Functionalized lignin and method of producing the same
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United States of America Patent
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Feb 27, 2018
Issued Date -
N/A
app pub date -
Oct 8, 2012
filing date -
Oct 7, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
In this study, commercially available softwood lignin was esterified with tall oil fatty acid (TOFA) and tested as barrier material in fiber-based packaging material. The modified lignin samples were applied with a bar coater forming an even coating on the paperboard substrate. A significant decrease in WVTR and OTR value was observed for paperboard coated with the modified lignin as well as pure TOFA used as a reference. In contrast to the TOFA coating, the modified lignin coatings exhibited a high and stable contact angle. The coating material did not affect the tensile strength of the paperboard. According to the results, the demonstration of the conversion of lignin into a value added product has been shown. Furthermore, the novel coating material shows promising properties for the development as sustainable barrier material in fiber-based packaging material to replace oil-placed barriers.
First Claim
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International Classification(s)
- C09J:ADHESIVES; ADHESIVE PROCESSES IN GENERAL
- C07G:COMPOUNDS OF UNKNOWN CONSTITUTION
- C08H:DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C09D:COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQ....
- D21H:PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED....
- C08L:COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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