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Polyisocyanate composition, blocked polyisocyanate composition, hydrophilic polyisocyanate composition, coating composition and coating film

A technology of polyisocyanate and triisocyanate, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of polyisocyanate viscosity increase, difficult handling, poor drying performance, etc., and achieve excellent water resistance, reduced solvent content, and good drying performance Effect

Active Publication Date: 2021-11-12
ASAHI KASEI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, as a problem of these aliphatic polyisocyanates, poor drying properties can be cited.
[0005] As a means to solve this problem, the technology of increasing the number of isocyanate functional groups in polyisocyanate is known, but generally, when the number of isocyanate functional groups is increased, the viscosity of polyisocyanate increases and handling becomes difficult, so there are limitations.

Method used

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  • Polyisocyanate composition, blocked polyisocyanate composition, hydrophilic polyisocyanate composition, coating composition and coating film
  • Polyisocyanate composition, blocked polyisocyanate composition, hydrophilic polyisocyanate composition, coating composition and coating film
  • Polyisocyanate composition, blocked polyisocyanate composition, hydrophilic polyisocyanate composition, coating composition and coating film

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0150] The polyisocyanate composition of 1st Embodiment of this invention contains the polyisocyanate compound represented by General formula (I), (II), (III), or (IV).

[0151]

[0152] [in general formula (I), (II), (III) and (IV), there are multiple R 11 , R 21 , R 31 and R 41 Each is independently an organic group, and there are multiple R 11 , R 21 , R 31 and R 41 At least one of them is a group represented by general formula (V) or (VI). There are multiple R 11 , R 21 , R 31 and R 41 are optionally the same or different from each other. In general formula (III), R 32 It is a residue obtained by removing one hydroxyl group from a monohydric or higher alcohol. ]

[0153]

[0154] [in the general formula (V), there are a plurality of Y 1 They are each independently a single bond, or a divalent hydrocarbon group having 1 to 20 carbon atoms that optionally includes an ester structure and / or an ether structure. There are multiple Y's 1 are optionally the...

Embodiment

[0726] Hereinafter, specific examples and comparative examples are given to describe embodiments of the present invention more specifically, but the embodiments of the present invention are not limited to the following examples and comparative examples unless the gist is exceeded.

[0727] The physical properties of the polyisocyanate compositions in Examples (1-1)-1 to (1-1)-28 and Comparative Examples (1-1)-1 to (1-1)-10 were measured as follows. In addition, "parts" and "%" mean "parts by mass" and "% by mass" unless otherwise specified.

[0728]

[0729]The viscosity was measured at 25° C. using an E-type viscometer (manufactured by TOKIMEC Corporation). For the measurement, a standard rotor (1°34'×R24) was used. The rotation speed is as follows.

[0730] 100rpm (less than 128mPa·s)

[0731] 50rpm (128mPa·s~256mPa·s)

[0732] 20rpm (256mPa·s~640mPa·s)

[0733] 10rpm (640mPa·s~1280mPa·s)

[0734] 5rpm (1280mPa·s~2560mPa·s)

[0735]

[0736] The NCO content (mass ...

Synthetic example (1-1

[0799] Synthesis of NTI

[0800] Dissolve 1060 g of 4-aminomethyl-1,8-octamethylenediamine (hereinafter sometimes referred to as "triamine") in 1500 g of methanol in a four-necked flask equipped with a stirrer, a thermometer, and a gas inlet tube. While cooling, 1800 ml of 35% concentrated hydrochloric acid was slowly added dropwise thereto. Methanol and water were removed under reduced pressure, concentrated, and dried at 60° C. / 5 mmHg for 24 hours to obtain triamine hydrochloride as a white solid. The obtained triamine hydrochloride 650g was suspended in 5000g of o-dichlorobenzene in the form of micropowder, the reaction solution was heated up while stirring, and phosgene was blown into at a speed of 200g / hour when it reached 100°C, and then Continue to raise the temperature and keep it at 180° C., and continue blowing in phosgene for 12 hours. After distilling off dissolved phosgene and solvent under reduced pressure, carry out vacuum distillation to obtain colorless and ...

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Abstract

The present invention provides a kind of polyisocyanate composition etc., it comprises the polyisocyanate compound represented by general formula (I), (II), (III) or (IV) (in the formula, there are multiple R 11 , R 21 , R 31 and R 41 Each is independently an organic group, and there are multiple R 11 , R 21 , R 31 and R 41 At least one of them is general formula (V) (in the formula, there are multiple Y 1 Each independently represents a single bond or the like. R 51 for hydrogen atoms, etc. A wavy line means a group indicated by a bond) or the like. In general formula (III), R 32 is a residue obtained by removing one hydroxyl group from a monohydric or higher alcohol).

Description

technical field [0001] The present invention relates to polyisocyanate compositions, blocked polyisocyanate compositions, hydrophilic polyisocyanate compositions, coating compositions and coating films. [0002] This application is based on Japanese Patent Application No. 2016-203095 filed in Japan on October 14, 2016, Japanese Patent Application No. 2016-203088 filed in Japan on October 14, 2016, and Japanese Patent Application No. 2016-203082 filed in Japan on October 14, 2016. , Special Application 2016-203111 filed in Japan on October 14, 2016, Special Application 2016-203090 filed in Japan on October 14, 2016, Special Application 2016-203089, 2016 filed in Japan on October 14, 2016 Japanese Patent Application No. 2016-203097 filed in Japan on October 14, 2016 and Japanese Patent Application No. 2016-203083 filed in Japan on October 14, 2016 claim priority, the contents of which are incorporated herein by reference. Background technique [0003] Conventionally, urethane...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/02C08G18/80C09D175/04
CPCC08G18/798C09D175/04C08G18/8064C08G18/8077C08G18/792C08G18/286C08G18/6225C08G18/73C08G18/283C08G18/771C08G18/807C08G18/022C08G18/027C08G18/285C08G18/725
Inventor 东孝一郎三轮祐一藤本克宏原田佳司郎
Owner ASAHI KASEI KK
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