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Continuous process for preparing particulate microporous, open-celled polymer structures in a screw-type extruder

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B29D-027/00   
미국특허분류(USC) 264/5 ; 260/25 ; M ; 264/9 ; 264/28
출원번호 US-0576632 (1975-05-12)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 10  인용 특허 : 1
초록

A continuous process for preparing particulate microporous, open-celled polymer structures in a co-rotating twin-screw processor comprising agitating normally solid organic polymer and chlorofluorocarbon in the melt zone of said processor, cooling the resulting solution under agitation in the cooling and milling zone, extruding a snow-like mass from the cooling and milling zone, and then removing the chlorofluorocarbon from the snow-like mass to leave the polymer structures.

대표
청구항
▼

A continuous process for preparing particulate, microporous, open-celled polymer structures comprising i. continuously feeding about 5 to 50 parts by weight of a normally solid organic polymer having a glass transition temperature or a crystalline melting point of at least 293°K., and about 95 to 50 parts by weight of a chlorofluorocarbon or a mixture of chlorofluorocarbons having a boiling point in the range of about 10°C. to 150°C., a melting point in the range of about -40°C. to 125°C., an entropy of fusion of less than 10 calories/°K./mole, a plastic...

이 특허에 인용된 특허 (1)

  1. Thomas H. Ronald (Penfield NY). Method for reducing particle size. USP1976023936517.

이 특허를 인용한 특허 피인용횟수: 10

  1. Ferencz, Joseph M.; Polk, W. David; Faler, Dennis L.. Aqueous dispersions of polymer-enclosed particles, related coating compositions and coated substrates. USP2013108557895.
  2. Polk, W. David. Aqueous dispersions of polymer-enclosed particles, related coating compositions and coated substrates. USP2015038987349.
  3. Blach,Josef A.. Device for dispersing and melting flowable materials. USP2008097425090.
  4. Shmidt Creston D. ; Imeopkaria Daniel D. ; Suh Kyung W. ; Malone Bruce A. ; Franklin Ken. Extruded, open-cell microcellular alkenyl aromatic polymer foams, process for making, and articles made therefrom. USP1998075780521.
  5. Ferencz, Joseph M.; Gaspar, Vincent A.. Focused heat extrusion process for manufacturing powder coating compositions. USP2010027666338.
  6. Hendrikus Machielse,Johannes Bernardus; Steenbergen,Jan. Method for encapsulation of an inorganic component in a wax, a wax particle prepared by the method and the use thereof. USP2007017157113.
  7. Chevalier Christophe,FRX ; Chanzy Henri,FRX ; Wertz Jean-Luc,FRX. Method for manufacturing alveolate cellulosed products. USP2000106129867.
  8. Sandler, Jan Kurt Walter; Bellin, Ingo; Djuric, Dejan; Kolter, Karl; Ruckdäschel, Holger. Nanoporous foamed active compound-containing preparations based on pharmaceutically acceptable thermoplastically workable polymers. USP2014018636929.
  9. Mitushashi, Yasuo. Porous electrophotographic toner and preparation process of making. USP1983044379825.
  10. Ivanov George. Solid state shear extrusion pulverization. USP1998045743471.

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