Patent GB-243030-A (GB)
Title: Process of dissolving or extracting fats, oils or allied bodies
IPC: C11B1/10
Filed: 1925-11-17
Abstract: The Specification as open to inspection under Sect. 91 (3) (a) describes the use of methylene chloride, alone or preferably mixed with solvents or non-solvents, as a solvent for organic substances such as cellulose esters.  Acetone-soluble cellulose acetate with or without an admixture of chloroform-soluble acetate is dissolved in the cold in methylene chloride mixed with methyl alcohol or with a solvent or a mixture of a solvent and a non-solvent for cellulose acetate, or with mixtures of two non-solvents which together have a solvent action.  Specified additions to the methylene chloride comprise acetone, formic and acetic esters, benzine and triacetin as well as methyl alcohol or its homologues.  If desired the methylene chloride may be added to solutions or partial solutions of cellulose acetates in other solvents, for increasing non-inflammability and solvent power. This subject-matter does not appear in the Specification as accepted.ALSO:The Specification as open to inspection under Sect. 91 (3) (a) describes the use of methylene chloride, alone, or preferably mixed with solvents or non-solvents as a solvent for resins, artificial resins, animal and vegetable products, and organic substances such as cellulose esters.  Specified additions to methylene chloride comprise acetone, formic and acetic esters, benzene, benzine, and methyl alcohol or its homologues.  The methylene chloride, with or without the admixtures, may be used for making adhesives.  This subject-matter does not appear in the Specification as accepted.ALSO:The Specification as open to inspection under Sect. 91 (3) (a) describes the use of methylene chloride, alone, or preferably with solvents or non-solvents, as a solvent for alkaloids.  Specified additions to methylene chloride comprise acetone, formic and acetic esters, benzene, benzine, methyl alcohol or its homologues.  Methylene chloride with or without the admixtures may be used for extracting or separating purposes.  The subject-matter does not appear in the Specification as accepted.ALSO:Methylene chloride, alone or preferably mixed with solvents is used for dissolving or extracting fats, oils, mineral oils, or allied substances such as fatty acids or their compounds. Specified additions to the methylene chloride comprise alcohol acetone, acetic ether, benzene &c.  Methylene chloride, with or without the admixtures, may be used for removing animal and vegetable products from fibres &c.  It may also be used as a cleaner or spot-removing means for fabrics, and for this purpose an addition of alcohol, benzene and benzine is preferred.ALSO:Methylene chloride, alone or preferably mixed with solvents, is used for dissolving or extracting fats, oils, mineral oils, or allied substances such as fatty acids or their compounds. Suitable solvents for addition to the methylene chloride are alcohol, acetone, acetic ether, benzene &c. If used alone the methylene chloride may be gently heated.  The material may be used for removing fats, oils &c. from fires, or as a cleaner or spot-removing means for fabrics, and for this purpose an addition of alcohol, benzene and benzine is preferred.