Provided is an antifouling composition including a polysilazane-based compound (A) and a both terminal carboxy-modified silicone (B), the content of the component (B) being from 0.01 to 10 parts by mass based on 100 parts by mass of the total amount of the component (A), and the antifouling composition serves as a sheet-like antifouling layer-forming material. The antifouling composition is able to form a sheet-like antifouling layer having favorable surface state and curability and also having excellent water repellency such that even when a tilt angle is small, water droplets can be slipped off.

A curable composition comprising a condensate having an alkyl group having 6 to 30 carbon atoms, wherein the curable composition has at least one peak with a concentration fraction of 250000 or more in a range where the molecular weight in terms of standard polyethylene glycol is 500 or more and 2000 or less in a differential molecular weight distribution curve determined from a chromatogram obtained by GPC chromatography.

The present invention provides a self-healing anti-icing ACSR with composite microporous structure, which is formed lower layer pores with a small diameter (durable storage remediator) and upper layer pores with a large diameter (increase a proportion of air cushion to improve anti-icing performance) by growing a uniform porous aluminum membrane on the surface of an aluminum base body. By optimizing the diameter and thickness of the lower layer pores and upper layer pores, and under the action of air pressure, capillary force and surface energy, a low surface energy remediator is immersed in pores, so an anti-icing ACSR with durable excellent anti-icing self-healing performance is prepared. The invention improves the anti-icing performance of the ACSR in practical applications and the self-healing of the anti-icing performance after being damaged, thereby extending the anti-icing life of the ACSR and improving the durable anti-icing performance thereof.

The present invention provides a self-healing anti-icing ACSR with composite microporous structure, which is formed lower layer pores with a small diameter (durable storage remediator) and upper layer pores with a large diameter (increase a proportion of air cushion to improve anti-icing performance) by growing a uniform porous aluminum membrane on the surface of an aluminum base body. By optimizing the diameter and thickness of the lower layer pores and upper layer pores, and under the action of air pressure, capillary force and surface energy, a low surface energy remediator is immersed in pores, so an anti-icing ACSR with durable excellent anti-icing self-healing performance is prepared. The invention improves the anti-icing performance of the ACSR in practical applications and the self-healing of the anti-icing performance after being damaged, thereby extending the anti-icing life of the ACSR and improving the durable anti-icing performance thereof.

The present invention relates to a leakage-preventing high performance desiccant composition and a preparation method therefor, wherein a solid desiccant composition includes calcium chloride (CaCl.sub.2), magnesium chloride (MgCl.sub.2), and metal oxide, wherein the metal oxide may be calcium oxide (CaO), and a gel desiccant composition includes metal chloride and an absorbent polymer, wherein the metal chloride may be calcium chloride (CaCl.sub.2) and magnesium chloride (MgCl.sub.2), and the absorbent polymer may be CMC (carboxymethyl cellulose).

Compositions of matter that are antifreeze composition, coolants, heat transfer fluids, and de-icing fluids based on the use of coalescent efficient glycol ethers.

A surface-treating agent including a perfluoro(poly)ether group-containing silane compound and a perfluoro(poly)ether group-containing compound. The perfluoro(poly)ether group-containing compound contains a radical capturing group or a UV absorbing group in the molecule.

According to the present invention, a surface treatment agent which contains a coating composition that contains (A) one or more compounds selected from among organosilane or siloxane compounds represented by formula (1) and partial (hydrolysis) condensation products of the compounds and (B) one or more compounds selected from among silane or siloxane compounds represented by formula (2) and partial (hydrolysis) condensation products of the compounds at a mass ratio of from 50:50 to 90:10 is able to form a cured coating film that has excellently low fingerprint visibility. ##STR00001##
(In formula (1), A represents —C(═O)OR.sup.1, —C(═O)NR.sup.1.sub.2, —C(═O)SR.sup.1 or —P(═O)(OR.sup.1).sub.2; R.sup.1 represents H, an alkyl group, an aryl group or an aralkyl group; Y represents a divalent organic group; R represents an alkyl group or a phenyl group; X represents a hydroxyl group or a hydrolyzable group; and n is 1-3.) ##STR00002##
(In formula (2), Rf represents a perfluoroalkylene group or a divalent perfluoropolyether group.)

The present invention enables the achievement of a coating agent composition which contains a perfluoropolyether compound (A) of a specific structure, and dissolves into at least one volatile organic solvent that does not contain a fluorine atom without using a fluorine-containing solvent having a boiling point of 260° C. or less at atmospheric pressure by setting the content ratio of a non-functional perfluoropolyether compound (B) relative to a total of 100% by mole of the component (A) and the component (B) to less than 2.5% by mole, while forming a cured coating film by being rapidly cured on a base material, said cured coating film firmly adhering to the base material and exhibiting excellent water repellent oil repellent properties, sliding properties, mold releasability and the like.

The present invention enables the achievement of a coating agent composition which contains a perfluoropolyether compound (A) of a specific structure, and dissolves into at least one volatile organic solvent that does not contain a fluorine atom without using a fluorine-containing solvent having a boiling point of 260° C. or less at atmospheric pressure by setting the content ratio of a non-functional perfluoropolyether compound (B) relative to a total of 100% by mole of the component (A) and the component (B) to less than 2.5% by mole, while forming a cured coating film by being rapidly cured on a base material, said cured coating film firmly adhering to the base material and exhibiting excellent water repellent oil repellent properties, sliding properties, mold releasability and the like.