Verfahren zur Herstellung von Alkydharzen

1,197,855. Alkyd resin. NIPPON SHOKUBAI KAGAKU KOGYO CO. Ltd. 6 March, 1968 [6 March, 1967; 8 Aug., 1967], No. 10991/68. Heading C3R. Alkyd resins are produced by reacting olefins containing 6-20 C atoms with a polycarboxylic anhydride and H 2 O 2 in a molar ratio of 1:1-3: 1-10 at 20-120‹ C. and heating the product to 150-270‹ C. with a polyhydric alcohol or a mixture thereof with a polycarboxylic acid, anhydride or monocarboxylic acid till the acid value is less than 60. The first reaction may take place in the presence of a partially esterified product having at least one unreacted -OH group and which is obtained by reacting a polycarboxylic acid or anhydride or a monocarboxylic acid with a polyhydric alcohol and then following step 1. The partial ester may be 1-40% by weight of the polycarboxylic anhydride plus mono-olefin. In Examples 10-14 olefins were reacted with H 2 O 2 and phthalic anhydride or a mixture thereof with p-tert.- butyl benzoic acid or adipic acid and the reaction product then further reacted with adipic acid and glycerol or trimethylol propane. In Examples 15-21 an olefin was reacted with H 2 O 2 together with phthallic anhydride, tetrahydrophthallic anhydride or maleic anhydride and a glyceryl phthalate, a mixture of a glyceryl phthalate and a glyceryl benzoate, a mixture of a glyceryl phthalate and a glyceryl adipate, a glyceryl p-tert.-butyl benzoate, a mixture of a trimethylol propane and a glyceryl benzoate, a mixture of a glyceryl tetrahydrophthalate and a glyceryl adipate or an ethylene glycol maleatethe products were then reacted with glycerol and ethylene glycol, glycerol, propylene glycol and p-tert. -butyl benzoic acid, trimethylol propane and adipic acid, glycerol, sebacic acid and benzoic acid, trimethylol ethane and tetrahydrophthalic anhydride, glycerol, pentaerythritol, butanediol and adipic acid or glycerol, isophthalic acid, trimellitic anhydride and p-tert.. butyl benzoic acid. Paints were made by compounding the resins with a butylated melamine-formaldehyde resin or a butylated benzoguanamine-formaldehyde resin, xylol and titanium white.