Gelled premixes based on heat-resistant polymers and polyvinyl c

Details Gelled premixes based on heat-resistant polymers and polyvinyl c Gelled premixes based on heat-resistant polymers and polyvinyl c

1991-11-18

1994-01-25

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524312, 524377, 524378, 524398, C08K 520

Patent

active

052816427

ABSTRACT:
Gelled premixes based on heat-resistant polymers whose Vicat softening point is higher than 100.degree. C., containing an impact strength improver and a lubricant for polyvinyl chloride and polyvinyl chloride-based compositions containing such gelled premixes. The incorporation of heat-resistant polymers in the form of gelled premixes results in perfectly homogeneous polyvinyl chloride-based compositions which are converted without any problems at the usual temperatures for processing polyvinyl chloride into shaped articles with improved heat resistance.

REFERENCES:
patent: 2646417 (1953-07-01), Jennings
patent: 4169195 (1979-09-01), Rinehart
patent: 4246374 (1981-01-01), Kopchik
patent: 4255322 (1981-03-01), Kopchik
patent: 4504623 (1985-03-01), Heuschen et al.
patent: 4595727 (1986-06-01), Doak

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