Patent GB-418506-A (GB)
Title: Improvements in or relating to plasticised compositions and articles made therefrom
IPC: C08K5/12
Filed: 1933-02-17
Abstract: Compositions comprise cellulose derivatives and/or synthetic resins which are plasticized by the addition of oxyalkyl alkoxyalkyl esters of polycarboxylic acids.  The plasticizers are prepared by interaction of (1) glycols and mono-esters of polycarboxylic acids with mono-ethers of glycols; (2) mono-ethers of glycols and mono-esters of polycarboxylic acids with glycols, (3) halohydrins and salts of partial esters of polycarboxylic acids with mono-ethers of glycols; (4) monohalogen-alkylethers and salts of partial esters of polycarboxylic acids with glycols. Polycarboxylic acids mentioned are phthalic acid and its halogen or alkyl substitution products; malonic, glutaric, succinic and tartaric acids and their substitution products.  The ester groups may contain halogen.  If esters are used which are acid or develop acidity, anti-acid bodies such as tetramethylurea may be added to the compositions.  The compositions, which may also contain solvents and diluents, natural resins, other plasticizers and filling materials, are useful in the manufacture of moulding powders and moulded articles, filaments, films, lacquers, varnishes, coating compositions, artificial paper and leather, and splinterless glass.  The cellulose derivative may comprise the nitrate, acetate, formate, propionate, butyrate or other ester, or an ether such as methyl-, ethyl- or benzyl-cellulose.  The use of cellulose esters of high viscosity (see Specification 207,562, [Class 2 (ii)]), is referred to.  Resins mentioned are the artificial resins from phenol-aldehyde, diphenylolpropanealdehyde, and urea or thiourea-formaldehyde condensation and from vinyl ester polymerization, or the natural resins shellac and dammar.  A large number of solvents, including latent solvents, are specified.  As examples of other plasticizers, reference is made to glycerin, triacetin, tributyl phosphate, triphenyl phosphate, tricresyl phosphate, dibutyl tartrate, triphenylolpropane, and sulphonamides or sulphonanilides.  Non-inflammators such as tribromacetanilide may also be present.  Pearl essence and powdered metals are specified as filling materials.  The plasticizer may be introduced into the product in any way, special reference being made to the methods described in Specifications 354,860 and 354,861, [both in Group V]. An example is given of the incorporation of an alcohol-benzene solution of b  - oxyethyl - (b  - methoxyethyl) - phthalate with acetone-soluble cellulose acetate.  According to the Provisional Specification, the plasticizers are described as unsymmetrical esters of polycarboxylic acids containing at least one free or etherified residue of a dihydric alcohol and if desired a hydrocarbon residue. A number of specific instances of such compounds are given, together with their methods of preparation.ALSO:Compositions comprise cellulose derivatives and/or synthetic resins which are plasticized by the addition of oxyalkyl alkoxyalkyl esters of polycarboxylic acids.  Polycarboxylic acids mentioned are phthalic acid and its halogen or alkyl substitution products; malonic, glutaric succinic and tartaric acids and their substitution products.  The ester groups may contain halogen.  If esters are used which are acid or develop acidity, anti-acid bodies such as tetramethylurea may be added to the compositions. The compositions, which may also contain solvents and diluents, natural resins, other plasticizers and filling materials, are useful in the manufacture of moulding powders and moulded articles, filaments, films, lacquers, varnishes, coating compositions, artificial paper and leather, and splinterless glass. The cellulose derivative may comprise the nitrate, acetate, formate, propionate, butyrate or other ester, or an ether such as methyl-, ethyl-, or benzyl-cellulose.  The use of cellulose esters of high viscosity (see Specification 207,562, [Class 2 (ii)], is referred to. Resins mentioned are the artificial resins from phenol-aldehyde, diphenylolpropane-aldehyde, and urea or thiourea-formaldehyde condensation and from vinyl ester polymerization, or the natural resins shellac and dammar.  A large number of solvents, including latent solvents, are specified.  As examples of other plasticizers, reference is made to glycerin, triacetin, tributyl phosphate, triphenyl phosphate, tricresyl phosphate, dibutyl tartrate, triphenylolpropane, and sulphonamides or sulphonanilides. Non-inflammators such as tribromacetanilide may also be present. Pearl essence and powdered metals are specified as filling materials. The plasticizer may be introduced into the product in any way, special reference being made to the methods described in Specifications 354,860 and 354,861.  An example is given of the incorporation of an alcohol-benzene solution of b -oxyethyl-(b -methoxyethyl)-phthalate with acetone-soluble cellulose acetate. According to the Provisional Specification, the plasticizers are described as unsymmetrical esters of polycarboxylic acids containing at least one free or etherified residue of a dihydric alcohol and if desired a hydrocarbon residue.  A number of specific instances of such compounds are given, together with their methods of preparation.