Blown oil

Viscosity of drying oils also can be increased by passing air through the oil at relatively moderate temperatures, 140 to 150°C, to produce blown oils. Presumably, reactions similar to those involved in cross-linking cause autoxidative oligomeri2ation of the oil. 

Blown oils differ from stand oils in that they are partially oxidised in addition to being polymerised. The oxidation is achieved by blowing air through the heated oil. This treatment results in a product having poor drying properties, and blown oils are therefore effective plasticisers and are used as such in nitrocellulose finishes. 

A colour mixture containing the 3 components ignited spontaneously. Oxidation products in the air-blown oil may have reacted exothermally with the complex cyanide, a reducant. 

The blown oils have been used in the coatings industry for decades, and are principally used in the preparation of drying oils for protective coatings. The process of... 

In recent years, blown oils have found their way into the polyurethane industry. The additional hydroxyl content introduced through the oxidation process makes the oils more reactive toward isocyanates [82]. The oils can usually be incorporated at low levels into conventional formulations with little compromise to the mechanical properties of the finished polyurethanes. Blown oils have since found utility in carpet backing, insulation foams, and other polyurethane products [83]. At least a... 

The resulting polyol resembles the product that is hypothesized for the oligomerization of triglycerides via air oxidation, with the exception that there is a large increase in the hydroxyl content of the polyol product, and there is very little, if any, of the starting epoxide left unreacted. In addition, the epoxidation process does not produce low molecular weight chain scission products, which are a by-product of the blown oil process. The hydroxylation of epoxidized triglycerides is illustrated in Fig. 17. 

The preparative method used for the polyol allowed a reduction in the competitive oligomerization of the polyol, resulting in a relatively lower amount of oligomeric polyol, seen when the GPC analysis is compared to that of the blown oil polyol (Fig. 10). An idealized structure of the polyol, along with a GPC analysis is represented in Fig. 23. 

Kanite. A US AN expl containing a substance akin to oxidized (blown) oil Ref W.H. Blumenstein, Interstate Com Commission Opinion No 1557 (1 June 1911) ... 

Castor Oil, Oxidized, Heating of castor oils in intimate contact with air or oxygen at temps of 80 to 130°, with or wo a catalyst, produce oils of high viscosity and higher d, than untreated castor oils. The oxidized oils, known also as "blown oils are used as plasticizers in lacquers, artificial leathers, oil cloths and similar products (Ref 5,p 241). It was claimed by Nakamura (AddnlRef d) that a small quantity of peroxide was formed when castor oil was treated with air at ca 155°. Mondain-Monval Marteau(Addnl Ref e) claimed that direct oxidation of castor oil (as well as of some other vegetable oils) by air in a heated glass tube also produced peroxides Refs l)Daniel(1902), 472 2)Thorpe 2(1938), 420-22 3)CondChemDict(1942), 288(Cheddites) 4)Davis( 1943), 258, 269, 358-60 365 5)Kirk Othmer 3(1949), 237-44 6)Izzo, Pirotecnia(1950), 226-7 239 7)Kirk Othmer 11(1953), 323 8) Sax(1957), 444(Toxicity fire hazard of castor oil) 9)CondChemDict(1961), 229 10)US... 

Blowing warm air through heated soybean oil found to increase viscosity by initiating oxidation and polymerization blown oil improves properties of printing inks. 

Use Solvent for nitrocellulose, cellulose ether, bitumens, metallic soaps, basic dyes, blown oils, crude rubber, many natural and synthetic resins and gums, lacquers. 

Use Solvent for nitrocellulose, raw and blown oils, resins, and polymers lacquers flavoring. 

Use Edible oil for salad dressings, margarine, etc. lubricant additive substitute for soybean oil soft soaps blown oils. 

Soy Oil Systems successfully developed new polyols based on soybean oil oxidation (oxygen blown oils). Many other companies and research centres are involved in serious research on the valorification of natural renewable resources by transforming them into polyols and into PU. Very important research on unsaturated vegetable oil, chemical transformation into polyols for PU were developed in Pittsburg State University, Kansas (under Professor Zoran Petrovic), Henkel and Cognis (Sovermol polyols), Unichema (dimer acids and dimer diols etc.), Bayer, Cargill and other companies. 

Peacock. [Geo. Pfau s Sons] Animal oils, lard oils, mink oils, neatsfoot oils, tallows, tallow oils, stearine, blown oils, fatty acids, oleo stearine. 

USE Lubricant manuf rubber substitutes, margarine, soft soaps, blown oils oiling woolens. 

Cyclohexanone [108-94-1] (Hexanone) is insoluble in water, miscible with organic solvents. It is a high boiler with very good solvency for cellulose nitrate, cellulose ethers and esters, colophony, shellac, alkyd resins, natural and synthetic resins, chlorinated rubber, rubber, vinyl polymers and copolymers, polystyrene, ketone and ketone-formaldehyde resins, fats, oils, waxes, blown oils, and bitumen. [14.268],... 

Cyclohexyl acetate [622-45-7] is very slightly miscible with water, but completely miscible with common organic solvents. Its solvency properties are comparable to those of amyl acetate. Cyclohexyl acetate dissolves oils, fats, resins, waxes, cellulose nitrate, cellulose tripropionate and acetobutyrate, alkyd resins, unsaturated and saturated polyester resins, phenolic resins and aminoplasts, poIy(vinyI chloride), vinyl chloride copolymers, poly(vinyl acetate), poly(vinyl ethers), epoxy resins, and acrylic resins, basic dyes, blown oils, crude rubber, metallic soaps, shellac, and bitumen. 

Di-n-propyl ketone is a colorless, stoble liquid hoving a pleosont odor. It is miscible with mony orgonic solver ts, and dissolves o wide voriety of moteriols, some of which ore crude rubber, nitrocellulose, row and blown oils, many natural ond synthetic resins like dewaxed dammar, manila, rosin, ester gum, and waxes. 

Toxicology ACGIH TLV/TWA 50 ppm in air LD50 (oral, rat) 3730 mg/kg, (skin, rabbit) 5660 mg/kg LCLo (inh., rat, 4 h) 4000 ppm mod. toxic by ing., inh., and skin contact skin and eye irritant TSCA listed Precaution Flamm. mod. fire risk can react with oxidizing materials Hazardous Decomp. Prods. Heated to decomp., emits acrid smoke and fumes Uses Solvent for nitrocellulose, raw and blown oils, resins, and polymers lacquers synthetic flavoring agent in foods and pharmaceuticals pharmaceutical raw material cosmetics ingred. 

Diisobutyl phthalate 3-Methoxybutanol solvent, PVC Diisobutyl phthalate solvent, quick-dry varnishes Ethoxydiglycol solvent, raw/blown oils 4-Heptanone solvent, rayon Diacetone alcohol solvent, reaction... 

In addition to the above, there are other industrially modified or pretreated vegetable oils. These are blown oil, boiled oil and stand oU. Blown oils are made by blowing air through the oU at a temperature between 95 and 120°C, depending on the iodine value of the oil. As the durability of films of such oils is poor, they are mainly used in oiled fabrics, lithographic varnishes, pigment grinding aids, and so on. Boiled oils are not actually boiled, rather they are dried (cross-linked) by an oxidative polymerisation process in the presence of an appropriate type and dose of drier at a specified temperature for 8-16 hours. They are mainly used in oil paints, enamels and oil-based primers. Stand oils are the heat bodied or polymerised oils... 

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