Plastisol resins having improved clarity

Details Plastisol resins having improved clarity Plastisol resins having improved clarity

1978-09-01

1980-05-20

Schofer, Joseph L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 296E, C08L 9100, C08L 2706

Patent

active

042038790

ABSTRACT:
A method for improving the clarity of plastisol resin films includes the steps of polymerizing vinyl chloride alone or in the presence of a copolymerizable monomer to yield a latex, and dissolving a nonionic emulsifier in the latex prior to spray drying. The resulting mixture is thereafter spray dried to yield a resin which in turn can be mixed with a plasticizer to form a paste and spread as a thin layer to be fused into a film with heat. Alternatively, the nonionic emulsifier can be added, after spray drying, during preparation of the paste by mixing the emulsifier and plasticizer followed by addition of the resin. The nonionic emulsifiers of the present invention have the formula R--O--(CH.sub.2 CH.sub.2 --O).sub.n H wherein R is selected from the group consisting of fatty acids, polyol fatty acid esters, fatty alcohols, fatty amines, fatty amides, polypropylene oxide and alkylated phenol, and n is an integer ranging from 1 to about 50.

REFERENCES:
patent: 2771457 (1956-11-01), Barnes et al.
patent: 2840549 (1958-06-01), McNulty
patent: 3640935 (1972-02-01), Abriss
patent: 3755225 (1973-08-01), Pierce et al.
patent: 3882195 (1975-05-01), Daniels et al.
patent: 3950318 (1976-04-01), Park et al.

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