Pentamethylene diisocyanate, method for producing pentamethylene diisocyanate, polyisocyanate composition, polyurethane resin, and polyurea resin
AssigneeMitsui Chemicals, Inc.
InventorsToshihiko Nakagawa, Hiroshi Takeuchi, Kuniaki Sato, Satoshi Yamasaki
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Abstract
A Pentamethylene diisocyanate is obtained by phosgenating pentamethylenediamine or its salt obtained by a biochemical method, and contains 5 to 400 ppm of a compound represented by the general formula (1) below and a compound represented by the general formula (2) below in total:
Claims1
A polyisocyanate composition produced by modifying a pentamethylene diisocyanate obtained by phosgenating pentamethylenediamine or its salt obtained by a biochemical method and contains 5 to 200 ppm of a compound represented by the general formula (1) below and a compound represented by the general formula (2) below in total,
- wherein the polyisocyanate composition contains at least one functional group of (a) to (e) below:
- (a) an isocyanurate group,
- (b) an allophanate group,
- (c) a biuret group,
- (d) a urethane group, and
- (e) a urea group,
Dependencies are inferred from the claim text.