摘要:
The invention concerns a thin film of a permanent hydrophobic and optionally oleophobic finish for polymer surfaces. The film is formed from at least one layer of a water-soluble polycation and cationic synthetic resin. For further improvement of the oleophobic and permanent hydrophobic properties the film can additionally contain a long-chain surfactant or an alkyl-substituted polyanion.
摘要:
In the production of perfluoroalkylsulfonyl fluorides by electrolytic fluorination of alkylsulfonyl fluoride, the electrolyte contains anhydrous hydrogen fluoride, an alkylsulfonyl fluoride, and at least one additional component selected from alkaline earth fluorides, alkali tetrafluoroborates, alkali hexafluorophosphates, hexafluorophosphoric acid, tetrafluoroboric acid, boron trioxide, boron trifluoride, or mixtures thereof.
摘要:
Waterproofing and oil-proofing agents contain A. compounds containing a perfluoroalkyl group, and B. quaternization products of basic fatty acid amides.
摘要:
Bisperfluoroalkyl-substituted diols containing sulfide, sulfone or polysulfide linkages and a method for making them are described. These diols can react with isocyanates to form urethanes; diisocyanates to form polyurethanes; chloroformates to form carbonates; with carboxylic, sulfuric or phosphoric acids or derivatives to form carboxylate esters, sulfate esters, phosphate esters respectively. These diol compounds and their derivatives are useful for imparting oil and water repellency to substrates such as glass, wood, paper, leather, wool, cotton, polyester and other substrates.
摘要:
A high speed process for producing polyester filaments, in which process the formation of fluffs and the occurrence of filament breakage are very slight and a package having a good winding appearance can be stably obtained, by melt spinning polyester filaments at a taking-up speed of 3000 m/minute or more, while applying an aqueous emulsion of an oiling agent to the filaments, the oiling agent includes 50% by weight or more of a monobasic acid ester of a C.sub.10-18 aliphatic monocarboxylic acid with a C.sub.4-18 aliphatic monohydric alcohol and having an average molecular weight of 300 to 500; 1 to 15% by weight of a polyoxyalkylene glycol copolymer having an average molecular weight of 1,000 to 30,000; and 0.1 to 3% by weight of an organic siloxane compound and/or a fluoroalkyl (C.sub.3-18) group-containing compound.
摘要:
A process is disclosed for treating aramid fibers such that metal plating applied thereto is durable, highly conductive, and strongly adherent. The process involves contacting the fibers with an acid, neutralizing and washing the fibers with water, and then plating the fibers by an electroless plating process. The acid treatment of the fibers promotes adhesion between the metal and the fibers and promotes high electrical conductivity for the plated metal.
摘要:
Running and tearing of nylon hosiery and other hydrophobic fabrics are prevented by immersing the hosiery and fabrics in a special aqueous treatment comprising a film-forming polymeric solution, a wetting agent, a substantive quaternary compound and fabric softener to encourage attachment to the substrate, and an elasticity enhancing plasticizer.
摘要:
Pentafluorosulfanyl fluoroaliphatic carbonyl and sulfonyl fluorides, derivatives of the acid fluorides and the preparation and use of the acid fluorides and derivatives. The fluoroaliphatic moiety of said acid fluorides comprise at least three fully-fluorinated carbon atoms. The derivatives of the acid fluorides are useful as surface-active agents and surface-treating agents.
摘要:
A protective garment fabricated at least in part from a composite fabric which contains a layer of a highly fluorinated ion exchange polymer having sulfonic acid multivalent metal ion salt functional groups.