HPL Additives - Polymer Additives, Specialty Chemicals and Industrial Chemicals

HPL Additives, the flagship company of the HPL group, is a leading manufacturer of polymer additives, speciality chemicals and industrial chemicals. HPL Additives has established a formidable reputation in both the domestic and international markets as a producer of world-class chemicals. Its range of products includes property extenders, polymer additives, modifiers, polymerisation catalysts, speciality chemicals for water treatment, pharmaceutical intermediates and industrial chemicals.

Established in 1964, the company has emerged as the single largest player with over 75% share of the Indian market for most of its products. Its products have also been widely accepted in the West. The company has diversified into biocides, polymerisation catalysts, photographic chemicals, pharmaceutical and agro chemicals intermediates.

POLYMER ADDITIVES

Antioxidants are used to retard the reaction of organic material with atmospheric oxygen, which can cause degradation. These chemicals are responsible for retarding oxidation during manufacturing, processing, storage, as well as the end product. The range of Kinox-Phenolics & Phosphites belong to primary and secondary antioxidants. These Phenolic antioxidants are responsible for imparting long-term thermal and processing stability to the end application.

UV light stabilisers prevent photo degradation processes in polymers, such as colour changes, chalking, cracking and loss of mechanical properties such as tensile strength, impact strength, etc. The range of Hilite-HALS (Hindered Amine Light Stabilisers), Benzophenones and Benzotriazoles belong to this class of UV light stabilisers. While Hindered Amine light Stabilisers work best for the thin section applications, UV absorbers work best for the thick section applications.

Chain extenders are cross-linking agents for biodegradable polymeric films used in drug delivery systems. This is also used as a stabiliser for synthetic fibres. The range of Hichem-ADH belongs to this category.

Optical brighteners are used widely to improve the colour of various plastics. They are often used in combination with other dyes or with pigments to bring about specific shades. These alter the visual properties of polymers and are also known as fluorescent whitening agents. These mask inherent yellowness in discoloured polymers and impart unique, robust colour to speciality plastic products.

MODIFIERS

Chemical blowing agents are used for production of unicellular products. Tailor-made products are provided for customer-specific needs and operating conditions when required decomposition mechanism in the end application. Particle size is crucial for these products.

The Mikrofine range for CBA’s have a whole range of products for different applications. The range is designed to provide lowest possible relative density, reduced surface yellowing and smooth surface. Modifiers include Azobisnitriles, Azodicarbonamide, Dinitrosopentamethylenetetramine, Sulfonyl Hydrazides and Sulfonyl Semicarbazides.

POLYMERISATION CATALYSTS

Polyazo initiators are known sources of free radicals and are used in the polymerisation of common monomers like vinyl chloride, styrene, vinyl acetate, ethylene and methyl methacrylate. These Polyazo initiators can be classified into two groups – organic solvent soluble Azo initiators and water soluble Azo initiators. The Polyazo initiators include products such as Polyazo AZDN, Polyazo AZDV, Polyazo AZMB and Polyazo AZCC. The function of these products relies upon decomposition to generate free radicals in a wide range of solvents at almost first order rates.

SPECIALITY CHEMICALS

Biocides are used for industrial water treatment and effluent management system, for cooling towers, evaporative condensers, pulp and paper mill effluents and oil recovery systems. Biocides are also used for disinfecting swimming pool and special applications.

INDUSTRIAL CHEMICALS

The company manufactures Hydrazine Hydrate, which is used in pharmaceuticals and agricultural chemicals intermediates and also in the production of chemical blowing agents. Hydrazine Hydrate is also being used in the manufacture of polymerization catalysts, food additives, soldering fluxes, surfactants, detergents and plasticizer.