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Dongying Rich Chemical Co.,Ltd

Extraction and Use of Propylene Glycol

Propylene glycol is an important raw material of unsaturated polyester, epoxy resin, polyurethane resin. Propylene glycol extraction process, belonging to the technical field of chemical separation. The process is the use of inorganic acid salt is easy to crystallize, and propylene glycol fermentation broth in the organic acid salt is not easy to crystallize the characteristics of propylene glycol fermentation broth by adding the right amount of inorganic acid, the fermentation solution of organic acid salt into organic acid.

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The concentrated fermentation broth is converted into propylene glycol, succinic acid, lactic acid, acetic acid, glycerol and 2,3-butanediol, and the fermentation broth is concentrated to produce the corresponding inorganic acid salt; Alcohol, and the mixture was vacuum distilled to obtain the product of each component. The advantage is that while the propylene glycol and 2,3-butanediol are obtained, the salt in the fermentation broth is removed and the products of succinic acid, lactic acid and acetic acid and inorganic acid salts are obtained, which reduces the waste discharge and increases The overall benefits of production.

Product Usage

1. Used as resin, plasticizer, surfactant, emulsifier and demulsifier raw materials, can also be used as antifreeze and heat carrier.

2. Used as gas chromatographic fixation, solvent, antifreeze, plasticizer and dehydrating agent.

Antioxidant; tissue improver; surfactant; stabilizer; thickener; dough conditioner; emulsifier; flavoring agent; excipient; processing aid; curing agent; The GB 2760 ~ 96 as a food processing aids.

Mainly used for a variety of spices, pigments, preservatives solvent, vanilla beans, roasted coffee tablets, natural spices and other extraction solvent. Candy, bread, packaging, meat, cheese and other moisturizing, softener. That can also be used as noodles, filling the core of the mold additives. Add 0.006% in the soymilk, so that the same flavor when heated, made of white and shiny packaging tofu, fried volume is swollen.

4. Propylene glycol is the intermediate of the fungicide phenylethylenediazole.

5. As a solvent, preservatives, pigments, antioxidants and other difficult to dissolve in water food additives dissolved in it, then add food; have a strong hygroscopicity, the food has moisturizing and antifreeze effect. China can be used for cakes, the maximum use of 3.0g / kg.

6. Propylene glycol is an important raw material of unsaturated polyester, epoxy resin and polyurethane resin. This amount is about 45% of the total consumption of propylene glycol. This kind of unsaturated polyester is used for surface coating and reinforced plastic. Propylene glycol has good tackiness and hygroscopicity and is non-toxic and is widely used as a hygroscopic agent, antifreeze, lubricant and solvent in the food, pharmaceutical and cosmetic industries. In the food industry, propylene glycol and fatty acids react to produce propylene glycol fatty acid esters, mainly used as food emulsifiers; propylene glycol is a good solvent for condiments and pigments. Propylene glycol in the pharmaceutical industry commonly used in the manufacture of various types of ointment, ointment solvents, softeners and excipients, etc., because propylene glycol and various spices have good miscibility, and therefore also used as cosmetics, solvents and softeners and so on. Propylene glycol is also used as a solvent for tobacco moisturizers, fungicides, food processing equipment lubricants and food labeling inks. The aqueous solution of propylene glycol is an effective antifreeze.

7. As a drug carrier, granule drug agent. Can be used as cosmetics moisturizers, softeners, solvents and so on. Tobacco industry can be used as tobacco flavor, tobacco moisturizers, preservatives and so on. Food industry as a flavor, food color of the solvent, food packaging softener, food anti-adhesive, and so on.That  can also be used to produce unsaturated polyester resin, plastic plasticizer, dehydrating agent, surfactant, curing agent, binder and other raw materials. Can also be used for paints, pesticides, coatings and other industries.


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