Process for producing impact-resistant resins

Details Process for producing impact-resistant resins Process for producing impact-resistant resins

1983-03-08

1985-04-23

Schofer, Joseph L.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

525132, 525310, 524333, 524343, 524350, C08F 216, C08L 904, C08L 908, C08L 910

Patent

active

045131112

ABSTRACT:
In a process comprising adding an ethylenic monomer or monomer mixture (B) to a rubbery polymer (A) latex, emulsion-polymerizing it to produce a graft copolymer (C) latex, then adding an acidic substance or an electrolyte to said graft copolymer (C) latex to partially coagulate the latex, thereafter either first adding an ethylenic monomer or monomer mixture (D) and then adding a suspension polymerization stabilizer or simultaneously adding an ethylenic monomer or monomer mixture (D) and a suspension polymerization stabilizer, and carrying out suspension polymerization to obtain a graft copolymer (E) in the form of beads, a process for producing an impact-resistant resin wherein:

REFERENCES:
patent: 3625874 (1971-12-01), Cottman et al.
patent: 3763278 (1973-10-01), Griffith
patent: 4141932 (1979-02-01), Butler

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