Patent GB-376481-A (GB)
Title: Manufacture of resinous polymerisation products
IPC: C08F22/00
Filed: 1931-06-26
Abstract: 376,481. Artificial resins. I. G. FARBENINDUSTRIE AKT.-GES., Frankfort-on-Main, Germany. June 26, 1931, No. 18555. Convention date, July 26, 1930. Addition to 376,479. [Class 2 (iii).] Resinous polymerization products are manufactured by causing a body capable of reacting with carboxylic acid or anhydride groups to act upon a product obtained by polymerizing a non-resinous compound capable of being polymerized and containing a non-conjugated olefinic linkage in admixture with an ethylene-alpha- #-dicarboxylic acid or anhydride. Alternatively a mixture of the olefinic compound and the ethylene-alpha-#-dicarboxylic acid or anhydride is subjected simultaneously to polymerization and to reaction with a body capable of reacting with carboxylic acid or anhydride groups. The carboxylic acid or anhydride groups in the polymerization products are, for example, capable of forming salts, e.g. with alkalis or alkaline earths, they may be alkylated or amidated, or may be caused to react with polyhydric or polymerized alcohols, e.g. glycol, glycerine, polyglycerine or polyvinyl alcohol, with monohydric or polyhydric phenols or with primary, secondary or tertiary amines. It is also possible to introduce new groups capable of further transformation, e.g. by using for the reactions phenols or amines substituted by nitro, amino, hydroxyl, carboxylic or sulphonic groups or halogen. In examples : (1) the product of Example 1 of the parent Specification is heated at 150 C. in a bomb with absolute ethanol, yielding a colourless viscous solution ; (2) a mixture of vinyl ethyl ether, maleic anhydride, glycol and acetone with the addition of benzoyl superoxide is gently boiled for 12 hours, after which the acetone and unaltered ether are removed leaving a colourless to white mass ; (3) a mixture of styrene, maleic anhydride and glycerine is heated in an autoclave at 120 C. to produce a hard white mass ; (4) a mixture of styrene, maleic anhydride and phenol is heated in an autoclave at 140 C., producing a brownish.yellow solid; (5) a mixture of vinyl acetate, maleic anhydride and ethanol with the addition of benzoyl superoxide is boiled for some hours, yielding a whitish, very elastic, fibrous mass ; (6) the product of Example 1 of the parent Specification is dissolved in methanol, mixed with an ethyl alcoholic solution of a polyvinyl alcohol made by partially saponifying polyvinyl acetate and still containing about one-third of the original content of acetyl groups, and the solvent is eliminated by vacuum distillation, yielding a light-coloured horny mass which becomes insoluble when heated to 130-160 C. ; (7) the product obtained by polymerizing a mixture of styrene and maleic anhydride is heated in an autoclave to 130-150 C. with the fatty alcohol obtained by catalytic reduction of palmitic acid, and the excess of fatty alcohol is extracted with hot alcohol, leaving a whitishyellow gummy mass ; solutions of the product are useful for impregnating textile fibres ; (8) a mixture of acrylic acid, maleic anhydride, acetone and the fatty alcohol obtained from linseed oil, methyl iodide and magnesium by the Grignard reaction is boiled until viscous and cooled to give a gelatinous mass which is comminuted and freed from acetone and unchanged fatty alcohol by means of hot ethanol; the product is similar to that of (7) and may be likewise used for impregnating textile fibres ; (9) a mixture of vinyl chloride and maleic anhydride is polymerized, the product heated at 100 C. with cyclohexanol and tetrachlorethane and the volatile portions are eliminated by steam distillation yielding a whitish mass resembling cellulose.