Newspaper for offset printing

Details Newspaper for offset printing Newspaper for offset printing

2005-08-23

2005-08-23

Chin, Peter (Department: 1731)

Paper making and fiber liberation

Processes and products

With coating after drying

C162S175000

Reexamination Certificate

active

06932887

ABSTRACT:
A surface-treatment agent containing at least one type of processed starch selected from a) to c) as listed below is applied to a base paper of a newspaper so that a product of a B-type viscosity of the surface-treatment agent, measured under conditions of 10% concentration at 50° C. (rotor No. 1 at 60 rpm), and an application amount of the surface-treatment agent (both sides) is within a range of 2 to 15 cps·g/m2;a) Etherified starch, which is etherified by the compound defined in the general formula (1) given below:in-line-formulae description="In-line Formulae" end="lead"?(AO)nH  (1)in-line-formulae description="In-line Formulae" end="tail"?wherein A represents an ethylene group or propylene group, while n represents an integer of 1 to 15,b) Carboxylic acid esterified starch, which is esterified by monocarboxylic acid or dicarboxylic acid containing a linear, branched or cyclic alkyl group or alkenyl group having carbon atoms of 4 to 18, andc) Aldehyde starch.

REFERENCES:
patent: 5916420 (1999-06-01), Wurster et al.
patent: 6207258 (2001-03-01), Varnell

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