Patent GB-753568-A (GB)
Title: Oxidative-drying preparations containing aminotriazine-formaldehyde condensates and products made therefrom
IPC: C08F16/28
Filed: 1952-11-26
Abstract: An oxidative-drying preparation comprises a metallic drier and a hardenable formaldehyde condensation product of an aminotriazine containing at least two NH2 groups, in which product at least two methylol groups are etherified with allyl groups, or a product obtained by polymerizing a mixture of such a condensation product and a polymerizable unsaturated compound, such as vinyl acetate, styrene, methacrylic acid ester, an unsaturated alkyd resin, an ester resin or a drying oil.  Driers specified are those of Co, Ni, Fe, Cr, Al, Ca and Zn.  Drying may be further accelerated by addition of peroxides, e.g. benzoyl-, ditertiary butyl- and lauryl peroxides and hydroxycyclohexyl hydroperoxide. Solvents, softeners, fillers and pigments may be added.  The preparations may be added to compositions for coating, casting, pressing, laminating, for use as a putty, impregnating, cementing and adhesion, and in particular to drying oils, e.g. linseed, dehydrated castor, soya bean and wood oils; alkyd resins, styrolized oils, nitrocellulose, acetyl-cellulose, ethyl cellulose, polyvinyl acetate, polyvinyl acetals and polystyrenes. The allyl ethers of methylol-aminotriazines (e.g. melamine, N-phenyl melamine, benzoguanamine, acetoguanamine, formoguanamine, ammeline and 2 : 4-diamino-6-chloro-1 : 3 : 5-triazine) may be made in known manner.  Mixed ethers containing saturated alkyl ether groups as well as allyl ether groups may be made, for example by partial re-etherification of methylol aminotriazine ethers containing saturated alkyl ether groups with allyl or methallyl alcohol, or by partial re-etherification of methylol aminotriazine allyl ethers having a high content of allyl groups with mono- or poly-hydric alcohols having a boiling point higher than allyl alcohol, e.g. butanol, ethylene glycol, octadecyl alcohol, myricyl alcohol, incompletely etherified or esterified glycerine or other substances containing OH groups. In Example 9, a brittle resinous polyglycidyl ether, obtained by reacting 4:41 - dioxydiphenyl - dimethylmethane with epichlorhydrin in the presence of caustic soda, is reacted with dehydrated castor oil fatty acid and the resulting partially esterified polyether is reacted with methylol-melamine allyl ether after the addition of formic acid.  The preparations, in known manner, of allyl ethers of methylol-melamine (I, III, IV), -urea (II for comparison), -benzoguanamine (V) and -acetoguanine (VI) are also described.  In examples, drying preparations are composed of (1) products I, III and IV mixed separately with Co naphthenate and toluene; (2) product I, xylene and Pb and/or Co naphthenate with or without benzoyl peroxide; (3) product I and Pb and Co naphthenates with (a) linseed oil, (b) dehydrated castor oil, (c) air-drying alkyd resin, or (d) styrene-modified oil; (4) product I, a drier and (a) polyvinyl acetal, (b) polystyrene, (c) nitrocellulose, or (d) polyvinyl formal; (5) products V and VI separately mixed with white spirit and Co naphthenate; (6) a solution in white spirit and xylene of Co and Pb naphthenates and (a) a polymerizate of product I, varnish linseed oil and styrenes, or (b) a polymerisate of product I, dehydrated castor oil and styrene; (7) allyl-stearyl ether of methylol melamine, toluene and Co naphthenate; (8) the reaction product of product I and linseed oil fatty acid diglyceride, white spirit and Co and Pb naphthenates; (9) the reaction product of a partially esterified polyglycidyl ether and product I, solvent naphtha and cobalt naphthenate; (10) product I, styrene, Co naphthenate and an unsaturated polyester, obtained by reaction of maleic and phthalic anhydride, glycol and benzyl alcohol; and (11) product I, Co naphthenate, benzoyl peroxide and a polyester obtained from diethylene glycol, fumaric and sebacic acids, and may or may not contain paraffin wax.  Specification 543,360 is referred to.