The invention pertains generally to providing an increased amount of both hydrophobicity and oleophobicity by the combination of at least one silane and at least one siloxane, the silane preferably being a trialkoxysilane of Formula (I) and at least one polysiloxane of Formula (II), the combined composition of silane and polysiloxane having no added perfluorinated compounds. The invention further includes an ability to darken the color of the surface to which it is applied by at least 5, preferably 10 “L” units, giving the surface more of a “wet” look.

The invention pertains generally to providing an increased amount of both hydrophobicity and oleophobicity by the combination of at least one silane and at least one siloxane, the silane preferably being a trialkoxysilane of Formula (I) and at least one polysiloxane of Formula (II), the combined composition of silane and polysiloxane having no added perfluorinated compounds. The invention further includes an ability to darken the color of the surface to which it is applied by at least 5, preferably 10 “L” units, giving the surface more of a “wet” look.

Described are sealing primer compositions that can be used to reduce paint defects such as pops or vapor boil on painted plastic substrates, as well as related methods for sealing plastic substrates, and sealed plastic substrates. Sealing primer compositions of the invention include a functionalized polydiene polymer such as a hydroxylated or other functional-group-containing polybutadiene polymer.

The present invention relates primarily to the use of a mixture for reducing dust formation and/or erosion. The invention relates additionally to a method for reducing dust formation and/or erosion and also to a mixture suitable for this purpose.

A heat exchanger coating composition includes an aqueous dispersion having a water-repellent resin containing spherical particles with an average particle size of 2 μm or more and 50 μm or less.

A moisture barrier laminated film (10) includes: a plastic film (A) having an inorganic barrier layer (A1); a moisture trapping layer (B) containing an alkali component; and a coating layer (C) provided between the inorganic barrier layer (A1) and the moisture trapping layer (B). In the coating layer (C), a moisture permeability at 40° C. and 90%RH is 6.0 × 10.sup.4 g/m.sup.2/day or less, and a storage modulus E′ (at 2π rad/s) in viscoelasticity measurement at 85° C. is 30 MPa or more.

A water-resistant film layer, a preparation method therefor, and a product. The water-resistant film layer is formed on a surface of a substrate by one or more compounds shown in general formula (I) by means of a plasma chemical vapor deposition method, i.e., R.sub.1R.sub.2═R.sub.3R.sub.4(I), wherein R.sub.1 and R.sub.2 are each independently selected from one of a group consisting of hydrogen, alkyl, halogen, haloalkyl, and aryl, at least one of R.sub.1, R.sub.2, and R.sub.3 is halogen, and R.sub.4 is a hydrophobic functional group, typically having a fluorine-containing alky structure.

##STR00001##

A water-resistant film layer, a preparation method therefor, and a product. The water-resistant film layer is formed on a surface of a substrate by one or more compounds shown in general formula (I) by means of a plasma chemical vapor deposition method, i.e., R.sub.1R.sub.2═R.sub.3R.sub.4(I), wherein R.sub.1 and R.sub.2 are each independently selected from one of a group consisting of hydrogen, alkyl, halogen, haloalkyl, and aryl, at least one of R.sub.1, R.sub.2, and R.sub.3 is halogen, and R.sub.4 is a hydrophobic functional group, typically having a fluorine-containing alky structure.

##STR00001##

The invention relates to a method for installing metallic fastener (10; 40) for the interference fit assembly of at least two structural elements (20, 22) comprising a through hole, the fastener comprising an enlarged head (12; 42), a shaft (14; 44) having an external diameter before installation that is greater than an internal diameter of the hole, said shaft comprising a conductive surface (26; 56). Before installation, at least the conductive surface (26; 56) is coated with a lubricating layer (30), which comprises a mixture of at least one polyolefin and one polytetrafluoroethylene, for example, having sufficient adherence to prevent its abrasion by manual manipulation of the fastener and being weak enough to be at least partly stripped from the conductive surface during the interference fit assembly of the fastener. The invention is applicable to the assembly of aircraft structures.

The invention relates to a method for installing metallic fastener (10; 40) for the interference fit assembly of at least two structural elements (20, 22) comprising a through hole, the fastener comprising an enlarged head (12; 42), a shaft (14; 44) having an external diameter before installation that is greater than an internal diameter of the hole, said shaft comprising a conductive surface (26; 56). Before installation, at least the conductive surface (26; 56) is coated with a lubricating layer (30), which comprises a mixture of at least one polyolefin and one polytetrafluoroethylene, for example, having sufficient adherence to prevent its abrasion by manual manipulation of the fastener and being weak enough to be at least partly stripped from the conductive surface during the interference fit assembly of the fastener. The invention is applicable to the assembly of aircraft structures.