Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1974-01-17
1976-06-29
Wong, Jr., Harry
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
23252R, 137 1, 526 78, 526342, 526329, 526331, 526347, C08F12014, C08F22014
Patent
active
039666930
ABSTRACT:
A continuous mixing method and system for preparation of syrup employed as a starting material for continuously manufacturing plate products therefrom are disclosed. The syrup is prepared by a method in which at least one additive is incorporated into at least one master batch of methyl methacrylate or a monomer mixture of methyl methacrylate and a copolymerizable unsaturated compound or a syrup of a monomer-polymer mixture thereof and the flow of the resulting liquid mixture is continuously combined with the flow from another batch of a syrup of the monomer-polymer mixture in a proportion such that the master batch is less in amount than said other batch, and the combined flows are continuously blended with each other. In the mixing system, the fluctuation in the flow from the master batch is detected by a detecting means which is operable for actuating the closure of the valve means provided for the storage vessel for the master batch, upon detection of the fluctuation in the flow rate from the master batch. Also, metering pumps are provided in the system, each being associated with each of the vessels for the master batch and the other batch for discharging the liquid content of each vessel at each fixed displacement ratio. The metering pumps are driven by a common motor via respective gear engagements having respective gear ratios for determining the fixed displacement ratios of the pumps. A mixer is also provided in the system for continuously blending the respective liquid contents to continuously obtain the starting material.
REFERENCES:
patent: 2084399 (1937-06-01), Kuettel
patent: 3380980 (1968-04-01), Calkins et al.
patent: 3414499 (1968-12-01), Gardner et al.
patent: 3474081 (1969-10-01), Bosworth
Mitsubishi Rayon Co. Ltd.
Wong, Jr. Harry
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