摘要:
Fuel oils and lubricants of improved properties contain ethylene-propylene copolymers bearing units derived from N-vinyl pyrrolidone and phenothiazine.
摘要:
Fuel oils and lubricants of improved properties contain ethylene-propylene copolymers bearing units derived from N-vinyl pyrrolidone and phenothiazine.
摘要:
Lubricating oils of improved oxidative stability, dispersancy, and viscosity index contain ethylene-propylene copolymer bearing allyl glycidyl ether or glycidyl methacrylate graft monomer--which has been functionalized with 2,5-dimethyl aniline or 2,6-dimethyl morpholine.
摘要:
A multi-function Viscosity Index Improver having properties, including dispersancy and antioxidation, which comprises a functional ethylene-propylene copolymer having a dispersant/antioxidant unit grafted thereon.
摘要:
Lube oils of improved properties contain ethylene-propylene copolymer bearing moieties derived from the reaction product of allyl glycidyl ether and a heterocyclic amine such as N-(3-aminopropyl) morpholine.
摘要:
Fuel oils and lubricants of improved properties contain ethylene-propylene copolymers bearing units derived from N-vinyl pyrrolidone and phenothiazine.
摘要:
An oil containing a viscosity index improver of improved oxidative stability contains, as an anti-oxidant system 2,6-di-t-butylphenol and 1-3-aminopropyl-2-pipecoline.
摘要:
Fuel oils and lubricants of improved properties contain ethylene-propylene copolymers bearing units derived fron N-vinyl pyrrolidone and phenothiazine.
摘要:
A laser having a deflector in which bypass gas is separated from a cathode and the local discharge region around the cathode, and in which the bypass gas has a relatively long open passage around the deflector to the cathode. The deflector has an open end surrounding at least a portion of the cathode and an aperture and having an aperture and a raised shoulder connected to the end of a laser tube. The aperture is aligned with the discharge bore of the laser tube with gas bypass bores outside of the aperture enclosed by the shoulder. The anode end of the laser tube may also have a deflector which is an annular washer having an aperture and a raised shoulder. The washer has a diameter nearly as large as the anode in which it is mounted.
摘要:
A cathode assembly for a gas laser housing has weldless sleeves for securing a cathode to the laser housing. A support flange, brazed or heliarc welded to a gas reservoir at one end of a laser tube, supports a cathode. Ceramic feedthroughs brazed or heliarc welded to holes in the flange bring wires through the flange while maintaining insulation therefrom. The helical cathode is joined to copper stubs from the feedthroughs by crimped conductive sleeves.