A composition comprising a carbosilane polymer formed from at least one carbosilane monomer and at least one carbonyl contributing monomer. In some embodiments, the composition is suitable as gap filling and planarizing material, and may optionally include at least one chromophore for photolithography applications.

A composition comprising a carbosilane polymer formed from at least one carbosilane monomer and at least one carbonyl contributing monomer. In some embodiments, the composition is suitable as gap filling and planarizing material, and may optionally include at least one chromophore for photolithography applications.

Coated articles include a substrate and a periodic mesoporous organosilica layer adhered to a surface of the substrate. The coated articles may further include a secondary silane layer covalently attached the periodic mesoporous organosilica layer. Depending on the compositions of the layers, the combination of the periodic mesoporous organosilica layer and the secondary silane layer renders the surface of the substrate superhydrophobic or omniphobic. Methods for coating a surface of a substrate include contacting the surface with a mixture of a hydrolyzed organosilane and a poloxamer and curing the mixture on the surface to form a PMO-coated substrate. The methods may further include contacting the PMO-coated article with a secondary silane coating solution of one or more silanes, then curing the secondary silane coating solution to form a dual-coated article comprising a secondary alkylsilane layer covalently attached to the periodic mesoporous organosilica layer on the surface of the substrate.

Coated articles include a substrate and a periodic mesoporous organosilica layer adhered to a surface of the substrate. The coated articles may further include a secondary silane layer covalently attached the periodic mesoporous organosilica layer. Depending on the compositions of the layers, the combination of the periodic mesoporous organosilica layer and the secondary silane layer renders the surface of the substrate superhydrophobic or omniphobic. Methods for coating a surface of a substrate include contacting the surface with a mixture of a hydrolyzed organosilane and a poloxamer and curing the mixture on the surface to form a PMO-coated substrate. The methods may further include contacting the PMO-coated article with a secondary silane coating solution of one or more silanes, then curing the secondary silane coating solution to form a dual-coated article comprising a secondary alkylsilane layer covalently attached to the periodic mesoporous organosilica layer on the surface of the substrate.

The present application relates to a polymer, a method for preparing the same, and a use thereof. The present application provides a polymer, a method for preparing the same, and a use thereof. The present application can provide: a polymer, which has a composition for allowing a low solubility in polar and non-polar solvents and can be prepared in a simple polymerization manner, such as solution polymerization; and a use thereof.

The present application relates to a polymer, a method for preparing the same, and a use thereof. The present application provides a polymer, a method for preparing the same, and a use thereof. The present application can provide: a polymer, which has a composition for allowing a low solubility in polar and non-polar solvents and can be prepared in a simple polymerization manner, such as solution polymerization; and a use thereof.

There is provided synthetic proppants, and in particular polysilocarb derived ceramic proppants. There is further provided hydraulic fracturing treatments utilizing these proppants, and methods of enhance hydrocarbon recovery.

There is provided synthetic proppants, and in particular polysilocarb derived ceramic proppants. There is further provided hydraulic fracturing treatments utilizing these proppants, and methods of enhance hydrocarbon recovery.

A composition contains an organopolysiloxane having the following average chemical structure: X.sub.3SiO—SiR.sub.2—R′—(R.sub.2SiO).sub.x—R.sub.2Si—[R.sup.b—(R.sub.2SiO).sub.y—R.sub.2Si—R.sup.b′—(R.sub.2SiO).sub.z—R.sub.2Si].sub.m—R′—R.sub.2SiO—SiX.sub.3; where X is —OSiR.sub.2—R′—R.sub.2SiO—R.sub.2Si—R″-A; R is an alkyl group having from 2 to 6 carbons and aryl groups; R′, R″, R.sup.b and R.sup.b′ are divalent hydrocarbon groups comprising a chain of 2 to 6 methylene units; A is acrylate, methacrylate or trialkoxysilyl; provided that, on average, 60 to 90 mole-percent of the A groups are acrylate and methacrylate; Subscript m has an average value in a range of zero to 10; Subscripts x, y and z each has an average value in a range of zero to 1200; and provided that the average values of m, x, y and z are such that the sum of the average values for x, y and z is in a range of 300-1200 and the molar ratio of methylene units to siloxane units is less than 0.15.

A composition contains an organopolysiloxane having the following average chemical structure: X.sub.3SiO—SiR.sub.2—R′—(R.sub.2SiO).sub.x—R.sub.2Si—[R.sup.b—(R.sub.2SiO).sub.y—R.sub.2Si—R.sup.b′—(R.sub.2SiO).sub.z—R.sub.2Si].sub.m—R′—R.sub.2SiO—SiX.sub.3; where X is —OSiR.sub.2—R′—R.sub.2SiO—R.sub.2Si—R″-A; R is an alkyl group having from 2 to 6 carbons and aryl groups; R′, R″, R.sup.b and R.sup.b′ are divalent hydrocarbon groups comprising a chain of 2 to 6 methylene units; A is acrylate, methacrylate or trialkoxysilyl; provided that, on average, 60 to 90 mole-percent of the A groups are acrylate and methacrylate; Subscript m has an average value in a range of zero to 10; Subscripts x, y and z each has an average value in a range of zero to 1200; and provided that the average values of m, x, y and z are such that the sum of the average values for x, y and z is in a range of 300-1200 and the molar ratio of methylene units to siloxane units is less than 0.15.