Process for production of carbon products

Details Process for production of carbon products Process for production of carbon products

1973-10-18

1976-02-10

Hayes, Lorenzo B.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

423449, B29C 2500

Patent

active

039377750

ABSTRACT:
A process for the production of carbon micro-balloons and carbon micro-spheres which comprises reacting polymeric microparticles with sulfuric anhydride or chlorosulfonic acid so as to make the surface layer or the whole of the micro-particles infusible and then carbonizing the obtained micro-particles by heating them at a temperature above the decomposition point of the starting polymer.

REFERENCES:
patent: 2797201 (1957-06-01), Veatch et al.
patent: 3264073 (1966-08-01), Schmitt
patent: 3403008 (1968-09-01), Hamling
patent: 3639953 (1972-02-01), Kimura et al.
patent: 3666417 (1972-05-01), Araki et al.
patent: 3723610 (1973-03-01), Fischer et al.

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