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Polyisocyanate composition, coating composition and coating base material

A polyisocyanate and composition technology, applied in polyurea/polyurethane coatings, coatings, organic chemistry, etc., can solve the problems of carbon dioxide generation, difficult to disperse, etc., and achieve the effects of excellent hardness and water resistance, appearance and water resistance.

Active Publication Date: 2021-06-18
ASAHI KASEI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polyisocyanate used as a curing agent in the two-component urethane coating composition has the problems of being difficult to disperse in water and easily reacting with water to generate carbon dioxide

Method used

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  • Polyisocyanate composition, coating composition and coating base material
  • Polyisocyanate composition, coating composition and coating base material
  • Polyisocyanate composition, coating composition and coating base material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0290] Hereinafter, although an Example and a comparative example are given and this invention is demonstrated more concretely, this invention is not limited to a following example unless the summary is exceeded.

[0291] The physical properties and evaluation of the polyisocyanate composition in Examples and Comparative Examples were measured as follows. In addition, unless otherwise stated, "part" and "%" mean "part by mass" and "% by mass".

[0292]

[0293] [Physical property 1] Viscosity

[0294] The viscosity was measured at 25° C. using an E-type viscometer (manufactured by Tokimec, Inc.). Use standard rotor (1°34’×R 2 4). The rotation speed is as follows.

[0295] (Rotating speed)

[0296] 100r.p.m. (less than 128mPa·s)

[0297] 50r.p.m. (128mPa·s above and less than 256mPa·s)

[0298] 20r.p.m. (over 256mPa·s and less than 640mPa·s)

[0299] 10r.p.m. (over 640mPa·s and less than 1280mPa·s)

[0300] 5r.p.m. (1280mPa·s above and less than 2560mPa·s)

[0301] ...

Synthetic example 1-1

[0362] [Synthesis Example 1-1] Synthesis of HES / DPOA

[0363] 1-propanol: 10 mass parts was added to 70 mass % 2-hydroxyethanesulfonic acid (it may abbreviate as "HES" hereafter) aqueous solution: 20 mass parts, it stirred, and obtained the solution. Furthermore, N,N-dipropyl octylamine (hereinafter sometimes abbreviated as "DPOA") was weighed so that the molar equivalent ratio with respect to HES was 1, diluted with 1-propanol of the same mass part, and the obtained The liquid is added dropwise to the preceding solution under stirring. After 1 hour from the start of the dropwise addition, the stirring was stopped, and dehydration and solvent removal were carried out by an evaporator to obtain 2-hydroxyethanesulfonic acid dimethylpropylamine salt (hereinafter sometimes abbreviated as "HES / DPOA") with a solid content of 99.8% by mass. ).

Synthetic example 1-2

[0364] [Synthesis Example 1-2] Synthesis of HES / DMPA

[0365] 2-Hydroxyethanesulfonic acid N,N with a solid content of 99.8% by mass was obtained in the same manner as in Synthesis Example 1-1, except that dimethylpropylamine (hereinafter sometimes abbreviated as "DMPA") was used instead of DPOA. - Dipropyloctylamine salt (hereinafter sometimes abbreviated as "HES / DMPA").

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Abstract

The present invention provides a polyisocyanate composition and the like, which contains tertiary ammonium cations of an amine compound and a polyisocyanate that contains a sulfonate anion group in each molecule, and which is configured such that: the tertiary ammonium cations of the amine compound contain tertiary ammonium cations of at least one amine compound that is selected from among amine compounds of general formulae (1) and (2); and the content of the tertiary ammonium cations of the selected amine compound is 70% by mole or more relative to the total molar quantity of the tertiary ammonium cations of all amine compounds in the composition.

Description

technical field [0001] The present invention relates to polyisocyanate compositions, coating compositions and coated substrates. Background technique [0002] In recent years, from the viewpoint of environmental protection, the water-based conversion of room-temperature crosslinkable two-component urethane coating compositions conventionally used as solvent-based coatings has been desired. However, the polyisocyanate used as a curing agent in the two-component urethane coating composition has the problems of being difficult to disperse in water and easily reacting with water to generate carbon dioxide. Therefore, polyisocyanates having high emulsifiability and suppressing the reaction of isocyanate groups with water in a water-dispersed state are being developed. [0003] Patent Document 1 discloses a reaction product of a polyisocyanate compound and a compound having at least one sulfonic acid group and isocyanate group. [0004] Patent Document 2 and Patent Document 3 di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C309/10C09D175/04C08G18/38C08G18/73C08G18/75C08G18/76C08G18/77
CPCC09D175/04C08G18/775C08G18/0828C08G18/62C08G18/288C08G18/792C08G18/706
Inventor 李冠中岛和子山内理计
Owner ASAHI KASEI KK
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