12-11-2020 дата публикации
Номер: US20200354895A1
Принадлежит:
The disclosure relates to a coating composition that can be applied to a substrate, especially a cellulose substrate. A layer of the coating composition applied to the substrate provides an excellent ink receptive layer and can be used as a coating on paper. The disclosure also relates to aqueous compositions and method for applying the layer of the coating composition onto the substrate. 1. A substrate , wherein at least a portion of the substrate is coated with a layer of a coating composition , the coating composition comprising;i) water insoluble α-(1,3→glucan) polymer having 90% or greater α-1,3-glycosidic linkages, less than 1% by weight of α-1,3,6-glycosidic branch points and a number average degree of polymerization in the range of from 55 to 10,000; andii) at least one pigment, at least one binder, or a combination thereof.2. The substrate of wherein the substrate is a cellulose substrate claim 1 , a polymer claim 1 , paper claim 1 , a textile claim 1 , paperboard claim 1 , cardboard claim 1 , or corrugated board.3. The substrate of claim 1 , wherein the layer of coating composition comprises an average pore size volume in the range of from 0.1 to 0.50 milliliters/gram.4. The substrate of claim 1 , wherein the binder is polyvinyl alcohol claim 1 , polyvinyl acetate claim 1 , partially saponified polyvinyl acetate claim 1 , silanol-modified polyvinyl alcohol claim 1 , polyurethane claim 1 , starch claim 1 , corn dextrin claim 1 , carboxy methyl cellulose claim 1 , cellulose ethers claim 1 , hydroxyethyl cellulose claim 1 , hydroxypropyl cellulose claim 1 , ethylhydroxyethyl cellulose claim 1 , methyl cellulose claim 1 , alginates claim 1 , sodium alginate claim 1 , xanthan claim 1 , carrageenan claim 1 , casein claim 1 , soy protein claim 1 , guar gums claim 1 , synthetic polymers claim 1 , styrene butadiene latex claim 1 , styrene acrylate latex claim 1 , or a combination thereof.5. The substrate of claim 1 , wherein the coating composition comprises in the ...
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