Patent GB-589695-A (GB)
Title: Improvements in and relating to synthetic resinous condensation products
IPC: C08G14/06
Filed: 1943-05-18
Abstract: Resinous condensation products are prepared by heating together an aldehyde (including polymeric aldehydes, hydroxy aldehydes and aldehyde-addition products which yield aldehyde under the reaction conditions) and diamino-s-triazinyl, chloro or bromo, carbomethoxy ethyl sulphide.  The triazine derivative may have the formula <FORM:0589695/IV/1> or <FORM:0589695/IV/2> where X = Cl or Br, and may be prepared by alkaline condensation of thioammeline with a -b -dichloro or dibromo carbomethoxy ethane.  The new products are themselves useful as resins or may be incorporated into or prepared together with acid curing phenoplasts or aminoplasts.  The condensation may be effected under acid, neutral or alkaline conditions, a list of materials being given which may be used to adjust the pH value of the reaction medium.  According to the examples (1), (2) and (3) diamino - s - triazinyl - chloro - carbomethoxyethyl sulphide is incorporated into a resin by heating with a mixture of urea, formaldehyde and alkali or with a partial condensation product of those ingredients.  Moulding compositions are prepared by mixing the resulting resinous syrups with a -cellulose and zinc stearate, drying and grinding.  Examples (4), (5) are similar, but employ diamino - s - triazinyl - bromo - carbo - methoxyethylsulphide. In examples (6), (7), thiourea replaces urea in conjunction with the chlorine containing triazine derivative. Examples (8), (9) and (10) describe the use of the triazine derivatives as curing catalysts in melamine-formaldehyde condensation products.  In example (11), diamino-s-triazinyl chlorocarbomethoxyethyl sulphide and formaldehyde are condensed together and the product mixed with a -cellulose to form a moulding composition.  Example (12) employs the bromine derivative.  Examples (13) and (14) describe the preparation of casting resins by dehydration of mixtures of the triazine derivative and glycerine with a product prepared by alkaline condensation of phenol with formaldehyde.  In examples (15), (16), the condensation products of examples (11) and (12) are incorporated with a product prepared by alkaline condensation of urea with formaldehyde and a -cellulose and zinc stearate are added to yield, after drying and grinding, moulding compositions.  Examples (17) and (18) are similar with melamine replacing the urea.  Examples (19) and (20) are also similar to (15) and (16), the urea-formaldehyde condensation product being prepared by heating dimethylol urea in aqueous alkaline solution, while examples (20) and (21) are similar to examples (17), (18), the melamine-formaldehyde condensation product being prepared by heating trimethylol melamine in alkaline solution.  In examples (23) and (24), the condensation products of examples (11), (12) are heated in alkaline solution with 1-phenyl guanazole and formaldehyde, and moulding compositions prepared by admixture of a -cellulose and zinc stearate.  As open to public inspection under Sect. 91, the Specification covers the use of any triazine derivative corresponding with the general formula <FORM:0589695/IV/3> where n = 1 or 2, X is a halogen atom and R may be hydrogen, or a hydrocarbon or halohydrocarbon radical.  Long lists are given of radicals which R may represent and of suitable triazine derivatives covered by the general formula.  Lists are also given of aldehyde and aldehyde addition products which may be employed. The products may be incorporated into any acid-curing thermosetting resin, many of which are specifically mentioned. This subject-matter forms no part of the Specification as accepted.