4.22.2019

UltraWood 3: A new 2 step method

Ultrawood 3 is a direct replacement protocol for the Hu patented "super wood" protocol.  In his patent first lignin needs to be removed from natural wood and then the wood is pressed under elevated temperature and pressure.  In this iteration presented here, lignin is not extracted from the wood.  The natural wood is simply (with or without first extractives [non-lignin] removal by the likes of water, ethanol, chloroform, acetone, oxalic acid, hydroxide, etc) to infuse the wood with alkaline hydrogen peroxide (or acidic or neutral but preferably alkaline), preferably ph 11.5, using any method.  Some example methods could be boiling, soaking, freezing, vacuum or pressure, etc.  Then when the wood is impregnated with alkaline hydrogen peroxide, the wood is pressed under elevated pressure and/or elevated temperature, preferably both.  Fenton reagents can be added at any point if desired but likely not effective.  Keeping the wood moist while pressing for some period of time is preferable to achieve full reaction.  Also preferably the chemical soaked wood is preheated to the proper reaction temperature before significant pressing.  What this does is degrade the lignin during pressing into smaller molecules thus allowing more densification of the wood than simple wet pressing.  This does not infringe on the hu patents because lignin is not removed from the natural wood prior to compression.

This process can also be done using the hydroxide/sulfite process like hu, hydroxide/urea process, cellulose acetate producing process, gaseous oxygen process, etc. or any other process that would modify one or more of the following; lignin, hemicellulose, or cellulose.

In addition to or alternatively another couple methods can be employed at any part in the process described in any article on ultrawood.  One is gaseous oxygen treatment of the wood.  This can include other gasses to improve the reaction like nitrous oxide or water vapor (ie:steam).  This would break some of the bonds of lignin but again will not infringe on the hu patent since lignin is not bieng removed from the natural wood.  Another option is enzymatic or biological breakdown of the lignin using bacteria and/or fungus and/or enzymes derived from such.  This can be apllied to any method including the Hu method yet will not infringe on the Hu patent because the removal of lignin via this is a biological or biochemical process, not simply a chemical process that the Hu patent necessitates.

Microwaves or any other radiation of any type like lasers or any other type can also assist or replace these methods for partial or full breakdown of lignin and/or hemicellulose and/or cellulose.

lignin breakdown by alkaline hydrogen peroxide
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3443053/

fenton iron not effective higher temperature better
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4350612/#!po=54.4444

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