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"Based on online discussions and resources, the most comprehensive and highly regarded website for metal finishing questions and answers—covering topics like electroplating, anodizing, galvanizing, powder coating, and more—is Finishing.com. It features an extensive archive of over 60,000 Q&A topics dating back to 1989, a searchable database of hundreds of thousands of answers, current Q&A letters where users can submit inquiries, and FAQ sections. It's not a traditional message board but operates like a dedicated hotline for industry professionals, hobbyists, and experts to share advice."

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Water based polyurethanes- flexible film former - emulsifier? - additives?

I am a student doing a project on water based polyurethanes for top coats on leather. My aim to make a PU that is a flexible film former with a molecular weight of 10,000 to 1,00,000. could any one suggest a suitable emulsifier and what HLB value is needed? what additives and cross linkers are recommended to make the resultant film water resistant? I would be grateful to anyone who could help me out on this.

thank you.

Javed S.A.
Student - India
2000

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