Abstract:
본 발명은, 그래핀의 구조적 특징과 기계적 물성을 그대로 유지하면서, 그래핀 표면에 고분자를 도입하여 유기 용매에 대한 우수한 분산성을 구현할 수 있는 고분자-그래핀 복합체 및 그 제조방법, 그리고 이를 이용한 고분자-그래핀 복합체 조성물에 관한 것이다.
Abstract:
Novel stress-reducing crosslinking oligomers that have application in dental restoratives, thin films, hardcoats, composites, adhesives, and other uses subject to stress reduction are described. The addition-fragmentation process of crosslinking results in a chain-transfer event that provides novel polymers that may be further functionalized. In addition, the addition-fragmentation oligomer comprises pendent functional groups that bond to a substrate by forming an ionic or covalent bond, or etch the substrate by chemically removing some material from the substrate.
Abstract:
Disclosed herein is a composition comprising a substrate with functionalized surface covalently bound to an anti-infective agent, such as a quaternary phosphonium compound with anti-bacterial activity against a broad range of bacteria, methods of synthesizing an anti-infective composition, and its resultant antimicrobial performance.
Abstract:
The problem addressed by the present invention is to provide a novel separating agent for hydrophilic interaction chromatography useful in separating hydrophilic compounds. The hydrophilic interaction chromatography separating agent, which is formed from a carrier and a ligand carried by the carrier, is a separating agent wherein the ligand is a (meth)acrylic polymer having a constituent unit derived from the compound indicated by formula (I). (In formula (I): there are one or two double bonds between atoms configuring a heterocycle; X1 is selected from the group consisting of S, SCH3 +, O, NH, NCH3, CH2, CHR, and CR1R2; and X2, X3, and X4 are each selected from the group consisting of N, NH, NCH3, CH2, CHR, NCH3 +, CH, CR, and CR1R2. R1 and R2 are each a substituted or unsubstituted alkyl having 1-18 carbon atoms, an aryl having 6-18 carbon atoms, an alkenyl having 2-18 carbon atoms, an alkynyl having 2-18 carbon atoms, an aralkyl having 7-18 carbon atoms, an acyl having 2-18 carbon atoms, a cycloalkyl having 3-18 carbon atoms, a carboxyl, an amino, an aryloxy having 6-18 carbon atoms, an alkoxy having 1-18 carbon atoms, a halo, a hydroxy, a nitro, or a cyano. R is a substituted or unsubstituted alkyl having 1-18 carbon atoms, an aryl having 6-18 carbon atoms, an alkenyl having 2-18 carbon atoms, an alkynyl having 2-18 carbon atoms, an aralkyl having 7-18 carbon atoms, an acyl having 2-18 carbon atoms, a cycloalkyl having 3-18 carbon atoms, a carboxyl, an amino, an aryloxy having 6-18 carbon atoms, an alkoxy having 1-18 carbon atoms, a halo, a hydroxy, a nitro, or a cyano. At least two of X1, X2, X3, and X4 are not CH2, CH, CR, or CR1R2, and R3 is H or CH3.)
Abstract:
The invention relates to a hardenable multi-part liquid acrylic composition. The composition comprises a storage stable liquid first part, a storage stable liquid second part and optionally, a third or further liquid parts. The parts are operable to form a cement which hardens to a solid upon mixing of the parts together. The composition comprises an acrylic monomer component, an initiator component,acrylic polymer particles and a radiopacifying filler. The initiator component is present in an amount effective topolymerize the acrylic monomer component upon being mixed and/or activated therewith. At least some of the radiopacifying filler is encapsulated within and/or adsorbed on the acrylic polymer particles in a liquid part. The invention extends to an at least twin barreled syringe or caulking gun accommodating the multi-part composition, a method of producing the multi-part composition, a composition for use as bone cement composition or in dental repairs, a liquid composition comprising a first sub-population of emulsion or non-emulsion polymerized acrylic polymer particles and radiopacifying filler encapsulated and/or adsorbed in the first sub-population of acrylic polymer particles and bone cement compositions or dental compositions.
Abstract:
Articles and methods comprising persistent carbenes are provided, as well as related compositions. In some embodiments, a persistent carbene may be associated with a portion of a substrate (e.g., at least a portion of a surface on the substrate). In certain embodiments, the association of persistent carbene with the substrate may be used to affect certain properties of substrate (e.g., surface chemistry, stability). In some cases, a persistent carbene may be functionalized after association with a portion of a substrate. In some embodiments, a persistent carbene and at least one secondary compound may be associated with a portion of a substrate. Articles and methods of the present invention may be useful for applications involving electronics, sensing, microfabrication, nanotechnology, biomimetic, and drug delivery, amongst others.
Abstract:
Articles and methods comprising persistent carbenes are provided, as well as related compositions. In some embodiments, a persistent carbene may be associated with a portion of a substrate (e.g., at least a portion of a surface on the substrate). In certain embodiments, the association of persistent carbene with the substrate may be used to affect certain properties of substrate (e.g., surface chemistry, stability). In some cases, a persistent carbene may be functionalized after association with a portion of a substrate. In some embodiments, a persistent carbene and at least one secondary compound may be associated with a portion of a substrate. Articles and methods of the present invention may be useful for applications involving electronics, sensing, microfabrication, nanotechnology, biomimetic, and drug delivery, amongst others.