摘要:
A thixotropic conductive composition is disclosed that can be used to form conductive features on an electronic device. The thixotropic composition comprises a conjugated polymer, a solvent, and multi-wall carbon nanotubes. The conjugated polymer and the solvent are capable of forming a thixotropic fluid. This enables excellent stability of the carbon nanotubes in the composition at a very high loading. The composition has a long shelf life.
摘要:
Disclosed herein are polymer compounds and a method for preparing thereof. More specifically, provided are polymer compounds with well-connected, narrow size distribution free-volume element and a method for preparing the polymer compounds by thermal rearrangement for aromatic polyimides containing ortho-positioned functional groups in the solid state.
摘要:
A stabilizer system for stabilizing halogen-containing polymers comprising a perchlorate salt and at least one indole compound, a composition comprising such a stabilizer system, process for stabilizing a chlorine-containing polymer using such a stabilizer system, and an article manufacture comprising PVC stabilized by such a stabilizer system.
摘要:
Conductive polymers are formed with a self-regenerating oxidant system made with a reversibly reducible metal salt at amounts sufficient to polymerize a cyclic monomer through oxidation and leave a reduced metal ion, and an oxidant in an amount sufficiently small and under conditions sufficient to oxidize the reduced metal ion but avoid oxidation or degradation of the polymer. The most preferred combination of agents includes ferric nitrate and a small amount of ammonium nitrate at a pH within the range of 2 to 7.
摘要:
Finely divided electrically conductive pyrrole polymers are prepared by a process in which the pyrroles, in solution and in the presence of a conductive salt, are treated with an oxygen-containing oxidizing agent. The finely divided conductive pyrrole polymers can be used for the production of moldings.
摘要:
Metal, preferably divalent copper, cobalt or nickel, phthalocyanine tetraamines are used as curing agents for epoxides. The resulting copolymers have high thermal and chemical resistance and are homogeneous. They are useful as binders for laminates, e.g. graphite cloth laminate.
摘要:
Thermally stable poly(quinoxalinobisimidazonaphthaldimide) materials are disclosed that are prepared by the condensation of multifunctional aromatic carboxylic acids or derivatives thereof and tetraamino phenylated quinoxaline compounds. The high thermal stability of the polymers and their solubility in a variety of organic solvents renders them particularly suitable for use in high temperature applications such as in the fabrication of plastic composites and protective coatings.
摘要:
1-Y2,2-Y3,3-Y4,4-Y5,5-Y6,5-Y7,6-(Z2-Z1-),6-Y1,1,4-(-X-)- RESINS HAVING HIGH TEMPERATURE STABILITY CAN BE MADE BY CURING CHEMICALLY STABLE ALICYCLIC ENDO END CAPPED AROMATIC PREPOLYMERS. THE PERPOLYMERS CAN BE MADE BY REACTING PROPER STOICHIOMETRIC AMOUNTS OF TETRAACIDS OR DERIVATIVES WITH AN AROMATIC TETRAAMINE, AND AN END CAPPING COMPOUND HAVING THE FORMULA
CYCLOHEX-2-ENE
WHEREIN Y1-Y6, INCLUSIVE, CAN BE HYDROGEN, HALOGEN, NITRO, ARYL, ALKYL, ALKYL ETHER, OR ALKARYL; X CAN BE CARBONYL, OXYGEN, SULFUR, METHYLENE, HALOGEN SUBSTITUTED METHYLENE, ALKYL SUBSTITUTED METHYLENE, OR ARYL SUBSTITUTED METHYLENE; Z1 CAN BE AN ARYLENE OR AN ALKYLENE GROUP HAVING 0 TO 1 CARBON ATOMS; Z2 CAN BE AN ISOCYANATE RADICAL OR AN AMINE RADICAL; AND Y7 CAN BE AN ISOCYANATE RADICAL OR AMINO IN A STABLE COMBINATION WITH Y6. THE END CAPPING COMPOUND CAN BE SYNTHESIZED BY REACTING A CYCLO DIOLEFIN WITH AN OLEFINIC COMPOUND ACCORDING TO A DIELS-ALDER REACTION.
摘要:
PROCESSES FOR THE PREPARATION 2,6-DIAMINO-3,5-DINITROPYRIDINE FROM 2,6-DIAMINOPYRIDINE AND CATALYTIC REDUCTION OF THIS DINITROPYRIDINE TO 2,3,5,6-TETRAAMINOPYRIDINE FREE BASE AND ACID SALTS THEREOF, AND PROCESSES FOR PREPARING POLYMERS FROM SAID PYRIDINES.