Compositions and methods for use provide enhanced surface modification in leather care. In particular, the present disclosure is directed to water-based compositions including a silicone emulsion that delivers cleaning, protective, and preservative qualities.

The invention relates to a method for hydrophobising leather, comprising the steps: providing tanned, at least partly dried leather whose content of free water is in the range of from 0 to 25 wt. %, based on the weight of the dried leather, treating the leather with a mixture of compressed gas and a hydrophobising agent at a pressure of at least 30 bar in a pressure vessel, and relieving the pressure of the pressure vessel to ambient pressure.

By using the method according to the invention it is possible to obtain leather which is hydrophobised at the surface, as well as thick and firm, deeply hydrophobised leather, as is used, for example, for shoe soles.

The invention relates to a method for hydrophobising leather, comprising the steps: providing tanned, at least partly dried leather whose content of free water is in the range of from 0 to 25 wt. %, based on the weight of the dried leather, treating the leather with a mixture of compressed gas and a hydrophobising agent at a pressure of at least 30 bar in a pressure vessel, and relieving the pressure of the pressure vessel to ambient pressure.

By using the method according to the invention it is possible to obtain leather which is hydrophobised at the surface, as well as thick and firm, deeply hydrophobised leather, as is used, for example, for shoe soles.

An electrical device capable of water-resisting, vapor resistant and electrically conducting in a moisture-containing environment and a method for making such electrical device are provided. The present invention for use in electrically conductive aqueous solutions enables the electrical device to be electrically conductive in any direction because of quantum tunneling effect. The electrical device includes a device body having at least one surface, and a plurality of nano-particles embedded in one of surface pores of the at least one surface of the device body. The particle size of the nano-particles is less than tens of nanometers.

Compositions and methods for use provide enhanced surface modification in leather care. In particular, the present disclosure is directed to water-based compositions including a silicone emulsion that delivers cleaning, protective, and preservative qualities.

Compositions and methods for use provide enhanced surface modification in leather care. In particular, the present disclosure is directed to water-based compositions including a silicone emulsion that delivers cleaning, protective, and preservative qualities.

Flame retardant synthetic leather having high flame retardancy and excellent physical properties (light resistance, heat resistance and feeling). The flame retardant synthetic leather contains an organic phosphorus compound (component A) represented by the following formula (1). ##STR00001##
(In the formula, X.sup.1 and X.sup.2 are the same or different and each an aromatic substituted alkyl group represented by the following formula (2).)
AL(Ar).sub.n(2)
(In the formula, AL is a branched or linear aliphatic hydrocarbon group having 1 to 5 carbon atoms, and Ar is a phenyl group, naphthyl group or anthryl group, all of which may have a substituent. n is an integer of 1 to 3, and Ar may be bonded to any carbon atom contained in AL.)

Flame retardant synthetic leather having high flame retardancy and excellent physical properties (light resistance, heat resistance and feeling). The flame retardant synthetic leather contains an organic phosphorus compound (component A) represented by the following formula (1). ##STR00001##
(In the formula, X.sup.1 and X.sup.2 are the same or different and each an aromatic substituted alkyl group represented by the following formula (2).)
AL(Ar).sub.n(2)
(In the formula, AL is a branched or linear aliphatic hydrocarbon group having 1 to 5 carbon atoms, and Ar is a phenyl group, naphthyl group or anthryl group, all of which may have a substituent. n is an integer of 1 to 3, and Ar may be bonded to any carbon atom contained in AL.)

A fluorine-free composition includes at least one polycarbodiimide compound derived from a carbodiimidization reaction of a carbodiimidization reaction mixture comprising at least one oligomer, wherein the oligomer comprises at least one isocyanate end group and at least two repeating units, wherein each of the at least two repeating units comprises at least one hydrocarbon group having at least 16 carbon atoms. The composition may also include at least one paraffin wax. Such compositions are useful for treating fibrous substrates to enhance their water-repellency.

A fluorine-free composition includes at least one polycarbodiimide compound derived from a carbodiimidization reaction of a carbodiimidization reaction mixture comprising at least one oligomer, wherein the oligomer comprises at least one isocyanate end group and at least two repeating units, wherein each of the at least two repeating units comprises at least one hydrocarbon group having at least 16 carbon atoms. The composition may also include at least one paraffin wax. Such compositions are useful for treating fibrous substrates to enhance their water-repellency.