A polysiloxazane compound having an alkoxysilyl group having an average composition of formula (1): ##STR00001##
wherein R.sup.1 represents a monovalent hydrocarbon group. R.sup.2 represents a monovalent hydrocarbon group, R.sup.3 represents an unsubstituted monovalent hydrocarbon group, R.sup.4 represents a divalent hydrocarbon group having 2 to 20 carbon atoms, X represents a methyl group, Y represents a group of formula (2) or (3) below: ##STR00002##
(R.sup.2 is same as above. R.sup.5 and R.sup.6 represent a monovalent hydrocarbon group, Z represents a divalent hydrocarbon group and the like, p is an integer of 0 to 9, and q is 0, 1, or 2.), n is an integer of 11 to 500, m is 0, 1, or 2, r is 0 or 1, and a, b, and c are numbers that satisfy 0<a<1, 0≤b<1, 0<c<1, and a+2b+2c=1.

A polysiloxazane compound having an alkoxysilyl group having an average composition of formula (1): ##STR00001##
wherein R.sup.1 represents a monovalent hydrocarbon group. R.sup.2 represents a monovalent hydrocarbon group, R.sup.3 represents an unsubstituted monovalent hydrocarbon group, R.sup.4 represents a divalent hydrocarbon group having 2 to 20 carbon atoms, X represents a methyl group, Y represents a group of formula (2) or (3) below: ##STR00002##
(R.sup.2 is same as above. R.sup.5 and R.sup.6 represent a monovalent hydrocarbon group, Z represents a divalent hydrocarbon group and the like, p is an integer of 0 to 9, and q is 0, 1, or 2.), n is an integer of 11 to 500, m is 0, 1, or 2, r is 0 or 1, and a, b, and c are numbers that satisfy 0<a<1, 0≤b<1, 0<c<1, and a+2b+2c=1.

The present invention relates to new coating compositions for the preparation of functional surface coatings on various base material substrates. The coating compositions are based on a silazane-containing polymer and a non-polymeric phenolic compound comprising at least two and not more than four aromatic units in its molecular structure. The coating compositions provide improved physical and chemical surface properties and may be applied by user-friendly coating methods.

The present invention relates to new coating compositions for the preparation of functional surface coatings on various base material substrates. The coating compositions are based on a silazane-containing polymer and a non-polymeric phenolic compound comprising at least two and not more than four aromatic units in its molecular structure. The coating compositions provide improved physical and chemical surface properties and may be applied by user-friendly coating methods.

To provide a new silicon-containing polymer making it possible to form a cured film has features that its residual stress is small and crack resistance is high. A polycarbosilazane having particular cyclic structures.

To provide a new silicon-containing polymer making it possible to form a cured film has features that its residual stress is small and crack resistance is high. A polycarbosilazane having particular cyclic structures.

The adhesive composition includes: a cyclic organosilazane compound of the following general formula (1): ##STR00001##
wherein R.sup.1s each independently represent a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and p represents an integer of 3 to 8; and a hydrolyzable group-containing organosilicon compound containing an alkoxysilane compound of the following general formula (2) and/or a partial hydrolytic condensate thereof:
R.sup.2.sub.x—Si(OR.sup.3).sub.4-x   (2)
wherein R.sup.2 represents an unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms and optionally having an oxygen atom, R.sup.3 represents an unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and x represents an integer of 0 to 2.

A separator for a rechargeable lithium battery includes a porous substrate; and a coating layer on at least one surface of the porous substrate, wherein the coating layer is formed from a coating layer composition including an organosilazane compound, inorganic particles, an initiator, and a solvent, the coating layer includes a curable binder of the organosilazane compound and inorganic particles, the curable binder of the organosilazane compound includes a copolymer including a structural unit represented by Chemical Formula 1, a structural unit represented by Chemical Formula 2, and a structural unit represented by Chemical Formula 3, and a nitrogen (N) atom derived from Chemical Formula 1 is greater than about 0 at % and less than about 5 at % (atomic percent) in the coating layer, and a rechargeable lithium battery. Chemical Formula 1 to Chemical Formula 3 are as defined in the specification.

To provide an amorphous silicon forming composition, which has high affinity with a substrate, is excellent in filling properties, and is capable of forming a thick film. [Means for Solution] An amorphous silicon forming composition comprising: (a) a block copolymer comprising a linear and/or cyclic block A having a polysilane skeleton comprising 5 or more silicon and a block B having a polysilazane skeleton comprising 20 or more silicon, wherein at least one silicon in the block A and at least one silicon in the block B are connected by a single bond and/or a crosslinking group comprising silicon, and (b) a solvent.

The present invention provides a method for producing a novel amorphous silicon sacrifice film and an amorphous silicon forming composition capable of filling trenches having a high aspect ratio to form an amorphous silicon sacrifice film that is excellent in affinity with a substrate. A method for producing an amorphous silicon sacrifice film, comprising (i) polymerizing a cyclic polysilane comprising 5 or more silicon or a composition comprising the cyclic polysilane by light irradiation and/or heating to form a polymer having a polysilane skeleton, (ii) applying an amorphous silicon forming composition comprising said polymer having a polysilane skeleton, polysilazane and a solvent above a substrate to form a coating film, and (iii) heating the coating film in a non-oxidizing atmosphere.