Patent · US Expired

Polycarbonate powder

US3954713A · kind A · utility

17Cited by

2References

12Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Hilla Schnoring
Hugo Vernaleken · Walsrode, DE
Dieter Margotte
Josef Witte · Cologne, DE

Key dates

Filing date	Aug 22, 1974
Grant date	May 4, 1976
Priority date	—
Expiry date	Aug 22, 1994

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2369/00
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A process for manufacturing polycarbonate powder wherein a solution of polycarbonate in a water-immiscible solvent is emulsified in water which contains a very small amount of a laminator. The solvent is thereafter removed from the emulsion to form a dispersion of the polycarbonate powder. The polycarbonate powder settles out of the dispersion and is removed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.