Paints and Coatings Chemicals

Phthalic anhydride is the organic compound with the formula C₆H₄(CO)₂O. It is the anhydride of phthalic acid. Phthalic anhydride is a principal commercial form of phthalic acid. It was the first anhydride of a dicarboxylic acid to be used commercially. This colourless solid is an important industrial chemical, especially for the large-scale production of plasticizers for plastics. In 2000, the worldwide production volume was estimated to be about 3 million tonnes per year.

Hydroxypropyl Methyl Cellulose (HPMC) is non-ionic cellulose ether made from natural high polymer cellulose by series of chemical processing. It is odorless, tasteless and non-toxic white powder, which could be dissolved in cold water to form transparent and thick solution. It possess thickening, binding, dispersing, emulsifing, film forming, suspending, absorbing, gelling, surface activity, water maintaining and protective colloid properties. Hydroxypropyl Methyl cellulose has a wide usage. The products from our company are mainly used in building material, coating industry, ceramics, agriculture, daily chemical and other industries.
Appearance
White powder
Particle Size (mesh)
80-100
Methoxy (%)
19.0-24.0
Hydroxypropyl (%)
4.0-12.0
Gel Temp. (¿¿¿)
70-90
PH Value
5-8
Ash Content (%)
≤4
Viscosity (mpa.s)
≥100,000
APPLICATION PERFORMANCE:
(1)Water Solubility Soluble water in any proportion,the highest density depends on viscosity,and solution does not be effected by PH value.
(2) Solubility in Organic solvent HPMC can dissolve in some organic solvents or organic aqueous solutions such as ethylidene chloride,alcohol ones.
(3) Heat Gelling When their aqueous solutions are heated to a certain temperature, reversible reaction may occur,but its fast gelling can be controlled.
(4)Non-ion Electric Charge HPMC is non-ion cellulose ether,does not complex with metal ions or result in insoluble precipitations.
(5) Thickening Its water solution provides thickening effect whoich has to do with viscosity,density and system.
(6) Water-holding HPMC or its solution can absorb and hold moisture.
(7) Film-forming HPMC can be made into smooth,tough and elastic film which offers excellent oil resistance and antioxidancy.

2-Methyl-1,3-Propanediol, clear liquid, is a non-symmetric aliphatic diol (two primary hydroxyl groups) with a methyl branch. It is an isomer of 1,3 Butylene Glycol. It has low viscosity and is miscible in water and alcohols. It remains in liquid even in cold temperatures due to its non-symmetrical molecular structure. It is used in the production of polyesters, polyurethane coatings, adhesives, sealants or elastomers required to keep transparency, weatherability and long stability. It is also used as an emulsifier and a humectant for the end applications of personal care products