Patent GB-357667-A (GB)
Title: Artificial materials containing cellulose derivatives
IPC: C08K5/105
Filed: 1930-07-08
Abstract: Coating-compositions contain an organic derivative of cellulose and a halogen derivative of an aromatic ester of a lower fatty acid.  A bromine compound is preferred, a suitable ester being tribromphenyl acetate.  Halogenated esters of xylenols and naphthols and their homologues may also be used.  From 2-25 parts of the halogen compound may be incorporated with 100 parts of the cellulose derivative, which may be an organic ester or ether; good fire resistance is obtained with 2, 3, or 5 per cent of phenyl acetate in the case of cellulose acetate.  The compositions may contain volatile solvents, medium or high-boiling solvents, plasticizers, or pigments.  Suitable solvents are acetone, ethylene dichloride, ether, benzene, toluene, ethyl acetate, ethyl lactate, and tetrachlorethane.  For films, one part of cellulose derivative may be dissolved in 3-6 parts of acetone.  The plasticizer may be triacetin, monomethylsulphonamide, paratoluenesulphonamide, diethyl phthalate, dibutyl phthalate, dibutyl tartrate, or a substance having fire-resistant properties, for instance triphenyl or tricresyl phosphate.  The products are fast to light.  Specification 313,134, [Class 95, Paints &c.], is referred to.  The Specification as open to inspection under Sect. 91 (3) (a) includes the use of cellulose nitrate and cellulose derivatives in general.  This subject-matter does not appear in the Specification as accepted.ALSO:Fire-resistant films, coating compositions and plastic materials contain an organic derivative of cellulose and a halogen derivative of an aromatic ester of a lower fatty acid.  A bromine compound is preferred, a suitable ester being tribromphenyl acetate, obtained by brominating phenyl acetate or by acetylating tribromphenol with acetic acid and anhydride and a little sulphuric acid.  Halogenated esters of xylenols and naphthols and their homologues may also be used.  From 2 to 25 parts of the halogen compound may be incorporated with 100 parts of the cellulose derivative, which may be an organic ester or ether; good fire resistance is obtained with 2, 3, or 5 per cent of phenyl acetate in the case of cellulose acetate.  The compositions may contain volatile solvents, medium or high-boiling solvents, plasticizers, or pigments. Suitable solvents are acetone, ethylene dichloride, ether, benzene, toluene, ethyl acetate, ethyl lactate, and tetrachlorethene.  For films, one part of cellulose derivative may be dissolved in 3 to 6 parts of acetone.  The plasticizer may be triacetin, monomethylsulphonamide, paratoluenesulphonamide, diethyl phthalate, dibutylphthalate, dibutyl tartrate, or a substance having fire-resistant properties, for instance triphenol or tricresyl phosphate.  The products are fast to light.  Specification 313,134 [Class 2 (ii), Cellulose &c.], is referred to.  The Specification as open to inspection under Sect. 91 (3) (a) refers to cellulose derivatives in general and also to cellulose nitrate in particular. This subject-matter does not appear in the Specification as accepted.ALSO:Plastic compositions contain an organic derivative of cellulose and a halogen derivative of an aromatic ester of a lower fatty acid.  A bromine compound is preferred, a suitable ester being tribromphenylacetate.  Halogenated esters of xylenols and naphthols and their homologues may also be used.  From 2 to 25 parts of the halogen compound may be incorporated with 100 parts of the cellulose derivative, which may be an organic ester or ether; good fire resistance is obtained with 2, 3, or 5 per cent of phenyl acetate in the case of cellulose acetate.  The compositions may contain volatile solvents, medium or high-boiling solvents, plasticizers, or pigments. Suitable solvents are acetone, ethylene dichloride, ether, benzene, toluene, ethyl acetate, ethyl lactate, and tetrachlorethane.  The plasticizer may be triacetin, monomethylsulphonamide, paratoluenesulphonamide, diethyl phthalate, dibutyl phthalate, dibutyl tartrate, or a substance having fire-resistant properties, for instance triphenyl or tricresyl phosphate.  The products are fast to light. Specification 313,134, [Class 70, Indiarubber &c.], is referred to.  The Specification as open to inspection under Sect. 91 (3) (a) includes the use of cellulose nitrate and cellulose derivatives in general.  This subject-matter does not appear in the Specification as accepted.