US2469446A - Mixed esters of fatty acids - Google Patents
Mixed esters of fatty acids Download PDFInfo
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- US2469446A US2469446A US548626A US54862644A US2469446A US 2469446 A US2469446 A US 2469446A US 548626 A US548626 A US 548626A US 54862644 A US54862644 A US 54862644A US 2469446 A US2469446 A US 2469446A
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- US
- United States
- Prior art keywords
- acid
- fatty acids
- caprylic
- acids
- mixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 150000002148 esters Chemical class 0.000 title description 23
- 235000014113 dietary fatty acids Nutrition 0.000 title description 19
- 239000000194 fatty acid Substances 0.000 title description 19
- 229930195729 fatty acid Natural products 0.000 title description 19
- 150000004665 fatty acids Chemical class 0.000 title description 19
- 239000000203 mixture Substances 0.000 description 44
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical class CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 27
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical class CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 description 24
- 239000002253 acid Substances 0.000 description 13
- 239000004014 plasticizer Substances 0.000 description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 10
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 description 9
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical class CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 9
- MTHSVFCYNBDYFN-UHFFFAOYSA-N anhydrous diethylene glycol Natural products OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 8
- 239000005635 Caprylic acid (CAS 124-07-2) Substances 0.000 description 7
- 239000000020 Nitrocellulose Substances 0.000 description 7
- 150000007513 acids Chemical class 0.000 description 7
- 230000007935 neutral effect Effects 0.000 description 7
- 229920001220 nitrocellulos Polymers 0.000 description 7
- 229960002446 octanoic acid Drugs 0.000 description 7
- 235000013772 propylene glycol Nutrition 0.000 description 7
- 229920001515 polyalkylene glycol Polymers 0.000 description 6
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 5
- 239000005977 Ethylene Substances 0.000 description 5
- 239000001569 carbon dioxide Substances 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 235000019198 oils Nutrition 0.000 description 5
- -1 stearic acid ester Chemical class 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 235000013162 Cocos nucifera Nutrition 0.000 description 3
- 244000060011 Cocos nucifera Species 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 235000021588 free fatty acids Nutrition 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 239000005639 Lauric acid Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 241000272534 Struthio camelus Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000011354 acetal resin Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000009874 alkali refining Methods 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 238000004508 fractional distillation Methods 0.000 description 1
- 229910000286 fullers earth Inorganic materials 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 235000019488 nut oil Nutrition 0.000 description 1
- 239000010466 nut oil Substances 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid group Chemical group C(CCCCCCC\C=C/CCCCCCCC)(=O)O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 239000012260 resinous material Substances 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/02—Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen
- C07C69/22—Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen having three or more carbon atoms in the acid moiety
- C07C69/30—Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen having three or more carbon atoms in the acid moiety esterified with trihydroxylic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
- B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/02—Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen
- C07C69/22—Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen having three or more carbon atoms in the acid moiety
- C07C69/28—Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen having three or more carbon atoms in the acid moiety esterified with dihydroxylic compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11C—FATTY ACIDS FROM FATS, OILS OR WAXES; CANDLES; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS, OILS, OR FATTY ACIDS OBTAINED THEREFROM
- C11C1/00—Preparation of fatty acids from fats, fatty oils, or waxes; Refining the fatty acids
- C11C1/02—Preparation of fatty acids from fats, fatty oils, or waxes; Refining the fatty acids from fats or fatty oils
- C11C1/025—Preparation of fatty acids from fats, fatty oils, or waxes; Refining the fatty acids from fats or fatty oils by saponification and release of fatty acids
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11C—FATTY ACIDS FROM FATS, OILS OR WAXES; CANDLES; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS, OILS, OR FATTY ACIDS OBTAINED THEREFROM
- C11C1/00—Preparation of fatty acids from fats, fatty oils, or waxes; Refining the fatty acids
- C11C1/08—Refining
- C11C1/10—Refining by distillation
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11C—FATTY ACIDS FROM FATS, OILS OR WAXES; CANDLES; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS, OILS, OR FATTY ACIDS OBTAINED THEREFROM
- C11C1/00—Preparation of fatty acids from fats, fatty oils, or waxes; Refining the fatty acids
- C11C1/08—Refining
- C11C1/10—Refining by distillation
- C11C1/103—Refining by distillation after or with the addition of chemicals
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11C—FATTY ACIDS FROM FATS, OILS OR WAXES; CANDLES; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS, OILS, OR FATTY ACIDS OBTAINED THEREFROM
- C11C3/00—Fats, oils, or fatty acids by chemical modification of fats, oils, or fatty acids obtained therefrom
- C11C3/003—Fats, oils, or fatty acids by chemical modification of fats, oils, or fatty acids obtained therefrom by esterification of fatty acids with alcohols
Definitions
- the present invention is directed to a composition of matter. more particularly to a composition containing mixed esters of certain fatty acids.
- plasticizers for resinous and similar compositions for various uses, such as in molding and for film-forming purposes.
- plasticizer compositions was the stearic acid ester of triethylene glycol, which was incorporated in nitrocellulose.
- a plasticizer consisting of the diethylene glycol ester of a lower fatty acid such as acetic or propionic.
- compositions plasticized therewith tended to become brittle on ageing because of the gradual loss of plasticizer due to the appreciable vapor tension thereof. These compounds is relatively poor and compositions made therewith subject to contact with water or water vapor tend to deteriorate.
- the present invention is intended and adapted to overcome the difficulties inherent inplasticizers previously used and to provide a composition which is a substantially neutral mixed ester which may be incorporated in various resins and similar compounds to exert plasticizing effects.
- the present invention to provide a composition having plasticizlng properties which is substantially non-volatile, has no tendency to crystallize,,andwhich becomes a permanent part of the plasticized composition under all conditions of service.
- Such compounds have esters of fatty acids having 8 and 10 carbon atoms, namely, caprylic and capric acids.
- a mixture of such acids is esterifled with polyalkylene glycols such as diethylene, triethylene and propylene glycols.
- the esteriflcation is complete so asto form substantially neutral esters.
- the fatty acids incorporated in the composition may be natural fatty acids, synthetic acids and isomers thereof.
- a lower fatty acid such as caproic, having 6 carbon atoms, or a higher acid such as lauric acid,'having 12 carbon atoms, or both.
- a higher fatty acid such as lauric acid,'having 12 carbon atoms, or both.
- the esters of the present invention do not have the disadvantages of the esters of higher fatty acids in that they are compatible in practically all proportions with various base compositions. They do not have the disadvantages of the esters of lower fatty acids in that they are non-volatile, are permanent in the compositions and have better water-resistance. Because they consist of mixed esters, there is no tendency thereof to crystallizeand their solubility in various solvents, resins, and the like, is excellent.
- Example I The soap-obtained in the alkali refining of co- 'coa'nut oil is treated with sulphuric acid and split in the usual fashionwith Twitchell reagent. The free fatty acids formed in the reaction are separated and then fractionated by distillation to give a low boiling fraction having approximately the following composition:
- the resulting product has a saponification number of about 310 and the free fatty acids calculated as oleic being about .04.
- the odor is mild and pleasant.
- the product is approximately water-white, is quite stable and does not have a tendency to become rancid.
- Example 11 A mixture is made of 300 grams of'caprylic acid obtained by the fractional distillation of the mixed fatty acids of cocoanut oil and containing approximately 97% of caprylic acid with very minor amounts of other fatty acids of cocoanut oil, mostly capric acid, and 100 grams of diethylene glycol. The mixture is placed in a container, heat is applied, and a gentle stream of carbon dioxide is passed through the same. The temperature is gradually raised over a period of three hours up to about 270 0., 'at which point it is held for several hours while causing a stream of carbon dioxide to pass through the same, in order to distill of! any excess of fatty v repeated if necessary until the color is discharged.
- the refined product which is a pale limpid oil, is substantially insoluble in water, but is miscible with practically all the usual lacquer solvents and diluents in all proportions.
- One part of the refined product is mixed with three parts of low viscosity nitrocellulose and is thoroughly incorporated in the same by conducting the mixing on hot rolls.
- Example I II There is provided 125 grams of a mixture of diethylene glycol and triethylene glycol in equal proportions. To this is added 300 grams of a fraction of distilled'cocoanut oil fatty acids, composed principally of about 85% caprylic acid and small amounts'of adjacent acids, namely capric and lauric acids, and having an acid number of about 383. The mixture is heated in the presence of a gentle stream of carbon dioxide for over three hours, the temperature being gradually increased until about 2'70 'to 275 C. is
- a mixture is made of 40 parts by weight of this ester with 60 parts by, weight of low viscosity ethyl cellulose (6T5 sec). Theingredients are heated and compounded in a suitable mill until the mixture is uniform.
- caprylic acid and the remainder capric acid A reaction is caused to take place following the procedure set forth in Example II. 3 parts by weight of the mixed ester is incorporated in 7 parts by weight of a polyvinyl resin.
- the resin used is of the aldehyde modified polyvinyl acetate, and commonly termed vinyl acetal resin, wherein a condensation was caused to take place between polyvinyl alcohol and butraldehyde.
- the mixture is formed on hot rolls and is extruded into sheets for use.
- the mixed esters of the present invention are compatible with nitrocellulose both in solution and in the resulting films or molded productsin all proportions up to at least 3 parts of plasticizer to 2 parts of the nitrocellulose. There is no tendency for a separation of the plasticizer even when the composition is baked at 200 F.
- the compositions are ihert to atmospheric oxidizing conditions and are not decomposed or changed by light, although sunlight has a tendency to bleach the mixed esters. They have strong softening action and a low specific gravity.
- This material is particularly adapted for use in flexible coatings.
- it has the virtues of a true solvent plasticizer for nitrocellulose, compatibility, chemical inertness and neutrality, without the tackiness which sometimes results when large quantities of solvent plasticizer are used to get a flexible film.
- it exhibits the good qualities of the plasticizers of the vegetable oil type, giving flexible pliable films without tendency to tackiness, yet not having the bad odor, poor color, susceptibility to oxidation and sweating tendencies which many of'these oil plasticizers often have. 1
- the reaction may be conducted in any suitable manner as is well known.
- the proportions of the several acids in the mived esters may be varied within wide limits, it being essential that the caprylic acid be the major constituent and the capric acid be next in amount.
- the proportions of these two acids may vary from parts of caprylic to 3-35 parts ofcapric. acid.
- Other resins and plastics may be plasticized with' these compositions, as for instance the phenol formaldehyde, urea formaldehyde, alkyd, acrylate, and various other resinous materials.
- the proportions of the mixed esters which may be introduce into the compositions may vary widely.
- a composition of matter consisting of the substantially neutral mixed esters of a fully esterified polyalkylene glycol taken from the class consisting of ethylene and propylene glycols with a mixture of fatty acids consisting essentially of caprylic and capric acids, the relative proportions of caprylic to capric acid being 62-97% of caprylic to 32-3% of capric, the remainder of said acids being lauric and caproic in total amount not over 10%.
- composition of matter consisting of the substantially neutral mixed esters of a fully esterified polyalkylene glycol taken from the class consisting of ethylene and propylene glycols with a mixture of fatty acids consisting essentially of caprylic and capric acids, the relative proportions of caprylic to capric acid being 62-68% caprylic and 28-32% capric.
- a composition of matter consisting of the substantially neutral mixed esters of a fully esterified polyalkylene glycol taken from the class consisting of ethylene and propylene glycols with a mixture of fatty acids consisting essentially of capryl ic and capric acids, the relative proportions of caprylic to capric acid being 100 to about 15.
- composition of matter consisting of the substantially neutral mixed esters of a fully esterified polyalkylene glycol taken from the class consisting of ethylene and propylene glycols with a mixture of fatty acids consisting essentially of caprylic and capric acids, the relative proportions of caprylic to capric acid being about 2 to 1.
- composition of matter consisting of the substantially neutral mixed esters of a fully esterified polyalkylene glycol taken from the class consisting of ethylene and propylene glycols with a mixture of fatty acids in about the following proportions:
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Microbiology (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
ize at higher atmospheric temperatures.
Patented May 10, 1949 2,469,446 1 MIXED ns'rnns or FATTY ACID Frank A. Strauss, New Brighton, Staten Island, N. Y., minor to E. F. Drew 8; 00., Inc., New York, N. Y., a corporation of Delaware No Drawing. Application August 8, 1944, Serial No. 548,626
Claims. (Cl. 260-4105) 1 The present invention'is directed to a composition of matter. more particularly to a composition containing mixed esters of certain fatty acids.
The present application is a continuation-in-part of my copending application Serial No. 367,672, filed November 28, 1940, entitled Plastic compositions containing caprylic acid esters, Patent No. 2,372,522, dated March 27, 1945. Said copending application is, in turn, a continuation-inpart of abandoned application Serial No. 199,673, filed April 2, 1938, and entitled Esters of caprylic acid and compositions containing the same.
In the prior art, various esters have been used as plasticizers for resinous and similar compositions for various uses, such as in molding and for film-forming purposes. Among such plasticizer compositions was the stearic acid ester of triethylene glycol, which was incorporated in nitrocellulose. Such a product had the disadvantage that the solubility thereof in nitrocellulose was rather low and if any substantial quantity of the plasticizer was added to the nitrocellulose, there was a tendency for the plasticizer to separate out and produce a frosty, non-transparent appearance. Therefore, the plasticizing value of the material could not be utilized. It has also been proposed to provide a plasticizer consisting of the diethylene glycol ester of a lower fatty acid such as acetic or propionic. low melting points and have a tendency to vapor- As a result, compositions plasticized therewith tended to become brittle on ageing because of the gradual loss of plasticizer due to the appreciable vapor tension thereof. these compounds is relatively poor and compositions made therewith subject to contact with water or water vapor tend to deteriorate.
The present invention is intended and adapted to overcome the difficulties inherent inplasticizers previously used and to provide a composition which is a substantially neutral mixed ester which may be incorporated in various resins and similar compounds to exert plasticizing effects.
It is also among the objects of the present invention to provide a composition which is compatible in large amounts and over a wide range with substances plasticized therewith.
It is still further among the objects of, the present invention to provide a composition having plasticizlng properties which is substantially non-volatile, has no tendency to crystallize,,andwhich becomes a permanent part of the plasticized composition under all conditions of service.
In practicing the invention there are provided Also, the water resistance of 3 Such compounds have esters of fatty acids having 8 and 10 carbon atoms, namely, caprylic and capric acids. A mixture of such acids is esterifled with polyalkylene glycols such as diethylene, triethylene and propylene glycols. The esteriflcation is complete so asto form substantially neutral esters. The fatty acids incorporated in the composition may be natural fatty acids, synthetic acids and isomers thereof.
There-is usually present in the composition, in addition to the caprylic and capric acids, a lower fatty acid such as caproic, having 6 carbon atoms, or a higher acid such as lauric acid,'having 12 carbon atoms, or both. Although small amounts-of the latter two acids are usually present, the beneficial effect thereof in providing plasticizing compositions is substantial.
The esters of the present invention do not have the disadvantages of the esters of higher fatty acids in that they are compatible in practically all proportions with various base compositions. They do not have the disadvantages of the esters of lower fatty acids in that they are non-volatile, are permanent in the compositions and have better water-resistance. Because they consist of mixed esters, there is no tendency thereof to crystallizeand their solubility in various solvents, resins, and the like, is excellent.
The following are specific examples of a few of the many compositions which may be made in accordance with the present invention:
Example I I The soap-obtained in the alkali refining of co- 'coa'nut oil is treated with sulphuric acid and split in the usual fashionwith Twitchell reagent. The free fatty acids formed in the reaction are separated and then fractionated by distillation to give a low boiling fraction having approximately the following composition:
Per cent Caproic acid 2- 5 Capryli'c acid 62-68 Capric acid 28-32 Laurie acid 2- 5 so glycol in a suitable vessel. The mixture is heated for about two hours with a gradual rise in temperature from 145 C. to a maximum of 220 C. at the end of the operation. The reaction mixture is agitated vigorously during the heating and carbon dioxide is introduced into the vessel, which may be at atmospheric or higher pressure.- If desired, the esterification may be conducted in a partial vacuum. When the reaction is substantially complete, the mass is subjected to vacuum distillation to remove excess of fatty acid or of glycol or both. The crude mixed esters are refined by the usual treatment with alkali, washing, bleaching with fullers earth, and activated carbon, and deodorized in a vacuum at '70-125 C.
The resulting product has a saponification number of about 310 and the free fatty acids calculated as oleic being about .04. The odoris mild and pleasant. The product is approximately water-white, is quite stable and does not have a tendency to become rancid.
Example 11 A mixture is made of 300 grams of'caprylic acid obtained by the fractional distillation of the mixed fatty acids of cocoanut oil and containing approximately 97% of caprylic acid with very minor amounts of other fatty acids of cocoanut oil, mostly capric acid, and 100 grams of diethylene glycol. The mixture is placed in a container, heat is applied, and a gentle stream of carbon dioxide is passed through the same. The temperature is gradually raised over a period of three hours up to about 270 0., 'at which point it is held for several hours while causing a stream of carbon dioxide to pass through the same, in order to distill of! any excess of fatty v repeated if necessary until the color is discharged.
The refined product, which is a pale limpid oil, is substantially insoluble in water, but is miscible with practically all the usual lacquer solvents and diluents in all proportions. One part of the refined product is mixed with three parts of low viscosity nitrocellulose and is thoroughly incorporated in the same by conducting the mixing on hot rolls.
Example I II There is provided 125 grams of a mixture of diethylene glycol and triethylene glycol in equal proportions. To this is added 300 grams of a fraction of distilled'cocoanut oil fatty acids, composed principally of about 85% caprylic acid and small amounts'of adjacent acids, namely capric and lauric acids, and having an acid number of about 383. The mixture is heated in the presence of a gentle stream of carbon dioxide for over three hours, the temperature being gradually increased until about 2'70 'to 275 C. is
reached, at which temperature the mixture is held for about one hour while passing a current of carbon dioxide through the same. The mixture is purified as stated above, and the properties of the product are quite similar to the product of Example I.
A mixture is made of 40 parts by weight of this ester with 60 parts by, weight of low viscosity ethyl cellulose (6T5 sec). Theingredients are heated and compounded in a suitable mill until the mixture is uniform.
about of caprylic acid and the remainder capric acid. A reaction is caused to take place following the procedure set forth in Example II. 3 parts by weight of the mixed ester is incorporated in 7 parts by weight of a polyvinyl resin. Specifically, the resin used is of the aldehyde modified polyvinyl acetate, and commonly termed vinyl acetal resin, wherein a condensation was caused to take place between polyvinyl alcohol and butraldehyde. The mixture is formed on hot rolls and is extruded into sheets for use.
The mixed esters of the present invention are compatible with nitrocellulose both in solution and in the resulting films or molded productsin all proportions up to at least 3 parts of plasticizer to 2 parts of the nitrocellulose. There is no tendency for a separation of the plasticizer even when the composition is baked at 200 F. The compositions are ihert to atmospheric oxidizing conditions and are not decomposed or changed by light, although sunlight has a tendency to bleach the mixed esters. They have strong softening action and a low specific gravity.
This material is particularly adapted for use in flexible coatings. For these'purposes it has the virtues of a true solvent plasticizer for nitrocellulose, compatibility, chemical inertness and neutrality, without the tackiness which sometimes results when large quantities of solvent plasticizer are used to get a flexible film. At the same time, it exhibits the good qualities of the plasticizers of the vegetable oil type, giving flexible pliable films without tendency to tackiness, yet not having the bad odor, poor color, susceptibility to oxidation and sweating tendencies which many of'these oil plasticizers often have. 1
Although I have described my invention setting forth several specific embodiments thereof,
' it will be appar nt that various changes in the detailsmay be ple and polymerized, and various higher glycols than propylene glycol may be used. The reaction may be conducted in any suitable manner as is well known. The proportions of the several acids in the mived esters may be varied within wide limits, it being essential that the caprylic acid be the major constituent and the capric acid be next in amount. The proportions of these two acids may vary from parts of caprylic to 3-35 parts ofcapric. acid. Other resins and plastics may be plasticized with' these compositions, as for instance the phenol formaldehyde, urea formaldehyde, alkyd, acrylate, and various other resinous materials. The proportions of the mixed esters which may be introduce into the compositions may vary widely.
These and other changes in the details of the invention may be made within the spirit thereof and the scope of the invention is not to be limited except by the character of the claims appended hereto.
What I claim is:
l. A composition of matter consisting of the substantially neutral mixed esters of a fully esterified polyalkylene glycol taken from the class consisting of ethylene and propylene glycols with a mixture of fatty acids consisting essentially of caprylic and capric acids, the relative proportions of caprylic to capric acid being 62-97% of caprylic to 32-3% of capric, the remainder of said acids being lauric and caproic in total amount not over 10%.
2. A composition of matter consisting of the substantially neutral mixed esters of a fully esterified polyalkylene glycol taken from the class consisting of ethylene and propylene glycols with a mixture of fatty acids consisting essentially of caprylic and capric acids, the relative proportions of caprylic to capric acid being 62-68% caprylic and 28-32% capric.
3. A composition of matter consisting of the substantially neutral mixed esters of a fully esterified polyalkylene glycol taken from the class consisting of ethylene and propylene glycols with a mixture of fatty acids consisting essentially of capryl ic and capric acids, the relative proportions of caprylic to capric acid being 100 to about 15.
4. A composition of matter consisting of the substantially neutral mixed esters of a fully esterified polyalkylene glycol taken from the class consisting of ethylene and propylene glycols with a mixture of fatty acids consisting essentially of caprylic and capric acids, the relative proportions of caprylic to capric acid being about 2 to 1.
5. A composition of matter consisting of the substantially neutral mixed esters of a fully esterified polyalkylene glycol taken from the class consisting of ethylene and propylene glycols with a mixture of fatty acids in about the following proportions:
Percent Caproic acid 2-5 Caprylic acid 62-68 Capric acid 28-32 Laurie acid 2-5 FRANK A. STRAUSS.
REFERENCES CITED The following references are of record in the file of this patent:
Priority Applications (1)
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US548626A US2469446A (en) | 1944-08-08 | 1944-08-08 | Mixed esters of fatty acids |
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Application Number | Priority Date | Filing Date | Title |
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US548626A US2469446A (en) | 1944-08-08 | 1944-08-08 | Mixed esters of fatty acids |
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US2469446A true US2469446A (en) | 1949-05-10 |
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US548626A Expired - Lifetime US2469446A (en) | 1944-08-08 | 1944-08-08 | Mixed esters of fatty acids |
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Cited By (11)
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US2600275A (en) * | 1949-10-31 | 1952-06-10 | Curtis W Smith | Substituted pentanediols and derivatives thereof |
US2666706A (en) * | 1949-11-16 | 1954-01-19 | Drew & Co Inc E F | Polyethylene glycol esters in fat |
US2871248A (en) * | 1955-10-31 | 1959-01-27 | American Oil Co | Glycol diesters |
US3036957A (en) * | 1957-11-05 | 1962-05-29 | Campbell Pharmaceuticals Inc | Water soluble composition of lipoid soluble vitamins |
JPS5088139A (en) * | 1973-10-19 | 1975-07-15 | ||
US3957712A (en) * | 1973-08-27 | 1976-05-18 | Henkel & Cie G.M.B.H. | Use of a hydrophilic plasticizer for plastic dispersions and pastes |
EP2308822A2 (en) | 2009-10-08 | 2011-04-13 | OXEA GmbH | Method for brightening the colour of polyol esters |
EP2308823A2 (en) | 2009-10-08 | 2011-04-13 | OXEA GmbH | Method for manufacturing polyol esters |
EP2308824A2 (en) | 2009-10-08 | 2011-04-13 | OXEA GmbH | Method for manufacturing polyol esters |
EP2308821A2 (en) | 2009-10-08 | 2011-04-13 | OXEA GmbH | Method for brightening the colour of polyol esters |
WO2012142494A1 (en) * | 2011-04-13 | 2012-10-18 | Sartec Corporation | Systems and methods for producing surfactants and surfactant intermediates |
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US2600275A (en) * | 1949-10-31 | 1952-06-10 | Curtis W Smith | Substituted pentanediols and derivatives thereof |
US2666706A (en) * | 1949-11-16 | 1954-01-19 | Drew & Co Inc E F | Polyethylene glycol esters in fat |
US2871248A (en) * | 1955-10-31 | 1959-01-27 | American Oil Co | Glycol diesters |
US3036957A (en) * | 1957-11-05 | 1962-05-29 | Campbell Pharmaceuticals Inc | Water soluble composition of lipoid soluble vitamins |
US3957712A (en) * | 1973-08-27 | 1976-05-18 | Henkel & Cie G.M.B.H. | Use of a hydrophilic plasticizer for plastic dispersions and pastes |
JPS5088139A (en) * | 1973-10-19 | 1975-07-15 | ||
JPS5542106B2 (en) * | 1973-10-19 | 1980-10-28 | ||
US20110087045A1 (en) * | 2009-10-08 | 2011-04-14 | Michael Adamzik | Process for preparing polyol esters |
DE102009048772A1 (en) | 2009-10-08 | 2011-04-21 | Oxea Deutschland Gmbh | Process for the preparation of polyol esters |
EP2308824A2 (en) | 2009-10-08 | 2011-04-13 | OXEA GmbH | Method for manufacturing polyol esters |
EP2308821A2 (en) | 2009-10-08 | 2011-04-13 | OXEA GmbH | Method for brightening the colour of polyol esters |
US20110087044A1 (en) * | 2009-10-08 | 2011-04-14 | Tonia Weber | Process for preparing polyol esters |
EP2308822A2 (en) | 2009-10-08 | 2011-04-13 | OXEA GmbH | Method for brightening the colour of polyol esters |
US20110087046A1 (en) * | 2009-10-08 | 2011-04-14 | Guido Frey | Process for lightening the color of polyol esters |
US20110086997A1 (en) * | 2009-10-08 | 2011-04-14 | Guido Frey | Process for lightening the color of polyol esters |
DE102009048773A1 (en) | 2009-10-08 | 2011-04-21 | Oxea Deutschland Gmbh | Process for the color lightening of polyol esters |
EP2308823A2 (en) | 2009-10-08 | 2011-04-13 | OXEA GmbH | Method for manufacturing polyol esters |
DE102009048771A1 (en) | 2009-10-08 | 2011-04-21 | Oxea Deutschland Gmbh | Process for the preparation of polyol esters |
DE102009048774A1 (en) | 2009-10-08 | 2011-04-28 | Oxea Deutschland Gmbh | Process for the color lightening of polyol esters |
US8158816B2 (en) | 2009-10-08 | 2012-04-17 | Oxea Gmbh | Process for lightening the color of polyol esters |
EP2308823B1 (en) * | 2009-10-08 | 2015-06-03 | OXEA GmbH | Method for manufacturing polyol esters |
US8399697B2 (en) | 2009-10-08 | 2013-03-19 | Oxea Gmbh | Process for preparing polyol esters |
US8524937B2 (en) | 2009-10-08 | 2013-09-03 | Oxea Gmbh | Process for preparing polyol esters |
US8524938B2 (en) | 2009-10-08 | 2013-09-03 | Oxea Gmbh | Process for lightening the color of polyol esters |
WO2012142494A1 (en) * | 2011-04-13 | 2012-10-18 | Sartec Corporation | Systems and methods for producing surfactants and surfactant intermediates |
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