Patent GB-344405-A (GB)
IPC: C08L67/08
Filed: 1929-10-28
Abstract: Alkyd resins modified by the addition of terpenes may be used for coating materials.  The application to coating refrigerators or other containers which are continually subjected to moisture during use is referred to.  The Specification as open to inspection under Sect. 91 (3) (a) describes causing a reaction to occur by using a turpene compound such as turpentine as a suspending medium for an alkyd resin in the A or B- stage, or a mixture of these resins.  A finely-divided resin produced from phthalic anhydride and glycerine is suspended in turpentine to form coatings from which the turpentine evaporates to yield, especially upon baking, a resin of changed colour and more water-resistant by chemical reaction of the resin with the turpentine.  This subject-matter does not appear in the Specification as accepted.ALSO:A modified alkyd resin resistant to water is produced by adding a terpene to the reactants or by causing it to react with an alkyd resin which is in the fusible soluble condition. The reactants or the alkyd condensation product may include an acid derived from a drying oil such as oleic acid or a monobasic acid radicle.  As terpenes suitable for modifying alkyd resins are specified isoprene, the true terpenes, the sesquiterpenes such as occur in cedar and citronella oils, the diterpenes such as occur in limonene, and camphor compounds.  Specifications 299,424 and 306,924, [both in Class 2 (iii), Dyes &c.], are referred to.  The following examples are described, the parts being by weight.  (1) Phthalic anhydride and terpene hydrate are heated together until at 200 DEG C. a clear liquid is obtained; glycerine is then added and the heating continued to 251 DEG  C. until a sample hardens quickly on cooling.  (2) A clear dark red resin is obtained by reacting together phthalic anhydride, white turpentine gum and glycerine, heated to 200 DEG  C.  (3) A mixture of phthalic anhydride, borneol and glycerine are heated together to yield a dark red resin which quickly reaches the B- stage on heating at 150 DEG  C.  (4) A light brown resin is obtained from phthalic anhydride, camphoric acid and glycerine.  (5) Gutta-percha is blended with phthalic anhydride by heating at about 200 DEG  C.; addition of glycerine or a glycol derivative and continued heating produces a transparent resin which is more resilient than an alkyd resin without the incorporation of gutta-percha.  (6) Phthalic anhydride, glycerine and diterpilene or its additive compounds are caused to react together.  The alkyd resins modified by the addition of terpenes may be blended or compounded with cellulose compositions, natural gums or artificial resins, oils, and dyes, and they may be used as coating materials, cementing materials, and as binders for making moulded materials. The application to coating refrigerators or other containers which are continually subjected to moisture during use is also referred to. The Specification as open to inspection under Sect. 91 (3) (a) comprises also causing a reaction to occur by using a turpene compound such as turpentine as a suspending medium for an alkyd resin in the A or B- stage, or a mixture of these resins.  A finely-divided resin produced from phthalic anhydride and glycerine is suspended in turpentine to form coatings from which the turpentine evaporates to yield, especially when baking, a resin of changed colour and more water-resistant by chemical reaction with the turpentine.  This subject-matter does not appear in the Specification as accepted.ALSO:Containing artificial resins.-A modified alkyd resin resistant to water is produced by adding a terpene to the reactants or by causing it to react with an alkyd resin which is in the fusible soluble condition.  The reactants or the alkyd condensation product may include an acid derived from a drying oil such as oleic acid or a monobasic acid radicle.  As terpenes suitable for modifying alkyd resins are specified isoprene, the true terpenes, the sesquiterpenes such as occur in cedar and citronella oils, the diterpenes such as occur in limonene, and camphor compounds. Specifications 299,424 and 306,924, [both in Class 2 (iii), Dyes &c.], are referred to.  The following examples are described, the parts being by weight: (1) Phthalic anhydride and terpene hydrate are heated together until at 200 DEG  C. a clear liquid is obtained; glycerine is then added and the heating continued to 251 DEG  C. until a sample hardens quickly on cooling.  (2) A clear dark red resin is obtained by reacting together phthalic anhydride, white turpentine gum and glycerine, heated to 200 DEG  C.  (3) A mixture of phthalic anhydride, borneol and glycerine are heated together to yield a dark red resin which quickly reaches the B-stage on heating at 150 DEG  C.  (4) A light-brown resin is obtained from phthalic anhydride, camphoric acid and glycerine.  (5) Guttapercha is blended and phthalic anhydride by heating at about 200 DEG  C.; addition of glycerine or a glycol derivative and continued heating produces a transparent resin which is more resilient than an alkyd resin without the incorporation of guttapercha.  (6) Phthalic anhydride, glycerine and diterpilene or its additive compounds are caused to react together.  The alkyd resins modified by the addition of terpenes may be blended or compounded with cellulose compositions, natural gums, or artificial resins, oils, and dyes, and they may be used as coating materials, cementing materials, and as binders for making moulded materials. The application to coating refrigerators or other containers which are continually subjected to moisture during use is also referred to.