Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1983-04-01
1985-04-23
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 61, 525354, 525355, 525356, 5253591, 5253592, 5253593, 525390, 525398, 525403, 525410, 525416, 525417, 525418, 525461, 525471, 525472, 525474, 525480, 525509, 525534, 525535, 525538, 525539, 525540, C08F 822
Patent
active
045131163
ABSTRACT:
Continuous halogenation of polymers is achieved by contacting polymer and halogenating agent in a continuous flow device in which the reactants are present as either co-continuous phases or wherein the halogenating agent is present as a continuous phase and the polymer is present as a discontinuous phase, the polymer is subjected to deformation during reaction and in which means are provided for disengaging reaction by-products and unreacted halogenating agent from the reaction mixture. In a preferred embodiment the polymer passes through three extruder-reactor zones under controlled conditions to achieve halogenation: feed, reaction (preferably vented), neutralization, and optionally a wash and exit zone. A continuous halogenating agent phase is achieved during reaction by avoiding complete filling of the reaction zone with polymer. Various halogenated polymers are produced, for example, halogenated linear low density polyethylene and halogenated butyl rubber.
REFERENCES:
patent: 3023191 (1962-02-01), Tegge et al.
patent: 3242148 (1966-03-01), Kinchen et al.
patent: 3510416 (1970-05-01), Vaccari et al.
patent: 3936430 (1976-02-01), Schoen et al.
patent: 4185057 (1980-01-01), Rossiter et al.
Davis William M.
Erwin Lewis
Kowalski Ronald C.
Newman Neil F.
Cohen Harvey L.
Exxon Research and Engineering Co.
Lipman Bernard
Schofer Joseph L.
LandOfFree
Process for the manufacture of halogenated polymers 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 manufacture of halogenated polymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the manufacture of halogenated polymers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-37346