Aqueous dispersions of vinylidene chloride resins

Details Aqueous dispersions of vinylidene chloride resins Aqueous dispersions of vinylidene chloride resins

1981-09-14

1985-08-13

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...

524831, C08L 3306

Patent

active

045351201

ABSTRACT:
An aqueous dispersion of vinylidene chloride resin which, when coated onto a synthetic resinous film substrate, has the combined properties of: (1) good adhesion to the substrate; (2) good adhesion of a printing ink to the coating; (3) satisfactory barrier to gases (especially oxygen) and water vapor; and (4) a high resistance to boiling water treatment. The vinylidene chloride resin must also have polymerized therein methyl methacrylate, methacrylonitrile and methacrylic acid. A total amount of methacrylic acid must be between 1.times.10.sup.-4 and 3.times.10.sup.-4 moles of methacrylic acid per gram of polymer solids. A portion of the total amount of methacrylic acid exists in a form titratable with a 1/20 Normal aqueous solution of sodium hydroxide. The portion must be the less of (a) about 1.3.times.10.sup.-4 moles per gram of polymer solids or (b) about 60 percent of the total amount.

REFERENCES:
patent: 3108017 (1963-10-01), Messwarb et al.
patent: 3714106 (1973-01-01), Smith et al.
patent: 3879359 (1975-04-01), Hinkamp et al.

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