THE USE OF POLY(METAL PHOSPHINATES) AS ANTISTATIC COATINGS, MULTIPURPOSE FLUID THICKENERS, AND THERMALLY STABLE COATINGS.
Final rept. 16 Feb-15 Nov 67,
PENNSALT CHEMICALS CORP KING OF PRUSSIA PA RESEARCH AND DEVELOPMENT DEPT
Pagination or Media Count:
Water-repellant and transparent plasticized polymetal phosphinate compositions were developed for antistatic coatings on polyethylene. Coatings based on CrH2O OH OPBu2O2, CrH2O OH OPMe PhO2, CrH2O OHOPPh2O2, and TiOOPPh2O2 all dissipated a 5 kV positive charge in one second or less. Coatings based on TiOOPPh2O2 also dissipated a 5 kV negative charge in one second or less and were essentially not tacky. The trisphosphinate CrOPC8H172OOPMePhO2 prepared in situ was found to be an effective thickener for a variety of lubricant fluids in the 5-14 concentration range. A thickener with substantially greater thermal stability was prepared by the reaction of CrH2O OHOPMePhO2 with MePhPOOH. Greases made from DC550 and these thickeners exhibit drop points generally above 600F. and good antiwear properties however, their bearing performance is limited. Coatings of CrOPC8H172OOPMePhO2 pigmented with TiO2 adhere well to cold-rolled 1010 steel and exhibit good hardness and resistance to jet oil or water. They can tolerate 250C. in air for one hour but degrade at 300C. The use of more stable chromiumIII trisphosphinates, i.e., trisphosphinates containing no alkyl groups other than methyl, for coatings was briefly explored. Author
- Polymer Chemistry
- Coatings, Colorants and Finishes
- Lubricants and Hydraulic Fluids