Isocyanate composition, method for producing isocyanate composition, and method for producing isocyanate polymer
An isocyanate composition according to the present invention contains an isocyanate compound of formula (1) and/or (2) (wherein R 1 represents a hydrogen or a monovalent organic group, and R 2 represents a monovalent organic group), and, relative to the total mass of the isocyanate compound in the composition, 1.0 ppm by mass to 10% by mass of a compound of formula (3): R 13 —(COO—R 14 )a (wherein R 13 represents an organic group with a valence of a, R 14 represents a monovalent organic group, and a represents an integer of 1 or 2), which is different from the isocyanate compound, and/or, 1.0 ppm by mass to 10% by mass of a compound having an UV absorption in an area of decamer or higher isocyanates in a measurement spectrum of gel permeation chromatography.
1. An isocyanate composition comprising: an isocyanate compound of formula (1) and/or formula (2); and further comprising:
a compound of formula (3), which is different from the isocyanate compound, in an amount of 1.0 ppm by mass to 10% by mass, relative to a total mass of the isocyanate compound in the composition; and/or
a compound having an UV absorption in an area of decamer or higher isocyanates in a measurement spectrum of gel permeation chromatography, in an amount of 1.0 ppm by mass to 10% by mass, relative to the total mass of the isocyanate compound in the composition;
wherein R 1 represents a hydrogen or a monovalent organic group, and R 2 represents a monovalent organic group, and,
R 13 —(COO—R 14 ) a (3)
wherein R 13 represents an organic group with a valence of a, R 14 represents a monovalent organic group, and a represents an integer of 1 or 2.
2. The isocyanate composition according to claim 1 , further comprising, relative to the total mass of the isocyanate compound in the composition,
1.0 ppm by mass to 10% by mass of saturated and/or unsaturated hydrocarbon compounds having a linear-chain structure, a branched-chain structure, or a cyclic structure, and/or,
1.0 ppm by mass to 10% by mass of a compound having at least one bond selected from the group consisting an ether bond and a thioether bond.
3. The isocyanate composition according to claim 1 , further comprising 1.0 ppm by mass to 10% by mass, relative to the total mass of the isocyanate compound in the composition, of a carbamate group-containing compound and/or a carbonic acid ester.
4. The isocyanate composition according to claim 1 , further comprising:
1.0 ppm by mass to 10% by mass, relative to the total mass of the isocyanate compound in the composition, of a basic amino compound, and/or,
a halogen ion, and/or, a hydrolyzable halogen compound.
5. The isocyanate composition according to claim 1 , further comprising, relative to the total mass of the isocyanate compound in the composition,
1.0 ppm by mass to 1.0×10 3 ppm by mass of a phosphoric acid and/or a phosphoric acid ester, and/or,
1.0 ppm by mass to 1.0×10 3 ppm by mass of a sulfuric acid and/or a sulfuric acid ester.
6. The isocyanate composition according to claim 1 , comprising, as the isocyanate compound, a trifunctional isocyanate compound having three isocyanate groups in a molecule thereof, and a difunctional isocyanate compound having two isocyanate groups in a molecule thereof.
7. An isocyanate composition comprising an isocyanate compound of formula (1) and/or formula (2), comprising, relative to a total mass of the isocyanate compound in the composition, 1.0 ppm by mass to 1.0×10 3 ppm by mass of a phosphoric acid and/or a phosphoric acid ester, and/or, 1.0 ppm by mass to 1.0×10 3 ppm by mass of a sulfuric acid and/or a sulfuric acid ester,
wherein, R 1 represents a hydrogen or a monovalent organic group, Fe represents a monovalent organic group, and.
8. The isocyanate composition according to claim 1 , wherein an amount of the isocyanate compound, relative to the total mass of the isocyanate composition, is 90% by mass or more.
9. The isocyanate composition according to claim 1 , comprising the isocyanate compound of formula (1), and the isocyanate compound has a structure derived from an α-amino acid.
10. The isocyanate composition according to claim 1 , comprising the isocyanate compound of formula (2), and the isocyanate compound has a structure derived from a β-amino acid.
11. A method for producing an isocyanate composition of claim 9 , comprising: preparing the isocyanate compound of formula (1) using a corresponding α-amino acid by fermentation; and mixing the isocyanate compound with a compound of formula (3) and/or a compound having an UV absorption in an area of decamer or higher isocyanates in a measurement spectrum of gel permeation chromatography, wherein the α-amino acid is an amino acid having a purity of 90% or more,
wherein R 1 represents a hydrogen or a monovalent organic group, and R 2 represents a monovalent organic group,
R 13 —(COO—R 14 ) a (3)
wherein R 13 represents an organic group with a valence of a, R 14 represents a monovalent organic group, and a represents an integer of 1 or 2.
12. The method for producing an isocyanate composition according to claim 11 , further comprising a step in which the isocyanate compound is subjected to distillation purification.
13. A method for producing an isocyanate polymer comprising a step in which an isocyanate compound contained in an isocyanate composition of claim 1 is reacted, wherein
the isocyanate polymer comprises a unit of formula (4) and at least one unit selected from the group consisting of units of formulae (5), (6), (7), (8), (9), (10), (11) and (12), and
a nitrogen atom constituting the isocyanate polymer is bonded with a carbon atom,
wherein each R 3 independently represents a divalent hydrocarbon group and each R 4 independently represents a monovalent organic group.
14. The isocyanate composition according to claim 1 , comprising the compound of formula (3), which is different from the isocyanate compound, in an amount of 1.0 ppm by mass to 10% by mass, relative to a total mass of the isocyanate compound in the composition.
15. The isocyanate composition according to claim 1 , comprising the compound having an UV absorption in an area of decamer or higher isocyanates in a measurement spectrum of gel permeation chromatography, in an amount of 1.0 ppm by mass to 10% by mass, relative to the total mass of the isocyanate compound in the composition.
16. The isocyanate composition according to claim 1 , comprising the compound of formula (3), which is different from the isocyanate compound, in an amount of 3.0 ppm by mass to 1.0×10 3 ppm by mass, relative to a total mass of the isocyanate compound in the composition.
17. The isocyanate composition according to claim 1 , comprising the compound of formula (3), which is different from the isocyanate compound, in an amount of 5.0 ppm by mass to 3.0×10 3 ppm by mass, relative to a total mass of the isocyanate compound in the composition.
18. The isocyanate composition according to claim 1 , comprising the compound having an UV absorption in an area of decamer or higher isocyanates in a measurement spectrum of gel permeation chromatography, in an amount of 3.0 ppm by mass to 3.0×10 3 ppm by mass, relative to the total mass of the isocyanate compound in the composition.
19. The isocyanate composition according to claim 1 , comprising the compound having an UV absorption in an area of decamer or higher isocyanates in a measurement spectrum of gel permeation chromatography, in an amount of 10 ppm by mass to 1.0×10 3 ppm by mass, relative to the total mass of the isocyanate compound in the composition.
20. The isocyanate composition according to claim 1 , wherein the monovalent organic group of R 1 represents a group represented by —C(═O)OR 2 or —CH 2 —C(═O)O—R 2 .
21. An isocyanate composition according to claim 7 , wherein the monovalent organic group of R 1 represents a group represented by —C(═O)OR 2 or —CH 2 —C(═O)O—R 2 .
22. The method according to claim 11 , wherein the monovalent organic group of R 1 represents a group represented by —C(═O)OR 2 or —CH 2 —C(═O)O—R 2 .