Every polyolefin stabiliser quotation eventually comes down to a comparison between four names: HALS 944 (CAS 70624-18-9), HALS 622, UV-770 and UV-783. They are all hindered amine light stabilizers, they all work by the same radical-trapping cycle, and they are priced differently. Choosing between them on price per kilogram is how formulations end up failing

An agricultural film is the most hostile environment a polyolefin stabiliser package will ever face. A greenhouse cover is 100-200 microns thick, sits in full sun for three to five years, and is simultaneously attacked by sulphur-based fungicides, chlorine disinfectants, acidic pesticide actives and condensation. Nowhere else does the difference between a cheap stabiliser and

Polyolefins fail in sunlight for one reason: ultraviolet radiation initiates a radical chain reaction that cannot stop itself. Hindered amine light stabilizers interrupt that chain, and among them Light Stabilizer 944 (CAS 70624-18-9) has held a leading position for four decades in the applications where permanence matters most – polypropylene fibres, polyethylene agricultural film, pipe,

Three names dominate halogen-free flame retardancy in polyolefins: ammonium polyphosphate (APP), dipentaerythritol (DPE) and pentaerythritol phosphate (PEPA, CAS 5301-78-0). They are usually presented as alternatives, but they are not the same kind of additive, and picking between them on price per kilogram is the most common formulation mistake in intumescent work. This guide gives a

Intumescent fire-retardant coatings protect steel, timber and cable trays by converting themselves into an insulating char when heated. The chemistry behind that conversion is a three-source system, and the carbon source is where most coatings fail in service – not because it cannot char, but because it leaches, blooms or hydrolyses before the fire ever