A fire resistant resin for use as a binder in reinforced plastics and a resultant reinforced plastic includes the reaction product of (a) at least one resorcinol component selected from the group consisting of resorcinol and resorcinol formaldehyde novolak resin, and (b) a phenolic resole resin. The reaction may be achieved in the presence of an alkaline catalyst. A method of making a fire resistant resin binder for reinforced plastics and the method of making such reinforced plastics including, (a) at least one resorcinol component selected from the group consisting of resorcinol and resorcinol formaldehyde novolak resin, and (b) a phenolic resole resin. The reaction may be achieved in the presence of an alkaline catalyst.

Resorcinol-modified phenolic resin binder for reinforced plastics

A phenolic moulding composition in solid form, such as a dough moulding composition or sheet moulding composition, comprises a phenol formaldehyde novolak resin; a phenol formaldehyde resole resin as cross linking agent for the novolak resin; fibrous reinforcement; and non-fibrous particulate filler in an amount greater than the combined amount of the novolak and resole resins; the weight proportions of the ingredients being in the ranges ______________________________________ phenolic resins 20-40%fibrous reinforcement 20-50%non-fibrous particulate filler 25-50%______________________________________ Articles moulded from the compositions under heat and pressure have the flexural strength and impact strength required in certain precision parts for the automotive and engineering industries.

Phenolic moulding compositions

This process consists of impregnating with a solution 
of phenoplasts a support made of open-cell spongy material 
interposed between two layers of glass fibers continuously 
coupled to the support; heating the composite material, 
obtained from the impregnation and coupling steps, to the 
solvent evaporation temperature, and cutting the dried 
material after the evaporation of the solvent, in order to 
obtain a storable semifinished product which can be directly 
heat molded.

Process for manufacturing moldable, rigid and semirigid elements, in particular lightweight, selfsupporting and soundproofing articles

of EP0384077A fire resistant resin for use as a binder in reinforced plastics and a resultant reinforced plastic includes the reaction product of (a) at least one resorcinol component selected from the group consisting of resorcinol and resorcinol formaldehyde novolak resin, and (b) a phenolic resole resin. The reaction may be achieved in the presence of an alkaline catalyst. A method of making a fire resistant resin binder for reinforced plastics and the method of making such reinforced plastics including, (a) at least one resorcinol component selected from the group consisting of resorcinol and resorcinol formaldehyde novolak resin, and (b) a phenolic resole resin. The reaction may be achieved in the presence of an alkaline catalyst.

Process for the preparation of reinforced plastics based on a resorcinol-modified phenolic resin

The invention relates to thermosetting resin compositions, particularly moulding compounds, based on resole resin, thickener, glass fibre, fillers and if desired condensation catalysts and further usual additives, in which a precondensate of resorcinol and formaldehyde is used as a thickener.

Hans Pieter Braber

Papers

Thermosetting resin composition based on resole resin