Aliphatic polyurea coating, the method for preparing the same and the use thereof
AssigneeBayer Intellectual Property GmbH
InventorsFrank Zhang, Jianping Shen
Life of this patent
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Abstract
The present invention pertains to an aliphatic polyurea coating, comprising a product mixed by the components including NCO-terminated polycarbonate diol modified and/or of ether polyol modified isophorone diisocyanate (IPDI) prepolymer; hexamethylene diisocyanate (HDI) oligomers; and amino resin comprising sterically hindered secondary aliphatic diamines. The aliphatic polyurea coating layer prepared by the aliphatic polyurea coating presented in this invention possesses good elongation and tensile strength, good flexibility in low temperature, good abrasion resistance, good adhesion property, good weatherability and good chemical resistance.
Claims18
1-16. (canceled)
An aliphatic polyurea coating comprising a product mixed by the components A, B and C:
- A) 30-50 parts by weight of NCO-terminated polycarbonate diol modified and/or polyether polyol modified isophorone diisocyanate (IPDI) prepolymer;
- B) 3-15 parts by weight of hexamethylene diisocyanate (HDI) oligomers;
- and
- C) 10-25 parts by weight of amino resin comprising sterically hindered secondary aliphatic diamines.
A method for preparing an aliphatic polyurea coating, comprising the step of mixing the components including A, B and C:
- A) 30-50 parts by weight of NCO-terminated polycarbonate diol modified and/or polyether polyol modified isophorone diisocyanate (IPDI) prepolymer;
- B) 3-15 parts by weight of hexamethylene diisocyanate (HDI) oligomers;
- and
- C) 10-25 by weight of amino resin comprising sterically hindered secondary aliphatic diamines.
Dependencies are inferred from the claim text.