Patent ID: 11926569
Assignee: SIERRACRETE LLC
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 19:
20. A process for making a composite cellulosic product, comprising:
contacting a plurality of cellulosic substrates with a binder to produce a mixture comprising 0.5 wt % to 5 wt % of the plurality of cellulosic substrates, based on a total weight of the mixture, wherein the plurality of cellulosic substrates comprises cellulosic substrates derived from a lignin-containing material subjected to a lignin extraction process, and wherein the binder comprises:
magnesium oxide,
water, and
magnesium chloride, wherein a weight ratio of the magnesium oxide to the magnesium chloride in the binder is at least 2.2:1 to 8.5:1, and wherein a weight ratio of the water to the magnesium chloride in the binder is about 1.5:1 to about 4.5:1; and

allowing the mixture to set for a time period sufficient to allow the binder to at least partially cure to produce the composite cellulosic product.