Patent GB-355827-A (GB)
Title: Process for the combination of hardenable phenol-aldehyde-condensation-products with wood-oil
IPC: H02K27/06
Filed: 1930-05-30
Abstract: The invention according to the parent Specification is modified by causing wood-oil to combine with the hardenable phenol-aldehyde condensation product in the resole stage in the presence of a solvent and at a temperature (for example 130-160 DEG  C.) sufficient to effect the combination.  The products constitute varnishes which harden quickly at a moderate temperature. Derivatives of resoles, such as their acetyl or benzyl derivatives, may be combined with the wood-oil.  Other resins, e.g. caoutchouc, may be dissolved in the wood-oil which is to be combined with the resole.  According to the examples, (1) wood-oil and a resole obtained from phenol or cresol, formaldehyde and ammonia, are heated with methylcyclohexanol at 160 DEG  C.; (2) the resole and wood-oil and a solvent such as oil of turpentine are heated at 130 DEG  C.; (3) the resole, wood-oil, and isopropyl spirit are heated under pressure at 130 DEG  C.; (4) the ingredients according to the previous example are heated under reflux to effect reaction; (5) the wood-oil and resole are combined in the presence of a solvent mixture; (6) the resole is acetylized before mixing with wood-oil and solvent methylcyclohexanol, the oil and resole derivative being then heated under reflux; (7) a resole obtained from cresol is heated with wood-oil and acetone in an autoclave for 3 hours at 130 DEG  C. at a pressure of 7 atmospheres and the finished varnish may be diluted with ether and/or mixed with siccative.  Specifications 295,335, [Class 95, Paints &c.], and 347,737 are referred to.ALSO:Phenol-aldehyde condensation products.-The invention according to the parent Specification is modified by causing wood-oil to combine with the hardenable phenol-aldehyde condensation product in the resole stage in the presence of a solvent and at a temperature (for example 130 DEG  to 160 DEG  C.) sufficient to effect the combination.  The products constitute varnishes which harden quickly at a moderate temperature. The solvent can be removed by distillation and the solid product, with or without fillers and other additions, as described in the parent Specification, used as a mouldable composition.  Flexible plates or discs formed of the reaction product are stated to be useful for windscreens of motor-cars.  Derivatives of resoles, such as their acetyl or benzyl derivatives, may be combined with the wood-oil.  Other resins may be dissolved in the wood-oil which is to be combined with the resole.  According to the examples, (1) wood-oil and a resole obtained from phenol or cresol, formaldehyde, and ammonia, are heated with methylcyclohexanol at 160 DEG  C.; (2) the resole and wood-oil and a solvent such as oil of turpentine are heated at 130 DEG  C.; (3) the resole, wood-oil and isoproyl spirit are heated under pressure at 130 DEG  C.; (4) the ingredients according to the previous example are heated under reflux to effect reaction; (5) the wood-oil and resole are combined in the presence of a solvent mixture; (6) the resole is acetylized before mixing with wood-oil and solvent methylcyclohexanol, the oil and resole derivative being then heated under reflux; (7) a resole obtained from cresol is heated with wood-oil and acetone in an autoclave for 3 hours at 130 DEG  C. at a pressure of 7 atmospheres, and the finished varnish may be diluted with ether and/or mixed with siccative. Specifications 295,335, [Class 22, Cements &c.], and 347,737 are referred to.ALSO:The invention according to the parent Specification is modified by causing wood-oil to combine with the hardenable phenol-aldehyde condensation product in the resole stage in the presence of a solvent and at a temperature (for example, 130 DEG  to 160 DEG  C.) sufficient to effect the combination.  The products constitute varnishes which harden quickly at a moderate temperature. The solvent can be removed by distillation and the solid product, with or without fillers and other additions, as described in the parent Specification, used as a mouldable composition.  Flexible plates or discs formed of the reaction product are stated to be useful for wind-screens of motor-cars. Derivatives of resoles, such as their acetyl or benzyl derivatives, may be combined with the wood-oil.  Other resins may be dissolved in the wood-oil which is to be combined with the resole.  According to the examples, (1) wood-oil and a resole obtained from phenol or cresol, formaldehyde and ammonia, are heated with methylcyclohexanol at 160 DEG  C.; (2) the resole and wood-oil and a solvent such as oil of turpentine are heated at 130 DEG  C.; (3) the resole, wood-oil and isopropyl spirit are heated under pressure at 130 DEG  C.; (4) the ingredients according to the previous example are heated under reflux to effect reaction; (5) the wood-oil and resole are combined in the presence of a solvent mixture; (6) the resole is acetylized before mixing with wood-oil and solvent methylcyclohexanol, the oil and resole derivative being then heated under reflux; (7) a resole obtained from cresol is heated with wood-oil and acetone in an autoclave for 3 hours at 130 DEG  C. at a pressure of 7 atmospheres, and the finished varnish may be diluted with ether and/or mixed with siccative. Specifications 295,335, [Class 22, Cements &c.], and 347,737, [Group IV], are referred to.