Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1995-01-27
1996-08-20
Lipman, Bernard
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
5253276, 5253305, 525379, C08F 832
Patent
active
055480330
ABSTRACT:
A plastic melt is treated for a short-time with a liquid treatment agent under pressure, it is divided into defined subquantities, individual subquantities are brought into contact with a treatment agent and combined for a residence time of less than one second with portions of at least one other subquantity, and portions of the mixture thus formed are separated and combined with another subquantity; the steps of dividing and combining the mixture are repeated several times at intervals of less than one second until an intimate mixture of the plastic melt and the treatment agent has formed, allowing the preparation of especially homogeneously structured thermoplastic materials, e.g., poly(methacrylalkylimide) plastics, which are compatible with poly(methyl methacrylate).
REFERENCES:
patent: 4246374 (1981-01-01), Kopchik
patent: 4746478 (1988-05-01), Fujisaki et al.
Research Disclosure, No. 321, Jan. 1991, M. P. Hallden-Abberton, et al., "Control of Functionality in Glutarimide Polymers", 2 pages.
Dutschke Joachim
Hoess Werner
Schikowsky Hartmut
Vetter Heinz
Lipman Bernard
Roehm GmbH Chemische Fabrik
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