POLYMERIZATION OF .epsilon.-CAPROLACTAM
CA 1076743 A · Owner: Basf Aktiengesellschaft · Inventors: Matthies, Paul; Hoerauf, Werner; Kunde, Joachim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
O.Z. 31,765, ABSTRACT OF THE DISCLOSURE An improved process for the continuous polymerization of .epsilon.-caprolactam in the presence of water as initiator in a vertical downward-flow tubular reactor, in which the .epsilon.-caprolactam is partially polymerized at elevated temperature in a first mechanically agi-, tated reaction zone and is further polymerized in further reaction zones to the desired degree of polymerization. Poly-.epsilon.-caprolactam is discharged in the form of a melt. The polymerization is carried out at a gauge pressure of from 0.2 to 0.9 bar constant in all, reaction zones. The temperature in the first reaction zone is from 260 to 295°C whilst obeying the condition t …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted April 29, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 29, 1997.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.