Lesson 3 Waterborne polyurethane

所屬欄目:合成革專業(yè)英語

The application viscosity of solutions of polyurethanes in organic solvents required fortechnical reasons imposes a restriction in terms of the molecular weight. By contrast,polyurethane/urea dispersions can be produced in the heterogeneous phase with alm ......(本文共 8311 字 )     [閱讀本文] >>


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