Title:
MANUFACTURE OF IMPACT MODIFYING AGENT FOR POLYVINYL CHLORIDE
Document Type and Number:
Japanese Patent JPS56109240
Kind Code:
A
Abstract:
Polymers useful as impact modifiers for poly(vinylchloride) are prepared by grafting, in a melt reaction, monomer comprising at least 50% by weight methyl methacrylate to one or more polymers of ethylene, not including high density polyethylene. A preferred extruder process for preparing the modifiers is disclosed. The invention also extends to blends of poly(vinylchloride) and impact modifing polymer of monomer comprising at least 50% by weight of methyl methacrylate grafted onto the ethylene polymer(s) and to the preferred extruder reactor having a melt zone (27) separate zone (12) for monomer addition, separate and downstream therefrom, a zone (20) for initiator addition, separate and downstream therefrom, a reaction zone (22) and separate and downstream therefrom a devolatilisation zone (23). The modifiers of the invention.
Inventors:
UIRIAMU HENRII SUTAASU
Application Number:
JP731881A
Publication Date:
August 29, 1981
Filing Date:
January 22, 1981
Export Citation:
Assignee:
ROHM & HAAS
International Classes:
C08L27/00; C08F255/00; C08L1/00; C08L23/00; C08L27/06; C08L51/00; C08L51/02; C08L51/06; C08L101/00; (IPC1-7): C08L27/06