专利号:US-2023212107-A1 优先权日:2021-12-30 标 题:Synthesis of para-alkylated syringyl (meth)acrylate derivatives and photopolymerizable compositions for additive manufacturing in dental applications 发明人:CHOUDHARY UMESH UPENDRA; SU JESSICA KALAY 权利人:ALIGN TECHNOLOGY INC 摘要:The present disclosure provides polymerizable monomers which may be used as reactive diluents in additive manufacturing. The polymerizable monomers may have low vapor pressures and may be compatible with a range of low glass transition temperature oligomers.
专利号:US-2012267111-A1 优先权日:2009-12-30 标题 :Synthesis of Degradable Polymers Downhole for Oilfield Applications 发明人:KHLESTKIN VADIM KAMIL EVICH 权利人:KHLESTKIN VADIM KAMIL EVICH 摘要:A method is given for polymerizing monomers downhole to create well treatment polymers. The monomers each contain two polymerizable groups and a degradable group or groups which allow the polymer to degrade under downhole conditions, for example by hydrolysis. Polymerization downhole allows easier, more precise, placement of polymer. Polymer obtained from monomers pumped downhole may be used, for example, for fluid diversion plugs, isolation plugs, formation consolidation, flowback control, and fluid loss control. Synthesized polymer may form gels, films, solids or other structure in treated wellbores, fractures, and/or formations. After the desired effect is achieved, the deposited polymer degrades and the polymer degradation products dissolve, leaving the wellbore, fracture and/or formation clean, with no damage that might have decreased fluid flow.
专利号:US-2009018266-A1 优先权日:2005-11-10 标题 :Preparation of hydrophilic nanoparticles by copolymerization of mono and divinyl monomers in micellar solution 发明人:BORBELY JANOS; HARTMANN JOHN F 权利人:BORBELY JANOS; HARTMANN JOHN F 摘要:The present invention relates to the preparation of hydrophilic nanoparticles and in particular hydrophilic nanoparticles that are biocompatible. Free radical monovinyl-divinyl monomer copolymerization/cross-linking reactions of water-soluble, monovinyl N-vinyl-2-pyrrolidone (NVP) with a bi-unsaturated divinyl, comonomer (poly{ethylene glycol}dimethacrylate) (PEGDMA), has been found to yield hydrophilic nanoparticles (NPs). These nanoparticles are built from three-dimensional nanopolymer networks. In the polymers' synthesis the composition of the monomers, and the total monomer concentration were varied. The characteristics of copolymers were determined by nuclear magnetic resonance spectroscopy (NMR), Fourier transform infrared (FTIR) and elemental analysis. Particle size and morphology of nanoparticles were confirmed by dynamic light scattering (DLS), transmission electron microscope (TEM) and scanning electron microscope (SEM) methods. In the present invention hydrophilic polymers can be used in micellar polymerization to create hydrophilic nanoparticles.
专利号:WO-2023130042-A1 优先权日:2021-12-30 标题:Synthesis of para-alkylated syringyl (meth)acrylate derivatives and photopolymerizable compositions for additive manufacturing in dental applications
专利号:US-12157788-B1 优先权日:2019-07-05 标 题:Phosphonic hydrogel synthesis method 发明人:BOZKURT AYHAN; ANIL SEYDA T GUNDAY; ANIL ISMAIL 权利人:UNIV IMAM ABDULRAHMAN BIN FAISAL 摘要:Cross-linked polyvinyl polymers comprising charged groups and methods of making are disclosed. The polymers are effective and durable adsorbent of dyes from aqueous solutions. Also, a method of removal of dyes from contaminated water is disclosed.
专利号:WO-2011081547-A1 优先权日:2009-12-30 标题 :Synthesis of degradable polymers downhole for oilfield applications