Polyester-starch sized paper, sizing composition, and process th

Details Polyester-starch sized paper, sizing composition, and process th Polyester-starch sized paper, sizing composition, and process th

1978-05-22

1980-07-01

Lusignan, Michael R.

Coating processes

With post-treatment of coating or coating material

Solid treating member or material contacts coating

427364, 427391, 528287, 260 292E, 525437, B05D 302, B05D 312

Patent

active

042106850

ABSTRACT:
There is disclosed a cellulosic material such as paper or paperboard surface-sized with an aqueous dispersion of a combination of degraded starch or a starch derivative and a branched-chain, water-dispersible polyester condensation product. Said polyester is derived from the reaction of a dicarboxylic reactant, a diol or polyoxyalkylene glycol, and a phosphorus acid reactant wherein said polyester has a carboxylic acid number of about 5 to about 15 and an average molecular weight of about 4,000 to about 11,000. Mixtures of said starch and said polyester when used to surface-size cellulosic materials impart water resistance thereto.

REFERENCES:
patent: 3102064 (1963-08-01), Wurzburg et al.
patent: 3413139 (1968-11-01), Rasmussen et al.
patent: 4098741 (1978-07-01), Login
patent: 4111816 (1978-09-01), Login

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