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US 9,371,413 B2Granted
Pentamethylenediisocyanate, method for producing pentamethylenediisocyanate, polyisocyanate composition, polyurethane resin, and polyurea resin
AssigneeMitsui Chemicals, Inc.
InventorsToshihiko Nakagawa, Hiroshi Takeuchi, Kuniaki Sato, Satoshi Yamasaki
Life of this patent
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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:
Claims2
A polyurethane resin produced by allowing a pentamethylene diisocyanate and/or a polyisocyanate composition to react with an active hydrogen compound,
- wherein the pentamethylene diisocyanate is 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;
- and
- the polyisocyanate composition is obtained by modifying the pentamethylene diisocyanate, and 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,
5 more elements
Dependencies are inferred from the claim text.