Plastic and nonmetallic article shaping or treating: processes – Vacuum treatment of work
Patent
1989-06-21
1991-09-10
Thurlow, Jeffery
Plastic and nonmetallic article shaping or treating: processes
Vacuum treatment of work
26421123, 26421124, 264349, 26433118, 425203, B29B 784
Patent
active
050471880
ABSTRACT:
Disclosed is a process for the preparation of a modified methacrylic resin molding material, wherein a volatile component is removed from a methacrylic polymer composition containing a volatile component including an unreacted monomer, a solvent or a by-product, and a modifying polymer is added to the methacrylic polymer composition to prepare a modified molding material. The removal of a volatile component from the methacrylic polymer composition and the addition and kneading of a modifying polymer into this polymer composition can be performed at a high efficiency by a process wherein a volatile component-removing extruder comprising a plurality of vent zones and a modifying polymer supply mechanism arranged upstream of the final vent zone but preferably downstream of the adjacent vent zone is used, the modifying polymer is fed from the modifying polymer supply mechanism and incorporated into the methacrylic polymer composition continuously flowing in the volatile component-removing extruder, and the volatile component is removed from the obtained mixture in the final vent zone and the mixture is then extruded.
REFERENCES:
patent: 3642752 (1972-02-01), Sutter
patent: 3751527 (1973-08-01), Bortnick
patent: 3825515 (1974-07-01), Lucas et al.
patent: 3900453 (1975-08-01), Shimada et al.
patent: 3968059 (1976-07-01), Shimada et al.
patent: 3968090 (1976-07-01), Shimada et al.
patent: 3992500 (1976-11-01), Kruder et al.
patent: 4065532 (1977-12-01), Wild et al.
patent: 4324868 (1982-04-01), Maeda
patent: 4649005 (1987-03-01), Kobayashi et al.
Matsui Tsutomu
Okada Kazuya
Shimomura Yasunori
Tanaka Hidemi
Taniguchi Masahiro
Mitsubishi Rayon Company Ltd.
Thurlow Jeffery
LandOfFree
Process for preparation of modified methacrylic resin molding ma 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 preparation of modified methacrylic resin molding ma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparation of modified methacrylic resin molding ma will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-538552