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Non-water crosslinkable composition

A resin composition and compound technology, applied in the field of granular polyurea compounds and resin compositions, can solve the problems of limited final gloss control, coating block defects, difficult control of molecular weight and urea bond number, etc.

Pending Publication Date: 2022-08-02
ALLNEX NETHERLANDS BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Molecular weight and number of urea linkages in such systems are difficult to control and result in broad particle size distributions and, therefore, limited control of the final gloss of the matted coating composition
Additionally, the lack of control over the particle size distribution can lead to the presence of a high percentage of oversized particles that are larger than the applied dry film thickness of the coating, leading to blocky defects in the final coating

Method used

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  • Non-water crosslinkable composition
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  • Non-water crosslinkable composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A

[0279] In the table below, Examples are abbreviated as Ex and Comparative Examples are abbreviated as Comp Ex.

[0280] Formulations were prepared according to Table 1. will exclude TOLONATE TM All components except HDT-90 are mixed. Subsequently, TOLONATE was added slowly while stirring at 370-420 rpm using a propeller stirrer TM HDT-90. The resulting average particle size of the polyurea adduct of Example 1 was 40 μm, the cumulative volume percentage of particles smaller than 10 μm was 10%, and the cumulative volume percentage of particles larger than 20 μm was 82%. For Example 1, (PS at 90 vol% / PS at 10 vol%) = 4.9.

[0281] Table 1

[0282]

[0283]

[0284] 1 Calculated as: [( OK500 or 3300 weight) / ( 1915BA-75 WEIGHT OF NON-VOLATILE PART + TOLONATE TM Weight of non-volatile part of HDT-90+ OK500 or 3300 weight)]x100

[0285] The coating was applied to glass and the tack time and Persoz hardness were measured. The paint was also applied over a black so...

Embodiment B

[0290] Film-forming resins containing polyurea matting agents were prepared according to Table 3, the ingredients of which are listed under "Polyurea-Containing Polyols". Here, the particle size is adjusted according to the process conditions. More specifically, the amount of benzylamine is pre-dissolved in the reactor in 1915 Polyols, followed by TOLONATE TM HDT-90 (diluted to 50% solids with butyl acetate) was added to the reactor while using an anchor stirrer at 21-32°C at about 400 rpm (Examples 2 and 4 and Comparative Example 5) or 125 rpm ( Example 3 and Example 5 and Comparative Example 4) stirring. Subsequently, a crosslinkable composition was prepared by adding the remaining components shown in Table 3 under "Coating". All samples were formulated at the same solids content of 58 wt%.

[0291] table 3

[0292]

[0293] *In this experiment, TOLONATE was TM HDT-90 was diluted from the normal 90 wt% solids delivery form to 50 wt% solids.

[0294] The paint was ...

Embodiment C

[0299] A film-forming resin comprising a polyurea matting agent and optional dispersant was prepared according to Table 5a. The stated amount of benzylamine was pre-dissolved in the reactor 1915 Polyols, followed by TOLONATE TM HDT-90 (diluted to 60% solids with butyl acetate) was added to the reactor while stirring at about 125 rpm using an anchor stirrer at 20-30°C. The particle size distribution is then determined. The film-forming resin containing the polyurea adduct was diluted to 53% solids and then the viscosity was measured. In addition, crosslinkable compositions were prepared by adding components as shown in Table 5b. All samples were formulated at the same solids content of 55% of the crosslinkable composition.

[0300] Table 5a

[0301]

[0302]

[0303] *In this experiment, TOLONATE was TM HDT-90 was diluted from the normal 90 wt% solids delivery form to 60 wt% solids.

[0304] Table 5b

[0305]

[0306] The crosslinkable compositions in Tables 5...

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Abstract

Provided are a particulate polyurea compound a2) for reducing gloss of a coating, a resin composition comprising the particulate polyurea compound, and a crosslinkable composition, in which the volume% of particles of the particulate polyurea compound having a diameter of less than 10 [mu] m is equal to or less than 40%, and the volume% of a polyurea product having a diameter of greater than 20 [mu] m is equal to or greater than 11%.

Description

technical field [0001] The present invention relates to a particulate polyurea compound and a resin composition comprising the polyurea compound, which can provide a gloss-reduced coating. Furthermore, the present invention relates to a crosslinkable composition comprising this resin composition; a method of coating a substrate with said crosslinkable composition to obtain a substrate having a reduced gloss coating, and coating There is a reduced gloss substrate of the crosslinkable composition. Background technique [0002] It is notoriously difficult to achieve matting of particularly high solids (crosslinkable) compositions with conventional techniques such as silica based additives, waxes or micronized polymeric matting agents, and high loadings of such matting additives are required to achieve low gloss values. The use of high loadings of silica-based matting agents is known to result in low resistance to several chemicals and low coating stability. Therefore, there i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/62C08G18/79C09D167/00C09D175/04C08G18/28C08K5/21
CPCC08G18/6229C09D175/04C08G18/792C08G18/6225C08K5/21C09D167/00C08G18/2865C09D7/42C09D5/006C09D7/69C08L75/02C09D7/65C09D175/02
Inventor E·德沃尔夫B·诺尔德维F·法拉妮S·马斯R·柯艾肯
Owner ALLNEX NETHERLANDS BV
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