The brightness may be at least 30 as measured by the Brightness Test.
High brightness kaolin pigments and methods of making high brightness kaolin pigments are provided.
The compounds of the invention provide high whiteness at low application levels.
However, D65 brightness should not be confused with ISO brightness which closely approximates the brightness of papers viewed under indoor conditions.
The object is to produce a calcium carbonate particle having a high degree of whiteness and a small apparent specific gravity from a limestone raw material having a low degree of whiteness.
The duration of the drying period determines the degree of brilliance and whiteness of the shot.
The method of the invention provides an ISO brightness exceeding 90 % without chlorine chemicals.
The present invention relates to the preparation of a fluoropolymer exhibiting improved whiteness upon fabrication.
Also provided are blended high brightness kaolins having increased opacity properties.
In accordance with the present invention, superior brightness can be attained without additional bleaching process.
Made of bull bone powder, its high levels of whiteness and translucency would be noticeable.
The resulting pulps exhibit a high index of whiteness and a degree of polymerisation close to unbleached pulps.
It is preferable that the opacifying agent is a white opacifying agent having a whiteness degree of 65 to 100%.
A composition comprising 10 to 50 weight % wood pulp fiber and 45 to 85 wt % thermoplastic polymer wherein the composition has a brightness of at least 20 as measured by the Brightness Test.
Disclosed is printing paper which has high whiteness degree and high opacity at the same time.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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