The present invention provides, among other things, compounds that include a water-soluble and non-peptidic polymer as well as a maleimidyl group. The compounds are useful as, among other things, polymeric reagents.

The present invention provides: a fluorinated ether compound and a coating liquid capable of forming a surface layer excellent in water/oil repellency, abrasion resistance, fingerprint stain removability and lubricity and an article having a surface layer excellent in water/oil repellency, abrasion resistance, fingerprint stain removability and lubricity. Provided is a fluorinated ether compound represented by [R.sup.f-G-].sub.aZ[-(OR.sup.2).sub.cSiR.sup.3.sub.nL.sub.3-n].sub.b wherein R.sup.f: a linear polyfluoroalkyl group having at least two carbon atoms, which has at least one etheric oxygen between carbon-carbon atoms, G: R.sup.1O, R.sup.1CONH, CONH or a single bond, R.sup.1: an alkylene group, Z: a hydrocarbon group having a valence of (a+b) or the like, R.sup.2: an alkylene group, R.sup.3: a monovalent hydrocarbon group or the like, L: a hydrolyzable group, n: from 0 to 2, a: an integer of at least 1, b: an integer of at least 1, (a+b): at least 3, when a is 1, b is at least 4, and when a is at least 2, b is at least 1, and c: 0 or 1.

The present invention provides: a fluorinated ether compound and a coating liquid capable of forming a surface layer excellent in water/oil repellency, abrasion resistance, fingerprint stain removability and lubricity and an article having a surface layer excellent in water/oil repellency, abrasion resistance, fingerprint stain removability and lubricity. Provided is a fluorinated ether compound represented by [R.sup.f-G-].sub.aZ[-(OR.sup.2).sub.cSiR.sup.3.sub.nL.sub.3-n].sub.b wherein R.sup.f: a linear polyfluoroalkyl group having at least two carbon atoms, which has at least one etheric oxygen between carbon-carbon atoms, G: R.sup.1O, R.sup.1CONH, CONH or a single bond, R.sup.1: an alkylene group, Z: a hydrocarbon group having a valence of (a+b) or the like, R.sup.2: an alkylene group, R.sup.3: a monovalent hydrocarbon group or the like, L: a hydrolyzable group, n: from 0 to 2, a: an integer of at least 1, b: an integer of at least 1, (a+b): at least 3, when a is 1, b is at least 4, and when a is at least 2, b is at least 1, and c: 0 or 1.

The present invention provides, among other things, compounds that include a water-soluble and non-peptidic polymer as well as a maleimidyl group. The compounds are useful as, among other things, polymeric reagents.

The present invention provides, among other things, compounds that include a water-soluble and non-peptidic polymer as well as a maleimidyl group. The compounds are useful as, among other things, polymeric reagents.

The present invention provides, among other things, compounds that include a water-soluble and non-peptidic polymer as well as a maleimidyl group. The compounds are useful as, among other things, polymeric reagents.

An intermediate transfer member that includes a hydroxyl terminated poly(oxetane) based fluorinated polyether optionally crosslinked with an aminoplast resin.

Provided herein are styrenic fluoropolymers comprising the formula:

##STR00001##

Also provided are methods for making the styrenic fluoropolymers and using them as anion exchange resin to at least partially separate perfluoro alkyl and polyfluoro alkyl substances (PFAS) from mixtures.

Provided herein are styrenic fluoropolymers comprising the formula:

##STR00001##

Also provided are methods for making the styrenic fluoropolymers and using them as anion exchange resin to at least partially separate perfluoro alkyl and polyfluoro alkyl substances (PFAS) from mixtures.

A process for preparing a low-molecular weight fluoropolyether containing an acid fluoride by decomposing a triflate or trifluoroacetate of a fluoropolyether having a hydroxyl group in the presence of a Lewis acid.