Polyurethane and/or polyurea dispersions in active...

Details Polyurethane and/or polyurea dispersions in active... Polyurethane and/or polyurea dispersions in active...

C - Chemistry, Metallurgy

08

L

400/4302, 400/55

C08L 75/02 (2006.01) C08G 18/08 (2006.01) C08G 18/32 (2006.01) C08G 18/40 (2006.01) C08L 75/04 (2006.01)

Patent

CA 2025098

Polyurethane and/or polyurea dispersions are prepared by reacting certain coreactants with a poly- isocyanate in the presence of a preformed polyurethane and/or polyurea dispersion. The resulting products are especially useful to prepare flexible polyurethane foams which exhibit low shrinkage. In addition, polyurethane and/or polyurea dispersions having a bimodal particle size distribution are disclosed.

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