Transcription of Role of Polyisocyanate in PU Coatings - Ramcharan
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Role of Polyisocyanate in PU Coatings - Ramcharan
PRODUCT DEVELOPMENT INFORMATIONVOLUME 2 ISSUE 2 MAY 20121 of 5 How to make a PU SystemPolyurethanes Coatings are made from macromolecules or polymers formed by the reaction between a Polyisocyanate and another polymer commonly known as a polyol that contains active hydrogens (OH, ).The choice of raw materials, both polyols and polyisocyanates is very large, enabling many combinations with a wide variety of properties. Reaction to form polyurethanePolyurethanes based on aliphatic polyisocyanates are well known for their outstanding properties and especially for their exceptional resistance to weathering and chemical attack. 1K & 2K SystemsPolyurethanes based on aliphatic polyisocyanates are renowned for their outstanding properties and especially for their exceptional resistance to weathering and chemical attack. Two main categories of polyurethane systems can be distinguished: two-component (or 2K) and heat-activated, one-component (or 1K).
PRODUCT DEVELOPMENT INFORMATION VOLUME 2 • ISSUE 2 • MAY 2012 Exceptional Gloss Retention Polyurethane coatings made from aliphatic polyisocyanates have exceptional gloss retention
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