摘要:
Provided are an anticoagulation and anticalcification biological material and a preparation method therefor. The preparation method includes the following steps: introducing, on a biological tissue, a polymerizable reactive group, and undergoing free radical copolymerization with a zwitterion. In the present invention, by introducing a reactive group capable of free radical polymerization to a biological tissue and undergoing free radical copolymerization with a zwitterionic monomer, collagen in the biological tissue is crosslinked at multiple sites by means of a polymer, thereby achieving sufficient crosslinking within and between collagen fibers, improving the stability of the biological tissue, and prolonging the service life of the biological tissue. Moreover, a zwitterion is introduced to the surface of the biological tissue, to improve the anticoagulation performance, promote the in-situ endothelialization of a biological valve, and prevent the calcium element deposition.
摘要:
The present invention relates to a curable petroleum resin, a preparation method therefor, and use thereof, wherein the curable petroleum resin comprises a repeating unit derived from a petroleum resin monomer, a repeating unit derived from a silane monomer and a repeating unit derived from a cyclic anhydride monomer, and wherein the curable petroleum resin is used as an additive for a reactive polyolefin-based adhesive composition to increase the adhesive strength to a polyolefin-based substrate used for various parts.
摘要:
A wax-polymer compound includes (a) a polymer component that is a polymerized unsaturated monomer, optionally copolymerized with a vinyl-aromatic monomer, and (b) a halogenated hydrocarbon wax component. The polymer component is grafted to the halogenated hydrocarbon wax component, and the wax-polymer compound has a number average molecular weight of about 1,000 to about 100,000, A method of making the wax-polymer compound and a coated silica particle are also disclosed. A rubber composition includes a rubber elastomer comprising a polymerized unsaturated monomer and optionally a polymerized vinyl-aromatic monomer, the elastomer having a number average molecular weight of about 100,000 to about 1,000,000. It further includes a filler in an amount of about 5 to about 200 phr, the filler comprising carbon black, silica, or both; and a wax-polymer additive.
摘要:
La présente invention concerne un copolymère dont le squelette est obtenu par polymérisation radicalaire d'un corps gras (A) comprenant des insaturations et/ou des fonctions hydroxyles et d'au moins un monomère (B) comprenant au moins une fonction polymérisable par polymérisation radicalaire et comprenant soit au moins une chaîne alkyle, linéaire ou ramifiée, avec ladite chaine alkyle comprenant de préférence de 16 à 44 atomes de carbone, plus préférentiellement au moins 18 atomes de carbones, par exemple au moins 20 atomes de carbone, notamment 22 atomes de carbone ou 44 atomes de carbone, soit une fonction réactive. L'invention concerne également un procédé de modification des propriétés rhéologiques d'un milieu non aqueux par addition d'un copolymère selon l'invention. La présente invention concerne également une composition constituée en tout ou en partie d'un copolymère selon l'invention. De préférence la composition est une composition émulsifiable. L'invention concerne également une composition comprenant un copolymère selon l'invention et un agent émulsifiant.
摘要:
This invention provides a method of manufacturing a curable petroleum resin and a curable petroleum resin obtained therefrom. The method includes (a) a process of thermally polymerizing a composition for polymerization which includes silanes and monomers, including cyclic olefins having at least one ethylenically unsaturated group selected from among C5 fractions, C9 fractions, and dicyclopentadiene of naphtha cracking, thereby enabling petroleum resins, which are thermoplastic resins, to be applied as reactive adhesives, and ultimately being capable of providing eco-friendly reactive adhesives.
摘要:
Process for the manufacturing of graft polymers of polysaccharides or polypeptides or its respective derivatives, obtainable by free radical induced co-polymerization of A) a monomer selected from or a monomer mixture of (a) from 20 to 100% by weight of acrylic acid or methacrylic acid or of a mixture thereof or of the alkali metal, alkaline earth metal or ammonium salts thereof, (b) from 0 to 80% by weight of other monoethylenically unsaturated monomers which are copolymerizable with the monomers (a) and (c) from 0 to 5% by weight of monomers having at least 2 ethylenically unsaturated, nonconjugated double bonds in the molecule,
in the presence of either B1) polysaccharides, oxidatively, hydrolytically or enzymatically degraded polysaccharides, oxidized hydrolytically degraded or oxidized enzymatically degraded polysaccharides, or such chemically modified degraded products, chemically modified mono-, oligo- or polysaccharides or mixtures of the stated compounds or B2) polypeptides, hydrolytically or enzymatically degraded and optionally chemically modified polypeptides or mixtures of the stated compounds in a weight ratio A:(B1 or B2) of from 1:99 to 18:82, wherein the components of the monomers of A) are added to B1) or B2) in an inert solvent at a temperature of 40 to 150 °C in the presence of a free radical-forming initiator, characterized in that at least 50% of the radical-forming initiator are with the component B1) or B2) before the addition of the monomers A) and the rest is added together with the monomers of A).
摘要:
The present invention relates generally to radiation-curable ink formulations, and particularly, but not by way of limitation, to a family of radiation-curable ink formulations specifically for lithographic printing applications. The inventive ink formulations are based on multifunctional acrylate resins formed by the reaction of acrylate monomers and oligomers with beta-keto esters (e.g., acetoacetates), beta-diketones (e.g., 2,4-pentanedione), beta-keto amides (e.g., acetoacetanilide, acetoacetamide), and/or other beta-dicarbonyl compounds that can participate in Michael addition reactions.