Coated fillers having silicic acid for heat-sensitive recording

Details Coated fillers having silicic acid for heat-sensitive recording Coated fillers having silicic acid for heat-sensitive recording

1992-10-06

1995-03-28

Ryan, Patrick J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428404, 428331, B32B 900

Patent

active

054015685

ABSTRACT:
A particulate composition to be used as a filling material in the heat-sensitive layer of a heat-sensitive recording material is described. The material is characterized by the fact that it occurs as fine-grained white pigments which are predominantly bound to amorphous precipitated silicic acid, whereby the amorphous precipitated silicic acid either (a) is wrapped in layers around the fine-grained white pigment or (b) occurs as fine particles that are bound to the fine-grained white pigment in a punctiform manner and whereby the water content of the material (b) is 1 to 10 percent by weight, preferably 2 to 8 percent by weight.

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patent: 5045523 (1991-09-01), Funae
patent: 5124306 (1992-06-01), Yamamoto

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