Process for surface sizing paper or paperboard

Details Process for surface sizing paper or paperboard Process for surface sizing paper or paperboard

1995-05-04

1997-01-07

Beck, Shrive

Coating processes

With post-treatment of coating or coating material

Solid treating member or material contacts coating

427391, 524275, 524276, 524277, 524475, 524487, B05D 312, B05D 302

Patent

active

055914896

ABSTRACT:
This invention provides a process for surface sizing paper or paperboard involving applying a surface sizing composition containing a mixture of starch and a surfactantless stable vinyl polymer microemulsion, followed by drying. The vinyl polymer microemulsion is prepared by emulsion polymerization of a styrene or styrene containing organic group with a C.sub.2 -C.sub.8 acrylic or methacrylic ester utilizing as the sole emulsifying agent a low molecular weight alkali soluble, acid containing copolymer.

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Proverb et al., "New Polymers For Alkaline Papermaking: Improved Paper Surfaces Through Size Press Applications", 1992, pp. 256-274.

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