Open-cell composition and method of making same

Details Open-cell composition and method of making same Open-cell composition and method of making same

1986-01-27

1986-09-23

Foelak, Morton

Coating processes

Foraminous product produced

428290, 521 54, 521 57, 523218, 523219, 524430, A21D 600

Patent

active

046135243

ABSTRACT:
Open-cell foamed particles and molded shapes having up to 99% porosity are formed from fumed oxides, for example SiO.sub.2, Al.sub.2 O.sub.3, TiO.sub.2, with or without functional groups, in 30-99%, by weight, and polymers, for example polyvinyl chloride and copolymers thereof, and styrene. The resulting structures are thermally insulating. The structures can be formed by beating small amounts of a liquid polymerizable monomer into the fumed oxide or by immersing a formed shape of the oxide in a liquid monomer and thereafter polymerizing the monomer to a solid polymer. The oxide is believed to have a microfibrous nature and the polymer is believed to coat the oxide, without destroying the open-nature configuration of the oxide, and cements the oxide particles together in the microfibrous condition.

REFERENCES:
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patent: 3511787 (1970-05-01), Berlorelli et al.
patent: 3945955 (1976-03-01), Ihde, Jr.
patent: 3985929 (1976-10-01), Von Bonin et al.
patent: 4446253 (1984-05-01), Hahn et al.
patent: 4473683 (1984-09-01), Coran
patent: 4503117 (1985-03-01), Murray

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