The present disclosure provides a process. In an embodiment, the process includes introducing an antifoulant into an ethylene feed of a reactor system. The reactor system includes the ethylene feed, a hyper-compressor, a preheater and a polymerization reactor. The ethylene feed is located upstream of the hyper-compressor. The antifoulant consists of an inhibitor, molecular oxygen, and optionally a solvent. As the ethylene feed is located upstream of the hyper-compressor, the process includes introducing the antifoulant into the ethylene feed upstream of the hyper-compressor. The process further includes adding a free radical initiator to the polymerization reactor. The process further includes polymerizing the ethylene in the polymerization reactor under high pressure free-radical polymerization conditions, and forming an ethylene-based polymer.

The present disclosure provides a process. In an embodiment, the process includes introducing an antifoulant into an ethylene feed of a reactor system. The reactor system includes the ethylene feed, a hyper-compressor, a preheater and a polymerization reactor. The ethylene feed is located upstream of the hyper-compressor. The antifoulant consists of an inhibitor, molecular oxygen, and optionally a solvent. As the ethylene feed is located upstream of the hyper-compressor, the process includes introducing the antifoulant into the ethylene feed upstream of the hyper-compressor. The process further includes adding a free radical initiator to the polymerization reactor. The process further includes polymerizing the ethylene in the polymerization reactor under high pressure free-radical polymerization conditions, and forming an ethylene-based polymer.

The present invention pertains to: a fluororesin that includes a residue unit represented by formula (1), and a terminal group represented by formula (2); and a fluororesin that includes a residue unit represented by formula (1) and has a transmittance of 50% or more measured at an optical path length of 10 mm and a wavelength of 275 nm when dissolved in perfluorohexane to produce a 10 wt % perfluorohexane solution.

##STR00001##

In formula (1): Rf.sub.1, Rf.sub.2, Rf.sub.3, and Rf.sub.4 each independently represent one selected from the group consisting of fluorine atoms, C1-7 linear perfluoroalkyl groups, C3-7 branched perfluoroalkyl groups, or C3-7 cyclic perfluoroalkyl groups; the perfluoroalkyl groups may have an etheric oxygen atom; Rf.sub.1, Rf.sub.2, Rf.sub.3, and Rf.sub.4 may bond to each other to form a ring having 4 to 8 carbon atoms; and the ring may include an etheric oxygen atom.

##STR00002##

In formula (2), i is an integer of 3-20. The present invention provides: a fluororesin that includes an oxolane ring, has suppressed yellowing after heating and melting, and especially has reduced discoloration, even in molding of thick products; and a method for producing said fluororesin.

The present disclosure provides a pH-sensitive membranolytic polymer material and a preparation method and application thereof. The pH-sensitive membranolytic polymer material has the structure shown in Formula (I). At normal physiological pH, the polymer material is hydrophobic neutral, and can be self-assembled into PEG coated nanoparticles with weak interaction with cell membrane; when the pH decreases, the polymer material can be protonated to form an amphiphilic structure consisting of hydrophobic domain and cationic domain, which has strong interaction with the cell membrane and strong membranolytic activity, so the polymer material can kill tumor cells or bacteria efficiently and selectively.

##STR00001##

The invention relates to a process for the radical polymerization for preparing a copolymer, using specific monomers A, which have a glass transition temperature Tg of at least 0° and specific monomers B, which contain an aromatic heterocyclic group that contain at least one nitrogen atom in the ring. The invention also relates to copolymers that are obtained by the radical polymerization, to the use of same as accelerators in a curing reagent for adhesive compounds, and to adhesive strips containing same.

The invention relates to a process for the radical polymerization for preparing a copolymer, using specific monomers A, which have a glass transition temperature Tg of at least 0° and specific monomers B, which contain an aromatic heterocyclic group that contain at least one nitrogen atom in the ring. The invention also relates to copolymers that are obtained by the radical polymerization, to the use of same as accelerators in a curing reagent for adhesive compounds, and to adhesive strips containing same.

An oligomer represented by the formula

##STR00001##

where R.sup.1 is hydrogen or methyl, R.sup.2 is an alkyl group having from 2 to 18 carbons, inclusive, R.sup.3 is hydrogen or hydroxyl, Y is hydrogen or an initiator residue, Z is a single bond or methylene, and n is an integer from 9 to 40, inclusive. Acrylate oligomer emulsions including the disclosed oligomer and fluorine-free treating compositions including the acrylate oligomer emulsion. Methods of making and using such compositions are also disclosed.

An oligomer represented by the formula

##STR00001##

where R.sup.1 is hydrogen or methyl, R.sup.2 is an alkyl group having from 2 to 18 carbons, inclusive, R.sup.3 is hydrogen or hydroxyl, Y is hydrogen or an initiator residue, Z is a single bond or methylene, and n is an integer from 9 to 40, inclusive. Acrylate oligomer emulsions including the disclosed oligomer and fluorine-free treating compositions including the acrylate oligomer emulsion. Methods of making and using such compositions are also disclosed.

The invention provides a living radical polymerization method using a zinc phthalocyanine dye as a near-infrared photocatalyst, including subjecting a free radical polymerizable monomer to a near-infrared light-controlled polymerization reaction, in the presence of a chain transfer agent, a cocatalyst and a zinc phthalocyanine dye containing a carbon-carbon double bond, in a solvent at 0-30° C. under the air atmosphere, to obtain a living radical polymerization product. The free radical polymerizable monomer is an acrylate monomer, a methacrylate monomer, an acrylamide monomer or a methacrylamide monomer; the chain transfer agent includes a thiocarbonate; and the cocatalyst includes an organic amine with or without a carbon-carbon double bond. A near-infrared light-responsive functional zinc phthalocyanine dye is used as a near-infrared photocatalyst for the polymerization reaction, and after the polymerization is completed, the polymerizable zinc phthalocyanine dye remains on the polymer chain by polymerization, thereby realizing the cyclic utilization of the near-infrared photocatalyst.

The invention provides a living radical polymerization method using a zinc phthalocyanine dye as a near-infrared photocatalyst, including subjecting a free radical polymerizable monomer to a near-infrared light-controlled polymerization reaction, in the presence of a chain transfer agent, a cocatalyst and a zinc phthalocyanine dye containing a carbon-carbon double bond, in a solvent at 0-30° C. under the air atmosphere, to obtain a living radical polymerization product. The free radical polymerizable monomer is an acrylate monomer, a methacrylate monomer, an acrylamide monomer or a methacrylamide monomer; the chain transfer agent includes a thiocarbonate; and the cocatalyst includes an organic amine with or without a carbon-carbon double bond. A near-infrared light-responsive functional zinc phthalocyanine dye is used as a near-infrared photocatalyst for the polymerization reaction, and after the polymerization is completed, the polymerizable zinc phthalocyanine dye remains on the polymer chain by polymerization, thereby realizing the cyclic utilization of the near-infrared photocatalyst.