Finish composition for coating and protecting a reinforcing subs

Details Finish composition for coating and protecting a reinforcing subs Finish composition for coating and protecting a reinforcing subs

1994-05-31

1995-02-14

Marquis, Melvyn I.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428523, 523202, 523217, 524458, B32B 900

Patent

active

053894405

ABSTRACT:
An aqueous emulsion for use in forming a weight average sizing coating for treating a surface of a substrate. The emulsion comprises at least one polyolefin having a molecular weight greater than 10,000; an acid material selected from the group consisting of saturated fatty acids, unsaturated fatty acids which do not includ any hydroxyl groups and mixtures thereof; at least one base; optionally, an emulsifying agent; and a sufficient amount of water to form an aqueous phase emulsion comprising from about 10-50% of solid materials. The emulsion is formed by combining the polyolefin with the fatty acid at a temperature higher than the melting point of the polyolefin to form a first mixture, adding to the first mixture a sufficient amount of base to neutralize the polyolefin and the fatty acid together with the water and optionally the emulsifying agent to form a second mixture; stirring the second mixture at an elevated pressure and at a temperature above the melting point of the polyolefin and subsequently cooling the mixture to a temperature below the melting point of the polyolefin. The emulsion is particularly useful as a component of a sizing for coating and protecting glass fibers for reinforcing polymeric materials.

REFERENCES:
patent: 3655353 (1972-04-01), Nalley et al.
patent: 3814715 (1974-06-01), Nalley et al.
patent: 4240944 (1980-12-01), Temple
patent: 4283322 (1981-08-01), Temple
Brandrup, J., "Polymer Handbook, Second Edition", John Wiley & Sons, New York, 1975, p. IV-8.
Chem Abs. 98(4) 17601t, Munteanu et al. (1983).

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