Process for making low fusion dispersion resins

Details Process for making low fusion dispersion resins Process for making low fusion dispersion resins

1981-12-30

1984-07-24

Schofer, Joseph L.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525309, C08L 3308

Patent

active

044618697

ABSTRACT:
There is disclosed a process for producing low energy vinyl dispersion resins which, in a plastisol, can be fused either at lower temperatures or in a shorter period of time than the normal dispersion grade resins presently employed. The new vinyl resin is characterized by being a bimodal resin, i.e., containing large particles and small particles of polymer in a predetermined size and amount. The small particles are a vinyl homopolymer or copolymer made by a regular emulsion polymerization procedure. The large particles are a vinyl copolymer made employing a seeded emulsion overpolymerization procedure wherein the seed is either a vinyl homopolymer or a vinyl copolymer. The final bimodal resin is obtained from a blend of the small and large particle latices by drying, such as spray drying, for example.

REFERENCES:
patent: 2857368 (1958-10-01), Ingraham et al.
patent: 3725367 (1973-04-01), Kemp
patent: 4331788 (1982-05-01), Arnal et al.

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