Organic slurry and method for manufacture thereof
An organic slurry for use in wood-based composites is described herein. In one aspect, the organic slurry may include water, a lignin material insoluble in the water, such as dewatered kraft lignin, and a defoamer. During manufacturing, the water, lignin material and defoamer may be combined and mixed together in a vessel to produce the organic slurry. In one aspect, the defoamer may include a water-based defoamer, a silicone-based defoamer, a silicone-free defoamer, an oil-based defoamer, a polymer-based defoamer, or mixtures thereof. The organic slurry may have a pH less than neutral.
1. An organic slurry, comprising:
water;
a dewatered, kraft lignin insoluble in the water; and
a defoamer.
2. The organic slurry of claim 1 , wherein the defoamer comprises a water-based defoamer, a silicone-based defoamer, a silicone-free defoamer, an oil-based defoamer, a polymer-based defoamer, or mixtures thereof.
3. The organic slurry of claim 1 , wherein the slurry has a pH less than neutral.
4. The organic slurry of claim 1 , further comprising a pH modifier.
5. The organic slurry of claim 4 , wherein the pH modifier comprises a mono-functional amine, a multi-functional amine, an alkali metal salt, an alkaline earth metal salt or combinations thereof.
6. The organic slurry of claim 4 , wherein the slurry has a pH less than neutral.
7. The organic slurry of claim 4 , wherein the pH modifier is sodium carbonate.
8. The organic slurry of claim 4 , wherein the pH modifier is present in an amount of up to 1 wt % of the organic slurry.