxylate groups and is impregnated with polysaccharides or their derivatives. The vascular graft is manufactured by treating the hydrophobic surface of a vascular graft fabricated of a polyester fiber to render it more hydrophilic and then impregnating the vascular graft with above polysaccharides or their derivatives by chelate bond with metal ions or physical adsorption in order to increase the adhesion properties and adding glycerin to the impregnated polysaccharides or their derivatives in order to increase the softness so that the impregnated substances may turn into the state of gel by blood at the time of use.