Patent GB-496166-A (GB)
Title: Improvements in the manufacture of plastic dispersions of the water-in-oil type
IPC: A23D7/02
Filed: 1938-01-04
Abstract: In the manufacture of dry plastic dispersions of the water-in-oil type according to the parent Specification, for use as foodstuffs or in their manufacture, e.g. margarine, cake batters, shortenings &c., by dispersing water or aqueous liquids in melted fats or oil-fat mixtures melting above 10 DEG  C., cooling the product and plastifying it if necessary by rolling and/or kneading, the emulsifying-agents consist of condensates or polymerizates of polyhydric alcohols esterified with higher fatty acids containing at least 8 carbon atoms, said esters containing at least one unsubstituted hydroxyl group of the alcohol condensate or polymerizate, and at least one polymerized and/or oxidized fatty acid radicle.  A suitable emulsifying-agent may be prepared by heating water-free glycerol to 260 DEG  C. in an atmosphere of carbon dioxide or other inert gas in the presence of a catalyst, e.g. sodium acetate for about 72 hours.  1 part of the yellow polymerizate is added to 3 parts of soya oil and heated to 260 DEG  C. in an inert atmosphere for about 1 hour in order to esterify the polymerizate.  The product is cooled and centrifuged to remove free glycerol or polymerizate which may be present, and subsequently oxidized and/or polymerized in the manner described in Specifications 178,885, 187,298, and 187,299, [all in Class 81 (i)].  The glycerol polymerizate may be replaced by glycerol condensates such as diglycerol and triglycerol or by polymerizates or condensates of other polyhydric alcohols which contain at least two hydroxy groups.  The soya oil may also be replaced by other drying or semi-drying oils and/or fats or mixtures with non-drying oils and/or fats, with fatty acids, or with the polymerized and/or oxidized oils or fats obtained according to the above Specifications or the fatty acids obtained therefrom.  The dispersing agent obtained as above may be freed from esters which do not contain hydroxyl groups by treatment with solvents, e.g. ethyl alcohol in which such esters are insoluble.  Other emulsifying-agents, e.g. the agents described in the parent Specification, mono- or di-glycerides of other fatty acids, esters of polyglycerols with saturated fatty acids or lecithin may be used in addition.ALSO:In the manufacture of dry plastic dispersions of the water-in-oil type according to the parent Specification, the emulsifying agents consist of condensates or polymerizates of polyhydric alcohols esterified with higher fatty acids containing at least 8 carbon atoms, said esters containing at least one unsubstituted hydroxyl group of the alcohol condensate or polymerizate, and at least one polymerized and/or oxidized fatty acid radicle.  A suitable emulsifying agent may be prepared by heating water-free glycerol to 260 DEG  C in an atmosphere of carbon dioxide or other inert gas in the presence of a catalyst, e.g. sodium acetate for about 72 hours.  One part of the yellow polymerizate is added to 3 parts of soya oil and heated to 260 DEG  C. in an inert atmosphere for about 1 hour in order to esterify the polymerizate.  The product is cooled and centrifuged to remove free glycerol or polymerizate which may be present, and subsequently oxidized and/or polymerized in the manner described in Specifications 178,885, 187,298, and 187,299, [all in Class 81 (i)].  The glycerol polymerizate may be replaced by glycerol condensates such as diglycerol and triglycerol or by polymerizates or condensates of other polyhydric alcohols which contain at least two hydroxy groups.  The soya oil may also be replaced by other drying or semi-drying oils and/or fats or mixtures with non-drying oils and/or fats, or with fatty acids, or with the polymerized and/or oxidized oils or fats obtained according to the above Specifications or the fatty acids obtained therefrom.  The dispersing-agent obtained as above may be freed from esters which do not contain hydroxyl groups by treatment with solvents, e.g. ethyl alcohol in which such esters are insoluble.ALSO:In the manufacture of dry plastic dispersions of the water-in-oil type according to the parent Specification for use as foodstuffs or in their manufacture, e.g. margarine, cake batters, shortenings, &c., by dispersing water or aqueous liquids in melted fats or oil-fat mixtures melting above 10 DEG  C., cooling the product and plastifying it if necessary by rolling and/or kneading, the emulsifying agents consist of condensates or polymerizates of polyhydric alcohols esterified with higher fatty acids containing at least 8 carbon atoms, said esters containing at least one unsubstituted hydroxyl group of the alcohol condensate or polymerizate, and at least one polymerized and/or oxidized fatty acid radicle.  A suitable emulsifying-agent may be prepared by heating water-free glycerol to 260 DEG  C. in an atmosphere of carbon dioxide or other inert gas in the presence of a catalyst, e.g. sodium acetate for about 72 hours.  One part of the yellow polymerizate is added to 3 parts of soya oil and heated to 260 DEG  C. in an inert atmosphere for about 1 hour in order to esterify the polymerizate.  The product is cooled and centrifuged to remove free glycerol or polymerizate which may be present, and subsequently oxidized and/or polymerized in the manner described in Specifications 178,885, 187,298, [both in Class 84], and 187,299, [Class 81 (i)]. The glycerol polymerizate may be replaced by glycerol condensates such as diglycerol and triglycerol or by polymerizates or condensates of other polyhydric alcohols which contain at least two hydroxy groups.  The soya oil may also be replaced by other drying or semi-drying oils and/or fats or mixtures with non-drying oils and/or fats, or with fatty acids, or with the polymerized and/or oxidized oils or fats obtained according to the above Specifications or the fatty acids obtained therefrom.  The dispersing agent obtained as above may be freed from esters which do not contain hydroxyl groups by treatment with solvents, e.g. ethyl alcohol in which such esters are insoluble.  Other emulsifying-agents, e.g. the agents described in the parent Specification, mono- or di-glycerides of other fatty acids, esters of polyglycerols with saturated fatty acids or lecithin may be used in addition.