Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...
Patent
1996-10-02
1998-07-28
Truong, Duc
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Treating polymer containing material or treating a solid...
528502R, 528503, 264 14, 264 457, 264 80, 264204, C08F 600
Patent
active
057864454
ABSTRACT:
The invention relates to a process for drying polymeric powders and polymeric agglomerates, in particular thermoplastic aromatic polycarbonate or other thermoplastic polymers such as, for example, acrylonitrile-butadiene-styrene copolymer, in the melt, whereby thermoplastic polymeric powders or polymeric agglomerates containing water or solvent or both are freed from adhering moisture and contained solvent, accompanied by melting, in an apparatus provided with rotating baffles for cleaning the walls of the apparatus and for distribution and transport of the material being dried, by heat input through the walls or through the rotating baffles or both as well as by heat input as a result of shearing action. The process of drying and that of melting for the subsequent granulation are thereby combined.
REFERENCES:
patent: 3799234 (1974-03-01), Skidmore
patent: 4909898 (1990-03-01), Pasdiya et al.
patent: 4921909 (1990-05-01), Sugimori et al.
patent: 5041249 (1991-08-01), Yehl
patent: 5047188 (1991-09-01), Okada et al.
patent: 5407266 (1995-04-01), Rotsch et al.
Bamberger Thomas
De Vos Stefaan
Denecker Gabriel
Kohlgruber Klemens
Obermann Hugo
Bayer Aktiengesellschaft
Truong Duc
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