Production method of 180-level polyurethane wire enamel
A production method and technology of polyurethane paint, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve problems such as risks for downstream users, and achieve the effects of reducing energy consumption, controlling production costs, and protecting the environment
Active Publication Date: 2014-09-03
NANTONG BAICHUAN NEW MATERIAL CO LTD +2
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Abstract
The invention discloses a production method of 180-level polyurethane wire enamel; hydroxyl-surplus primary polyurethane and a polyurethane closure are used for preparing a paint, during synthesis of the hydroxyl-surplus primary polyurethane, m-cresol/p-cresol is used for dissolving 1, 4-cyclohexanedimethanol, neopentyl glycol and trimethylolpropane, then pure MDI (methylene diphenyl diisocyanate) melted and liquefied in advance is used for reaction, and then the m-cresol/p-cresol and xylene are used for dilution; when in synthesis of the polyurethane closure, first the trimethylolpropane is added, then xylenol is used to dissolve the trimethylolpropane, then under the protection of nitrogen, the liquefied MDI is added, the MDI and the trimethylolpropane first react for chain extension reaction, then the cresol and the xylene are used for dilution; the hydroxyl-surplus primary polyurethane and the polyurethane closure are used for preparing the paint in a set ratio. The 180-level polyurethane wire enamel has excellent performances of heat shock resistance and softening breakdown resistance, is energy-saving in production process, may not produce by-products which are harmful to the environment, and is conducive to environment protection.
Application Domain
Polyurea/polyurethane coatings
Technology Topic
ChemistryMethylene diphenyl diisocyanate +11
Examples
- Experimental program(1)
Example Embodiment
PUM


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