An aqueous solution composition containing a co-hydrolysate or a co-hydrolytic condensate of an organosilicon compound of formula (1) and an organosilicon compound of formula (2), or both the co-hydrolysate and the co-hydrolytic condensate: ##STR00001##
wherein R.sup.1 and R.sup.2 are each independently an alkyl group having 1 to 10 carbon atoms or an aryl group having 6 to 10 carbon atoms, R.sup.3 is an alkyl group having 12 to 24 carbon atoms, R.sup.4 and R.sup.5 are each independently an alkyl group having 1 to 6 carbon atoms, X is a halogen atom, m is an integer of 1 to 20, and n is an integer of 1 to 3.

A contaminant-sequestering coating includes a network of hydrolyzed silane compounds. The hydrolyzed silane compounds include a hydrophilic polar head region, a hydrophobic linker, and an anchor region including a silicon atom. The network of hydrolyzed silane compounds is devoid or substantially devoid of fluorine atoms. Methods of destroying one or more perfluoroalkyl and/or polyfluoroalkyl (PFAS) compounds present in a contaminant-containing liquid are also provided.

The present invention relates to aspartic acid ester-functional polysiloxanes, their use in the manufacture of curable compositions using polyisocyanate crosslinkers, in particular, in the manufacture of coating compositions, cured compositions obtained from said curable compositions and articles comprising the cured compositions.

The invention relates to silane mixtures comprising a silane of the formula I
(R.sup.1).sub.y(R.sup.2).sub.3-ySi—R.sup.3—(S—R.sup.4).sub.n—S.sub.x—R.sup.5  (I)
and a silane of the formula II
(R.sup.1).sub.y(R.sup.2).sub.3-ySi—R.sup.3—Si(R.sup.1).sub.y(R.sup.2).sub.3-y  (II)
where the molar ratio of silane of the formula I to silane of the formula II is 15:85-90:10. The silane mixture according to the invention can be prepared by mixing the silanes of the formula I and silanes of the formula II.

The invention relates to silane mixtures comprising a silane of the formula I
((R.sup.1).sub.y(R.sup.2).sub.3-ySi—R.sup.3—SH  (I)
and a silane of the formula II
(R.sup.1).sub.y(R.sup.2).sub.3-ySi—R.sup.3—(S—R.sup.4).sub.z—Si(R.sup.1).sub.y(R.sup.2).sub.3-y  (II)
where the molar ratio of silane of the formula I to silane of the formula II is 20:80-85:15. The silane mixture according to the invention can be prepared by mixing the silanes of the formula I and silanes of the formula II.

The invention relates to silane mixtures comprising a silane of the formula I
((R.sup.1).sub.y(R.sup.2).sub.3-ySi—R.sup.3—SH  (I)
and a silane of the formula II
(R.sup.1).sub.y(R.sup.2).sub.3-ySi—R.sup.3—(S—R.sup.4).sub.z—Si(R.sup.1).sub.y(R.sup.2).sub.3-y  (II)
where the molar ratio of silane of the formula I to silane of the formula II is 20:80-85:15. The silane mixture according to the invention can be prepared by mixing the silanes of the formula I and silanes of the formula II.

Provided is an alkyldiphenylmethane protective agent, which can prevent solidification or insolubilization of a compound by protecting a functional group of the compound to achieve easy separation and purification after a reaction. An alkyldiphenylmethane compound represented by general formula (1): ##STR00001## wherein Y represents —OR.sup.19 (wherein R.sup.19 represents a hydrogen atom or an active ester-type protecting group), —NHR.sup.20 (wherein R.sup.20 represents a hydrogen atom, a C.sub.1-6 linear or branched alkyl group, or an aralkyl group), isocyanate group, an azide group, or a halogen atom, Z represents a C.sub.1-4 linear or branched alkyl group, an alkenyl group, or a cycloalkyl group, at least one of R.sup.1 to R.sup.10 represents a group represented by formula (2):
—O—R.sup.11—X-A  (2) and the others each independently represent a hydrogen atom, a halogen atom, a C.sub.1-4 alkyl group, or a C.sub.1-4 alkoxy group; R.sup.11 represents a C.sub.1-16 linear or branched alkylene group; X represents O or CONR.sup.21 (wherein R.sup.21 represents a hydrogen atom or a C.sub.1-4 alkyl group); and A represents, for example, a group represented by formula (3): ##STR00002## wherein R.sup.12, R.sup.13, and R.sup.14 may be the same or different and each independently represent a C.sub.1-6 linear or branched alkyl group or an optionally substituted aryl group; R.sup.15 represents a single bond or a C.sub.1-3 linear or branched alkylene group; and R.sup.16, R.sup.17, and R.sup.18 each independently represent a C.sub.1-3 linear or branched alkylene group.

A new class of compounds known as chalcogenosilacyclopentanes is described. These compounds are five-membered ring structures containing a silicon-selenium or silicon-tellurium bond, as shown in Formulas (I) and (II). In these compounds, the substituents on the silicon and on the ring carbons may be hydrogen, alkyl, alkoxy, aromatic, or ether groups. The chalcogenosilacyclopentane compounds undergo ring-opening reactions with hydroxyl and other protic functionalities and may be used to prepare substrates that are amenable to thin film deposition techniques such as ALD and CVD. ##STR00001##

Provided herein is a composition for treating aluminum containing surfaces, wherein the composition includes a reaction product of at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and at least one fatty acid, wherein the molar ratio of the amino group/s of the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and of the at least one fatty acid is 1.2:1 to 1:2, and wherein the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof is linked to the at least one fatty acid by at least one carboxylic acid/amine salt bond and/or at least one amide bond.

Provided herein is a composition for treating aluminum containing surfaces, wherein the composition includes a reaction product of at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and at least one fatty acid, wherein the molar ratio of the amino group/s of the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and of the at least one fatty acid is 1.2:1 to 1:2, and wherein the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof is linked to the at least one fatty acid by at least one carboxylic acid/amine salt bond and/or at least one amide bond.