Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1990-01-23
1990-09-25
Lilling, Herbert J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521 64, 521 91, 521143, 521154, 523212, 524297, 524377, 524493, 524586, B01D 3920, C08K 336, C08L 2302, H01M 216
Patent
active
049593960
ABSTRACT:
The composition comprises polyolefins, fillers and a plasticizer. It contains 0.2 to 20 wt. % etoxysiloxane, 5 to 60 wt. % polyolefin, 10 to 60 wt. % white black filler, and 10 to 75 wt. % polyethyleneglycol, petroleum oil or dioctylphtalate. The polyolefin can be high-density polyethylene with a melt index at a standard charging up to 6, superhigh-molecular polyethylene, polypropylene, or a mixture of polypropylene and polyethylene, or of high-density polyethylene and super-high-molecular polyethylene at as ratio of 0 to 100 wt. parts high-density polyethylene for every 100 wt. parts super-high-molecular polyethylene. The composition is prepared by treating the filler with etoxysiloxane at room temperature, then adding the polyolefin and the plasticizer to form a mixture, and then homogenizing the mixture in a cold state or with heating. With this composition are prepared microporous separators having an average pore size of below 0.05.mu., and having high physicomechanical properties.
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Budevski Evgeni B.
Filipova Stefka K.
Yankov Lyuben K.
Zlatanov Ivo Y.
Centralen Institute Po Chimitcheska Promishlenost
Lilling Herbert J.
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