Controlled gloss pigment system for coating printing papers at p

Details Controlled gloss pigment system for coating printing papers at p Controlled gloss pigment system for coating printing papers at p

1978-04-04

1980-04-15

Lusignan, Michael R.

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

260 174ST, 427361, 427391, 428530, 525157, 525156, 525164, B05D 302, B05D 312, B32B 2710, B32B 2742

Patent

active

041984714

ABSTRACT:
The combination of a thermoplastic polymer and a thermosetting polymer, provides a pigment system for producing coated printing papers. The thermoplastic polymer and thermosetting polymer, suspended in well-known coating binders and carriers, is applied to the web substrate on a standard paper machine. The amount of thermoset, preferably at least about 25% by weight of the pigment solids, improves ink receptivity and allows adjustable control of finished paper gloss. The amount of thermoset added to the pigment system is limited, however, preferably below about 75% by weight of the pigment solids, so that the finished printing paper obtains a Gardner 75.degree. gloss of at least about 40, at calendering pressures of less than 500 PLI.

REFERENCES:
patent: 3028258 (1962-04-01), Rice
patent: 3281267 (1966-10-01), Rice
patent: 3578493 (1971-05-01), Smith
patent: 3779800 (1973-12-01), Heiser
patent: 3853594 (1974-12-01), Moroff et al.

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