摘要:
ELECTROPLATING OF A MOLDABLE PLASTIC, WITH OR WITHOUT AN INERT FILLER THEREIN, IS ACHIEVED BY CONDITIONING A PREFORMED ARTICLE OF SAID PLASTIC BY A COMBINATION TREATMENT CONSISTING OF AN ACID CHROMATE EACH AND A PERSULFATE TREATMENT. THE RESULTING CONDITIONED ARTICLE IS THEREAFTER PLATED BY PREPLATING WITH AN ELECTROLESSLY PLATABLE METAL FOLLOWED BY ELECTROPLATING THE PREPLATED ARTICLE WITH A FINAL FINISH TO OBTAIN A METAL-PLATED PLASTIC PRODUCT.
摘要:
A water-soluble rodent-repellent composition is coated onto a material, e.g., a cable, which is laid into the ground. Ground moisture dissolves the composition, forming in the earth surrounding the cable a rodent-repellent barrier thus preventing contact of the rodent with the cable or material. Any rodent repellent in a water-soluble or water-dispersible composition can be used. Specifically mentioned in the disclosure as nowpreferred effective rodent repellents are N,N-dialkyl sulfenyl dithiocarbamates, e.g., the N,N-dimethylsulfenyl dithiocarbamates, N,N-dimethyl-S-methylsulfenyl dithiocarbamate and N,N-dimethyl-S-tert-butylsulfenyl dithiocarbamate.
摘要:
A CABLE CORE OF ONE OR MORE ELECTRICAL CONDUCTORS IS COVERED BY AN ELECTROPLATABLE COPOLYMER OF AT LEAST ONE MONOOLEFIN AND AT LEAST ONE DIOLEFIN OR A BLOCK COPOLYMER OF MAJOR AMOUNT OF AT LEAST ONE MONOVINYL-SUBSTITUTED AROMATIC COMPOUND AND A MINOR AMOUNT OF AT LEAST ONE CONJUGATED DIENE. A METAL LAYER IS ELECTROPLATED ON THE OUTER SURFACE OF THE POLYMER TO FORM AN ELECTRICAL SHIELD FOR THE CABLE CORE. THE ELECTROPLATED LAYER IS COVERED WITH A PROTECTIVE POLYMER LAYER, THE LATTER PREFERABLY BEING SEPARATED FROM THE ELECTROPLATED LAYER BY A LUBRICANT TO PREVENT BONDING OF THE PROTECTIVE POLYMER LAYER TO THE ELECTROPLATED LAYER.