Low dust preservative powders for lignocellulosic composites

Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – Utilizing diverse solid particles

Reexamination Certificate

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C264S241000, C252S607000, C252S385000, C106S015050

Reexamination Certificate

active

10909053

ABSTRACT:
The manufacture of zinc borate and calcium borate powders in a water slurry and drying those powders in a controlled manner such as to leave a desired residual of moisture content uniformly dispersed throughout the product produces a low dust, flowable material. This low dust material results in environmental and economic benefits to users of these preservative borates. The preferred amount of residual moisture is from 2 to 10 percent.

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