BENZYL ALCOHOL IN EPOXY FORMULATION

In the case of epoxy coatings, the VOC requirement for floor coatings calls for less than or equal to 100 g/L in order to obtain the credits for LEED ( Leadership in Energy & Environmental Design, another factor of increasing importance concerning VOC regulations is the Green Building   ) classification. The challenge comes from the fact that most, if not all, of the so-called solvent-free epoxy coatings quite often have a nonreactive plasticizer in their composition. These plasticizers give the final coating the flexibility necessary to meet industry requirements. The most common nonreactive plasticizer used is BENZYL ALCOHOL (BzOH). This normally results in a standard VOC content in excess of 250 g/L, if the BzOH is classed as a volatile compound. Additionally, as BzOH is classed as a fugitive plasticizer (one that volatizes during the drying process) the coating can lose its flexibility over the service life as the BzOH leaches out of the coating.

Benzyl alcohol is added to coating formulations in order to ensure good processing viscosity at low temperatures (about 15° C.). benzyl alcohol as a solvent are its low volatility and low toxicity. The product is used as a coalescing agent or as a co-solvent. It has a good performance in dissolving hydrophobic amines in water- based systems and also acts as a viscosity-reducing agent in some coating systems.

Benzyl alcohol is a versatile co-solvent used in a wide range of curing agent formulations for epoxy resins used in coatings, flooring systems, adhesives, etc. The product can also be used as a co-catalyst and plasticizer and to keep the temperature low during the curing process.

In paint strippers benzyl alcohol is used as an environmentally friendly substitute for methylene chloride. Major applications are in industrial paint stripping (in particular in formulations used for aircraft) and in architectural, professional and do-it-yourself paint stripping.

In the pharmaceutical industry benzyl alcohol is used as a preservative, in emulsions and ointments and in insect-bite lotions.

Benzyl alcohol  is used as a raw material in the manufacture of its various esters, which are used in the soap, perfume and flavor industries and as an intermediate in the synthesis of polypeptides. Examples of these esters are benzyl acetate and benzyl benzoate. Benzyl acetate is used in flavors for its pear-like taste, as a jasmine perfume ingredient and as a fixative for artificial musks. Benzyl benzoate finds application in pharmaceuticals, as a fixative in perfumes, as a flavoring in confectioneries and chewing gums, and as a softener in lacquers.

 Based on the high purity and stable odor profile our benzyl alcohol is also used for fragrance applications. Other applications of benzyl alcohol include coatings, lacquers, photo developer systems, metal cleaning formulations, cosmetics and hair care applications.

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For any further info please feel free to contact me, 02130338599, WA 087737835317, michael@sanminglobe.com

Rgds,

Michael

DMSO application used as a organic solvent

DMSO application used as a organic solvent

Dimethyl Sulfoxide ( DMSO ) is a highly safe aprotic polar solvent that dissolves most organis and inorganic compounds. Dimethyll Sulfide ( DMS), an intermediate raw material of DMSO, is a unique product  used in a variety of other fields.


Applications :

Removers and Cleaners

Thanks to both high dissolution properties and permeability, DMSO has extensive application as a remover and cleaner in a number of areas.

・Electronic component cleaners
・Removers
・Plant cleaning agents
・Mold release solvents for motor parts molding

Other applications

Thanks to its outstanding dissolution properties and low toxicity, use of DMSO is not limited solely to the chemical industry.
・Polymerized yarn solvents
・Extracting solvents
・Dye and Pigment dissolving solvents

DMSO apps. for 

Agricultural Chemicals

There are two important applications for DMSO in the agrochemical sciences. DMSO is used as a reaction solvent to synthesize agricultural chemicals and as a solvent for the formulation of agrochemical actives.

Formulation: The powerful solvent properties of DMSO allow for high actives loading, resulting in highly concentrated formulations. DMSO is completed miscible in water and is naturally biodegradable.

DMSO is a useful liquid formulation solvent for Imidacloprid, a neonicotinoid insecticide. Imidiacloprid is thought to be the most widely used insecticide in the world (Yamamoto, Izuru (1999).

An important benefit offered by DMSO in agricultural chemical formulations is the ability to dissolve highly insoluble active ingredients. It provides an alternative to more hazardous dipolar aprotic solvents which are being regulated out of agrichemical applications – particularly N-Methyl Pyrollidone (NMP). To learn more about how DMSO is being used to replace NMP.

Examples of agrichemical ingredients which have good DMSO solubility are the imidazolinone herbicides imazethapyr and Imazamethabenz-methyl.

For any further info please contact Michael