A positive resist composition comprising a base polymer comprising recurring units having a carboxyl group whose hydrogen is substituted by a pyridine ring-containing tertiary hydrocarbyl group.

A positive resist composition comprising a base polymer comprising recurring units having a carboxyl group whose hydrogen is substituted by a pyridine ring-containing tertiary hydrocarbyl group.

A method and compounds for enhanced oil recovery (EOR) including flooding of a mixture of water and one or more of the compounds in a geological formation. The compounds have a fluoroalkyl group.

The present disclosure provides a styrene derivative and a preparation method thereof, and a modified organic silicone resin and a preparation method and use thereof, and belongs to the technical field of back coating solutions. The styrene derivative is specifically 2,3-difluoro-4-methoxystyrene. A fluorine atom is introduced into a benzene ring structure, and the obtained styrene derivative contains a C—F bond with a relatively high chemical bond energy, such that the styrene derivative has a relatively high thermal stability. The styrene derivative can be introduced into an organic silicone resin to make the obtained modified organic silicone resin have a higher thermal stability. The modified organic silicone resin can be used as a back coating solution to effectively improve a heat resistance of barcode thermal transfer ribbons.

The present disclosure provides a styrene derivative and a preparation method thereof, and a modified organic silicone resin and a preparation method and use thereof, and belongs to the technical field of back coating solutions. The styrene derivative is specifically 2,3-difluoro-4-methoxystyrene. A fluorine atom is introduced into a benzene ring structure, and the obtained styrene derivative contains a C—F bond with a relatively high chemical bond energy, such that the styrene derivative has a relatively high thermal stability. The styrene derivative can be introduced into an organic silicone resin to make the obtained modified organic silicone resin have a higher thermal stability. The modified organic silicone resin can be used as a back coating solution to effectively improve a heat resistance of barcode thermal transfer ribbons.

The present invention relates to new anion exchange polymers and (blend) membranes made from polymers containing highly fluorinated aromatic groups by means of nucleophilic substitution and processes for their production by means of nucleophilic aromatic substitution and their areas of application in membrane processes, in particular in electrochemical membrane processes such as fuel cells, electrolysis and redox flow batteries.

The present invention relates to new anion exchange polymers and (blend) membranes made from polymers containing highly fluorinated aromatic groups by means of nucleophilic substitution and processes for their production by means of nucleophilic aromatic substitution and their areas of application in membrane processes, in particular in electrochemical membrane processes such as fuel cells, electrolysis and redox flow batteries.

A fluorocarboxylic acid-containing polymer comprising recurring units having formula (A1), but not acid labile group-containing recurring units is provided. A resist composition comprising the same offers a high sensitivity and is unsusceptible to nano-bridging or pattern collapse independent of whether it is of positive or negative tone. ##STR00001##

A fluorocarboxylic acid-containing polymer comprising recurring units having formula (A1), but not acid labile group-containing recurring units is provided. A resist composition comprising the same offers a high sensitivity and is unsusceptible to nano-bridging or pattern collapse independent of whether it is of positive or negative tone. ##STR00001##

The object of the invention is to provide a novel olefin-based molded product useful for various applications. An olefin-based molded product comprising a polymer including a structural unit of at least one polar olefin monomer represented by the general formula (I) CH.sub.2═CH—R.sup.2—Z(R.sup.1).sub.n is provided. In the formula, Z is a hetero atom selected from the group consisting of nitrogen, oxygen, phosphorus, sulfur, and selenium; R.sup.1 is a substituted or unsubstituted hydrocarbyl group having 1 to 30 carbon atoms; n is an integer of 1 or 2 depending on the atomic species of Z; and R.sup.2 is a substituted or unsubstituted hydrocarbylene group having 2 to 20 carbon atoms.