摘要:
A method for producing methyldichlorophosphane, the method including: allowing methane and phosphorus trichloride to react in the presence of an additive using a metal compound, or a metal compound carried on a carrier, or both thereof.
摘要:
A flame-retardant vanillin-derived molecule, a process for forming a flame-retardant resin, and an article of manufacture comprising a material that contains the flame-retardant vanillin-derived molecule are disclosed. The flame-retardant vanillin-derived molecule can be synthesized from vanillin obtained from a bio-based source, and can have at least one phosphoryl or phosphonyl moiety with phenyl, allyl, epoxide, propylene carbonate, or thioether substituents. The process for forming the flame-retardant resin can include reacting a vanillin derivative and a flame-retardant phosphorus-based molecule to form the flame-retardant vanillin-derived molecule, and binding the flame-retardant vanillin-derived molecule to a resin. The flame-retardant vanillin-derived molecules can also be bound to polymers. The material in the article of manufacture can be flame-retardant, and contain the flame-retardant vanillin-derived molecules. Examples of materials that can be in the article of manufacture can include resins, plastics, adhesives, polymers, etc.
摘要:
New ampholyte biomaterial compounds containing ampholyte moieties are synthesized and integrated into polymeric assemblies to provide hydrophilic polymers exhibiting improved biocompatibility, haemocompatibility, hydrophilicity non-thrombogenicity, anti-bacterial ability, and mechanical strength, as well as suitability as a drug delivery platform.
摘要:
New ampholyte biomaterial compounds containing ampholyte moieties are synthesized and integrated into polymeric assemblies to provide hydrophilic polymers exhibiting improved biocompatibility, haemocompatibility, hydrophilicity non-thrombogenicity, anti-bacterial ability, and mechanical strength, as well as suitability as a drug delivery platform.
摘要:
A universal linker structure is provided, in which a functional group and activating leaving group are placed on a tether, allowing the placement of an electrophile at the end of any nucleic acid sequence. The electrophile on the tether can react with a second nucleic acid carrying a nucleophile when the two nucleic acids are hybridized near one another, resulting in release of the leaving group, and creation of a functional change. The linker can be designed to destabilize the ligation product without slowing the rate of reaction. This lowers product inhibition, and the target DNA or RNA can become a catalyst for isothermally generating multiple signals for detection. This enhanced signal is demonstrated in solution experiments and in solid supported assays. The universal linkers of the present invention are simple and inexpensive to prepare, and can be appended to any polynucleotide in automated steps on a standard DNA synthesizer.
摘要:
A universal linker structure is provided, in which a functional group and activating leaving group are placed on a tether, allowing the placement of an electrophile at the end of any nucleic acid sequence. The electrophile on the tether can react with a second nucleic acid carrying a nucleophile when the two nucleic acids are hybridized near one another, resulting in release of the leaving group, and creation of a functional change. The linker can be designed to destabilize the ligation product without slowing the rate of reaction. This lowers product inhibition, and the target DNA or RNA can become a catalyst for isothermally generating multiple signals for detection. This enhanced signal is demonstrated in solution experiments and in solid supported assays. The universal linkers of the present invention are simple and inexpensive to prepare, and can be appended to any polynucleotide in automated steps on a standard DNA synthesizer.
摘要:
An evaporator system adapted for emitting insect killing vapors of an insecticide therefrom and comprising a liquid or solid composition enclosed therein, said insecticide consisting in at least one volatile phosphoric acid ester which is stabilized by at least one diazene compound.
摘要:
By reacting a mxiture of pentaerythritol and dipentaerythritol with a trihydrocarbyl or trihalohydrocarbyl phosphite, preferably triphenyl phosphite there is obtained pentaerythritoldipentaerythritol phosphite as a relatively low melting solid. In contrast to the use of only pentaerythritol or dipentaerythritol the product can be readily worked as a liquid above 110*C., e.g., 150*-160*C. Furthermore, the performance and physical properties of this product are not the same as that of an equal molar mixture of pure pentaerythritol phosphite and dipentaerythritol phosphite.
摘要:
HALOGEN-CONTAINING ESTERS OF PHOSPHORUS ACIDS ARE PREPARED BY AN IMPROVED PROCESS WHEREBY THIOL- OR HYDROXYLCONTAINING ORGANIC MATERIALS AND PHOSPHORUS HALIDES ARE REACTED AT SPECIFIED TEMPERATURES IN THE PRESENCE OF A DISTILLATION RESIDUE, PRODUCED BY DISTILLING (A) THE PRODUCT DERIVED FROM A REACTION MIXTURE OF A THIOL- OR HYDROXYLCONTAINING ORGANIC MATERIAL, A PHOSPHORUS HALIDE AND A CATALYST MATERIAL SELECTED FROM AMIDE, PHOSPHORUS AMIDE, UREA AND AMMONIUM SALT COMPOUNDS CONTAINING A NITROGEN ATOM CAPABLE OF FORMING A COMPLEX WITH A PHOSPHORUS MOIETY OR (B) THE PRODUCT DERIVED FROM SUCH REACTION MIXTURE IN WHICH SAID DISTILLATION RESIDUE IS EMPLOYED AS THE CATALYST MATERIAL, THEREBY PROVIDING HIGH YIELDS OF SUBSTANTIALLY PURE ESTERS AND ALLOWING PREPARATION OF SELECTED HALOGEN-CONTAINING MONO- AND DI-ESTERS OF PHOSPHORUS ESTERS HAVING SUBSTANTIALLY NO SIDE REACTANT CONTAMINATION. THE PHOSPHORUS ESTERS ARE USEFUL AS INTERMEDIATES IN THE PREPARATION OF PLASTICIZERS, OIL ADDITIVES AND FUNCTIONAL FLUIDS.
摘要:
Organic material, especially polypropylene, is stabilized by the addition of mono- or di- (dihydrocarbyl-hydroxyphenyl) alkyl phosphates, phosphites, thiophosphates or thiophosphites, such as 3,5-di-tert-butyl-4-hydroxyphenyl di-n-octadecyl phosphate. Effectiveness is synergistically improved by inclusion of a dialkyl thiodialkanoate such as dilaurylthiodipropionate.