Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1993-12-17
1995-02-21
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521 58, C08J 9228
Patent
active
053915810
ABSTRACT:
Disclosed herein is a method of producing foamed particles of an ethylene-based resin, which have a high expansion ratio and are free from the formation of fine cells, by dispersing particles of the uncrosslinked ethylene-based resin, which are obtained using, as a base resin, an ethylene/.alpha.-olefin copolymer containing, as a comonomer component, 1.0-10 wt. % of an .alpha.-olefin having 4-10 carbon atoms, in a dispersion medium in the presence of a foaming agent in a closed vessel, heating the resultant dispersion to impregnate the resin particles with the foaming agent, and then releasing the resin particles into a region of a pressure lower than the internal pressure of the vessel at a foaming temperature not lower than the softening temperature of the resin particles, thereby expanding the resin particles. An aliphatic hydrocarbon and/or an alicyclic hydrocarbon and carbon dioxide are used in admixture as the foaming agent in amounts satisfying the following equations (1) and (2) at the same time:
REFERENCES:
patent: 4379859 (1983-04-01), Hirosawa et al.
patent: 4617323 (1986-10-01), Kuwabara et al.
patent: 4695593 (1987-09-01), Kuwabara et al.
patent: 4704239 (1987-11-01), Yoshimura et al.
patent: 4937271 (1990-06-01), Akamatsu et al.
patent: 5015667 (1991-05-01), Yoshimura et al.
patent: 5071883 (1991-12-01), Kuwabara et al.
Kuwabara Hideki
Oikawa Masaharu
Sasaki Hidehiro
Shioya Satoru
Tsurugai Kazuo
Foelak Morton
JSP Corporation
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