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Organic microparticles

A technology of organic particles and particle shapes, applied in other chemical processes, coatings, chemical instruments and methods, etc., can solve the problems of water repellency reduction and achieve high sliding speed and excellent sliding properties

Pending Publication Date: 2022-05-13
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in fibers requiring water repellency, the color thickener tends to reduce water repellency

Method used

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  • Organic microparticles
  • Organic microparticles
  • Organic microparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0434] Hereinafter, although an Example is given and this invention is demonstrated in detail, this invention is not limited to these Examples.

[0435] Hereinafter, a part or % or a ratio means a weight part or a weight % or a weight ratio unless otherwise specified.

[0436] The sequence of tests is as follows.

[0437] [Number average molecular weight (Mn), weight average molecular weight (Mw), molecular weight distribution (Mw / Mn)]

[0438] Number average molecular weight (Mn), weight average molecular weight (Mw), and molecular weight distribution (Mw / Mn) were determined by gel permeation chromatography (GPC). In GPC, tetrahydrofuran was used as a developing solution, KF-606M, KF-601, and KF-800D manufactured by Shodex were used as columns, and molecular weights and the like were calculated in terms of polystyrene.

[0439] [Measurement of Thermal Properties by Differential Scanning Calorimetry (DSC)]

[0440] The melting points of the polymers were calculated by Diffe...

Synthetic example L1～L5

[0445] A chloroform solution of the polymer (solid content concentration: 1.0%) was spin-coated on a silicon wafer substrate (research high-purity silicon wafer AS ONE2-960-55), and heated at 80° C. for 15 minutes to form a coating film. 2 μL of water was dropped on the coating film, and the static contact angle after dropping for 1 second was measured with a fully automatic contact angle meter (Drop Master 701 manufactured by Kyowa Interface Science).

[0446] (organic particles)

[0447] The contact angle of the organic microparticles is measured as follows: drop-coat the aqueous dispersion of the organic microparticles on a glass substrate (made of soda-lime glass on slide glass), heat at 150° C. for 3 minutes, and prepare a substrate with the organic microparticles attached thereto. 2 μL of water was dropped on the glass substrate containing the organic fine particles, and the static contact angle after dropping for 1 second was measured with a fully automatic contact angl...

Synthetic example 2～44

[0522]Except having used the monomer shown in Table 1 as a monomer, the procedure similar to the synthesis example 1 was repeated. The results are shown in Table 1. In Synthesis Examples 25 to 28, in addition to the monomers shown in the table, a cationic emulsifier (lauryltrimethylammonium chloride) was added in a predetermined amount shown in the table with respect to the total amount of monomers, followed by polymerization. In Synthesis Example 29, in addition to the monomers shown in the table, 0.5% of a cationic emulsifier (lauryltrimethylammonium chloride) and polyethylene glycol monooleyl ether were added to the total amount of monomers. polymerization. The aqueous dispersion of the organic microparticles synthesized in Synthesis Example 13 was cast onto a glass substrate, air-dried, and then left to stand in an environment of -30° C. for 2 days. Then, when the substrate was taken out in an environment of 25° C., frost adhered to the glass, but no frost was observed o...

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Abstract

The present invention provides organic microparticles which can adhere to a base material in a state of having a particle shape, and which exhibit water repellency on the base material when adhered to the base material. Provided is an organic microparticle comprising a polymer having (1) a hydrophobic monomer having one ethylenically unsaturated double bond and at least one C3-40 hydrocarbon group, or (2) a repeating unit comprising a (meth) acrylic monomer having a polydimethylsiloxane group. The organic fine particles can impart excellent water repellency to a substrate.

Description

technical field [0001] The present invention relates to organic microparticles, and in particular, to non-fluorinated organic microparticles. Background technique [0002] Conventionally, water repellency has been imparted to the surface of substrates such as metal, glass, paper, cloth, plastic, etc. by chemical treatment of coating with fluororesin, silicone resin, or the like. It is known that, for example, by coating with a fluororesin, a water-repellent substrate surface with a water contact angle of about 120° can be obtained. [0003] In addition, by the method of forming a fine uneven structure on the surface of the substrate or the method of combining the formation of such a fine uneven structure on the surface of the substrate and the above-mentioned coating treatment, the water contact angle of 150° or more is given to the surface of the substrate. Ultra water repellent. The production of the concave-convex structure mainly includes a method of using fine particl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/06C08F220/04C08F220/10C08F220/54C08F212/12C08F220/18C08F12/12C08F220/32C08F212/36D06M15/233D06M15/263D06M15/273D06M23/08C09K3/18D06M101/32
CPCC08F212/06C08F220/04C08F220/10C08F220/54C08F212/12C08F220/18C08F12/12D06M15/233D06M15/263D06M15/273D06M23/08C09K3/18D06M2101/32C08F220/325C08F212/36C09D125/14D06M15/3568D06M15/267D06M15/643D06M2200/12C09D5/024C09D7/65C09D7/70C08F220/1804C08F220/20C08F220/34C08F220/1811C08F222/102C08F230/085D06N3/045D06N2209/142
Inventor 盐谷优子涩谷祥太稻益礼奈田中义人芥谅饭田真由美中野麻里奈东昌弘吉田知弘
Owner DAIKIN IND LTD
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