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AssigneeHitachi Chemical Company, Ltd.
InventorsSusumu Konii, Yukio Yoshimura, Ken Nanaumi, Kohei Yasuzawa, Takeshi Yoshida, Toyotaro Shinko
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Internally plasticized phenolic resins suitable for use in preparing laminates and the like excellent in electrical properties, heat resistance, solvent resistance as well as punchability are produced by reacting a compound of the formula: ##STR1## wherein R.sub.1 is an alkylene residue having 1 to 3 carbon atoms; and R.sub.2 and R.sub.3 are independently hydrogen or a saturated or unsaturated hydrocarbon group having 1 to 3 carbon atoms, with an epoxidized vegetable oil with heating in the presence of one or more secondary and/or tertiary amines, and adding formaldehyde or one or more phenols and formaldehyde to the reaction system to further proceed the reaction.
A process for producing an internally plasticized phenolic resin which comprises reacting a compound of the formula ##STR4## wherein R.sub.1 is an alkylene residue having 1 to 3 carbon atoms;
A process for producing a modified phenolic resin for producing laminates which comprises reacting a compound having two phenolic hydroxyl groups of the formula:
A process for producing a modified phenolic resin for producing laminates which comprises reacting an epoxidized vegetable oil with a compound having two phenolic hydroxyl groups of the formula:
Dependencies are inferred from the claim text.