摘要:
1. AN ELECTRICALLY CONDUCTIVE COMPOSITION PREPARED BY POLYMERIZING A MONOMERIC MIXTURE CONTAINING AT LEAST ABOUT 90% OF AN ACRYLONITRILE MONOMER IN THE PRESENCE OF A PERCHLORATE HYDRATE SALT IN THE PROPORTION OF FROM 0.5 TO 4.5 MOLES OF SAID SALT PER MOLE OF THE ACRYLONITRILE, AND IN THE PRESENCE OF AN AZO-BIS-ISOBUTYRONITRILE, THE PERCHLORATE HYDRATE SALT BEING SELECTED FROM THE GROUP CONSISTING OF THE HYDRATES OF LITHIUM PERCHLORATE, IRON PERCHLORATE, CHROMIUM PERCHLORATE, MANGANESE PERCHLORATE, COLBALT PERCHLORATE, NICKEL PERCHLORATE, COPPER PERCHLORATE, MAGNESIUM PERCHLORATE, CALCIUM PERCHLORATE AND ZINC PERCHLORATE.
摘要:
An article loaded with a filler providing good electrical or heat conductivity is formed by mixing the filler with particles of nonflowing compressible resin, as well as a sufficient amount of flowable resin. The flowable resin is then hardened. The nonflowing resin particles concentrate the filler particles in a network of high conductivity pathways and in this way they provide high conductivity in the macrostructure with a very low overall concentration of filler particles; and at the same time they enhance the resilience of the finished article. They also prevent settling of the filler particles prior to hardening, thereby maintaining a fairly homogeneous dispersion of the filler.
摘要:
The present invention relates to a method of incorporating solid additives into vinyl chloride polymers. More precisely the invention relates to a method of incorporating said additives during the polymerization process which is commenced as a mass polymerization and completed as a suspension polymerization.
摘要:
THE PRESENT INVENTION IS DIRECTED TO METHODS USEFUL FOR PROTECTING ARTICLES FROM ATTACK BY MARINE-FOULING ORGANISMS WHICH COMPRISES TREATING AN ARTICLE WITH COMPOSITIONS CONTAINING AN ANTI-FOULING AMOUNT OF AN ORGANOARSINE COMPOUND CORRESPONDING TO THE FORMULA
10-((X)N-PHENOXARSIN-10-YL),(X'')N-PHENOXARSINE
WHEREIN X AND X'' REPRESENT HALOGEN, AND N IS 0, 1 OR 2, AND THEREAFTER PLACING THE ARTICLE SO TREATED IN THE ENVIRONMENT OF THE MARINE-FOULING ORGANISMS. METHODS OF TREATING ARTICLES BY PAINTING THEIR SURFACES WITH A PAINT COMPOSITION CONTAINING AT LEAST 0.2 POUND OF ONE OF THE ABOVE ORGANOARSINE COMPOUNDS PER GALLON OF COMPOSITION ARE DESCRIBED TOGETHER WITH USEFUL PAINT COMPOSITION. THE HALOGENATED ORGANOARSINE COMPOUNDS OF THE ABOVE FORMULA WHEREIN N IS 1 OR 2 ARE NOVEL COMPOUNDS AND CONSTITUTE A SECOND EMBODIMENT OF THIS INVENTION.
摘要:
Disclosed herein is a process for the preparation of glassconcentrate capsules which comprise a plurality of strands of glass fibers encapsulated in a collimated array within a vinyl chloride polymer matrix which process comprises: 1. Forming a suspension of strands of glass fibers in a vinyl chloride monomer/water mixture containing a critical amount (viz., from 0.05 to 2.0 percent by weight based on the total weight of monomer and glass) of protective colloid; 2. Agitating the suspension using a low-shear type of agitation which moves the whole suspension pass while avoiding localized high-shear agitation; 3. Polymerizing the monomer; and 4. Recovering the glass-concentrate capsules.
摘要:
A METHOD OF PRODUCING A TEMPERATURE SENSITIVE, ORGANIC ELECTRICAL RESISTOR MATERIAL IN WHICH A THERMOPLASTIC, SUCH AS POLYETHYLENE, AND A CONDUCTIVE MATERIAL, SUCH AS CARBON BLACK, ARE MIXED IN PREDETERMINED PROPORTIONS AND THEN PLASTIC MOLDING MATERIAL AND MOLDED TO PROVIDE A SUBSTANCE EXHIBITING A RELATIVELY LOW ELECTRICAL RESISTANCE BELOW A TEMPERATURE RANGE OF ABOUT 100*-130*C. AND A RELATIVELY HIGH RESISTANCE ABOVE SAID TEMPERATURE RANGE.