摘要:
Water soluble macromers are modified by addition of free radical polymerizable groups, such as those containing a carbon-carbon double or triple bond, which can be polymerized under mild conditions to encapsulate tissues, cells, or biologically active materials. The polymeric materials are particularly useful as tissue adhesives, coatings for tissue lumens including blood vessels, coatings for cells such as islets of Langerhans, coatings, plugs, supports or substrates for contact with biological materials such as the body, and as drug delivery devices for biologically active molecules.
摘要:
An object of the present invention is to provide a paint composition for in-mold coating of thermoplastic plastic substrates, the paint film resultant from which composition neither peels off nor becomes turbid even if the mold is opened in a state where its temperature is high, needless to say that the resultant paint film has excellent adhesion to nonpolar thermoplastic plastic substrates and adequate flowability. As a means of achieving this object, a paint composition according to the present invention for in-mold coating of thermoplastic plastic substrates comprises: an acryl-modified unsaturated dicarboxylic acid (anhydride)-grafted polyolefin (A); at least one member (B) selected from the group consisting of reactive oligomers and reactive monomers; and a radical polymerization initiator (C); in a specific formulation ratio, with the paint composition being characterized in that: the acryl-modified unsaturated dicarboxylic acid (anhydride)-grafted polyolefin (A) is in the range of 92 to 112° C. in melting point and in the range of 5 to 15 mass % in ratio for which unsaturated dicarboxylic acid (anhydride)-derived structural units account in its structure.
摘要:
An anaerobic adhesive composition having enhanced toughness and resistance to crack propagation, particularly subsequent to thermal exposure, comprising a combination of three monomers consisting of (a) at least one (meth) acrylate monomer, (b) at least one (meth)acrylate-terminated urethane modified acrylonitrile/butadiene prepolymer, and (c) at least one (meth)acrylate-terminated acrylic/polyisocyanate adduct.
摘要:
Water soluble macromers are modified by addition of free radical polymerizable groups, such as those containing a carbon-carbon double or triple bond, which can be polymerized under mild conditions to encapsulate tissues, cells, or biologically active materials. The polymeric materials are particularly useful as tissue adhesives, coatings for tissue lumens including blood vessels, coatings for cells such as islets of Langerhans, and coatings, plugs, supports or substrates for contact with biological materials such as the body, and as drug delivery devices for biologically active molecules. A medical condition can be treated by applying to a site a polymerization initiator, then applying a substantially water-soluble, degradable macromer of at least 200 mw and having at least two crosslinkable substituents, and polymerizing the macromer to form a polymeric material that can adhere two surfaces together, be an immunoisolation barrier, prevent adhesion of the site to another surface, or contain a biologically active material for delivery or to provide the polymeric material with resistance to bacterial growth or a decrease in inflammatory response. A biocompatible substrate can be coated by applying a mixture of the macromer of at least 400 mw and an initiator and polymerizing. The initiator may be applied to the substrate before the macromer.
摘要:
Water soluble macromers are modified by addition of free radical polymerizable groups, such as those containing a carbon-carbon double or triple bond, which can be polymerized under mild conditions to encapsulate tissues, cells, or biologically active materials. The polymeric materials are particularly useful as tissue adhesives, coatings for tissue lumens including blood vessels, coatings for cells such as islets of Langerhans, and coatings, plugs, supports or substrates for contact with biological materials such as the body, and as drug delivery devices for biologically active molecules. A medical condition at a localized site is treated by applying a polymerization initiator and then applying a substantially water-soluble, degradable macromer of at least 200 mw and having at least two crosslinkable substituents, and polymerizing the macromer to form a crosslinked polymeric material at the site. The crosslinked polymeric material may adhere two surfaces together, or be a barrier that provides immunoisolation or prevents adhesion of the site to another surface such as post-surgical adhesion. A biologically active material may be present when the macromer is polymerized to provide for delivery of the biologically active material, or to provide the polymeric material with a desired property such as resistance to bacterial growth or a decrease in inflammatory response.
摘要:
A UV-curable acrylate-thiol-ene insulating coating composition for electrical conductors, a method of manufacturing a UV-curable acrylate-thiol-ene insulating coating composition for electrical conductors. The insulating coating being of about 2.5 nullm to about 500 nullm thickness, which cured coating has a dielectric dissipation factor (60Hz, 24null C.) of lower than about 0.05.
摘要:
A RADIATION-CURABLE PAINT BINDER DISPERSION COMPRISES VINYL MONOMERS, AN ALPHA-BETA OLEFINICALLY UNSATURATED EPOXY RESIN HAVING MOLECULAR WEIGHT IN EXCESS OF ABOUT 370, AND AN ADDITION PRODUCT OF A HYDROXY-FUNCTIONAL GRADED RUBBER PARTICLE, A DIISOCYANATE AND A HYDROXYALKYL ACRYLATE. THE DISPERSION IS APPLIED TO SUBSTRATES AND CURED THEREON BY EXPOSURE TO IONIZING RADIATION, E.G., AN ELECTRON BEAM.
摘要:
A RADIATION-CURABLE PAINT WHICH ON A PIGMENT AND PARTICULATE FILLER-FREE BASIS CONSISTS ESSENTIALLY OF VINYL MONOMERS AND A UNIQUE, ALPHA-BETA OLEFINICALLY UNSATURATED, RUBBER-COMPRISING RESIN FORMED BY A REACTING A MONOEPOXY COPOLYMER OF VINYL MONOMERS WITH A CARBOXY-FUNCTIONAL GRADED-RUBBER PARTICLE AND REACTING THE RESULTANT HYDROXYL GROUPS THEREON WITH ACRYLYL CHLORIDE OR METHACRYLYL CHLORIDE.
摘要:
A novel bio-based superabsorbent polymer material based on a proteinaceous natural polymer is introduced herein. There is further disclosed a method for the manufacture of such a bio-based crosslinked superabsorbent polymer material. The method includes, but not limited to, introducing polymerizable unsaturated groups onto the natural polymer or its derivative so as to yield a macromonomer. The macromonomer can be formed by covalently binding unsaturated carbon-carbon double bonds to a proteinaceous substrate through a reaction of a selected chemical compound and the amino group on the proteinaceous substrate. The macromonomer is then copolymerized with unsaturated co-monomer(s) to form a crosslinked superabsorbent material.