WebThe second component is a polyisocyanate, known as a ‘hardener’; a substance containing two or more isocyanate groups. Polyisocyanates used for the preparation of polyurethane coatings derive mainly from two basic isocyanates: an aromatic isocyanate, tolylene diisocyanate (TDI) and an aliphatic diisocyanate, hexamethylene diisocyanate (HDI). WebHDI biuret. BASONAT HB series offers superior weather and chemical resistance with excellent gloss retention adn light stability. These products are compatible with a wide …
Chemical structures of the four isocyanates (HDI, uretdione, biuret ...
WebDesmodur® by Covestro are polyisocyanates and polyols for the production of high-quality polyurethane-based products. This range offers tremendous formulation freedom for solvent-borne and high-solids polyurethane (PU) coatings. They are also used as coatings to protect everyday products such as cars, trucks and buses, appliances and electronics, wood … WebAug 5, 2024 · Tolonate™ HDB 75 MX by Vencorex is an aliphatic polyisocyanate biuret (HDI homo-polymer). Shows good compatibility with polyesters, excellent abrasion-, … tsl east greenbush ny
Tolonate™ HDB 75 MX by Vencorex: Technical Datasheet
WebDec 1, 2024 · Fluorinated alcohols were built into biuret or allophanate polyisocyanate crosslinkers. The SFE of obtained coatings was reduced from 46.2 mJ/m 2 for unmodified coatings only to 38,5 mJ/m 2 for coatings contained fluorinated alcohols. Moreover, no increase in the thermal stability of the modified coatings was observed. WebDec 3, 2014 · The invention relates to a method for preparing a hexamethylene diisocyanate biuret curing agent. The method comprises the following step of: adding different crystallized hydrates or a mixture of acetone and water to make water react with hexamethylene diisocyanate, removing white polyurea particles generated in the reaction … WebMar 1, 2024 · DESMODUR® N100 by Covestro is an aliphatic solvent-free HDI biuret polyisocyanate. It can be thinned with ethyl acetate, butyl acetate, methoxypropyl acetate, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, toluene, xylene and solvent naphtha® 100. DESMODUR® N100 has a shelf life of 6 months. phim harry potter 2