C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
403/31, 23/376
C08G 18/10 (2006.01) B01J 19/00 (2006.01) B29B 7/74 (2006.01) C08G 18/54 (2006.01)
Patent
CA 1136348
ABSTRACT OF THE DISCLOSURE A continuous process for the production of flame- resistant foamed plastics material by condensation of aqueous aminoplast precondensates with diisocyanates or polyisocyanates, wherein, in a first mixing stage, the isocyanate is mixed with 4 to 14% by weight of catalyst, the catalyst being an organic amine and/or an organic metal compound, at temperatures of 40° to 230°C, with a residence time of 1 to 8 seconds, and directly thereafter, in a second mixing stage, the aminoplast preconden- sate and, simultaneously but separately from the aminoplast, an acid curing catalyst are introduced, after which the foamable mixture thereby produced is discharged continuously. The apparatus for performing this process comprises two mixing chambers connected in series, the first mixing chamber being coolable and the mixing chambers being connected via a nozzle, the ratio of the cross-section of the narrowest point of the nozzle to the sum of the cross-sections of the feed lines supplying the first mixing chamber being 0.3:1 to 0.9:1.
359719
Golser Leopold
Woisetschlager Helmut
Chemie Linz Aktiengesellschaft
George H. Riches And Associates
LandOfFree
Process for the continuous production of a flame-resistant... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the continuous production of a flame-resistant..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the continuous production of a flame-resistant... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-270964