Thermally reactive thermoplastic intermediate product and method of manufacturing thereof

Patent metadata

Field	Value
Publication number	US-2016297970-A1
Application number	US-201314442186-A
Country	US
Kind code	A1
Filing date	Nov 7, 2013
Priority date	Nov 13, 2012
Publication date	Oct 13, 2016
Grant date	—

Abstract

The present disclosure relates to a thermally reactive thermoplastic intermediate product, in the form of a shaped body, wherein the intermediate comprises a composition, wherein the composition comprises a purified or optionally unpurified softwood lignin and at least a first additive.

First claim

1 . A thermally reactive thermoplastic intermediate product, in the form of a shaped body, wherein the intermediate comprises a composition,
wherein the composition comprises a purified or an unpurified softwood lignin and at least one additive.

2 . (canceled)

3 . The intermediate product as claimed in claim 1 , wherein the at least one additive in said composition is a lignin solvent.

4 . The intermediate product as claimed in claim 3 , wherein the lignin solvent is an aprotic polar solvent, an aliphatic amide, dimethylformamide (DMF), dimethylacetamide (DMAc), a tertiary amine oxide, N-methylmorpholine-N-oxide (NMMO), dimethylsulfoxid (DMSO), ethylene glycol, di-ethylene glycol or ionic liquids or any combination of said solvents and liquids.

5 . The intermediate product as claimed in claim 4 , wherein the lignin solvent is a low-molecular-weight poly ethylene glycol (PEG) having a molecular weight between 150 to 20,000 g/mol.

6 . The intermediate product as claimed in claim 1 , wherein said composition further comprises at least a second additive.

7 . The intermediate product as claimed in claim 6 , wherein said composition further comprises a third additive.

8 . The intermediate product as claimed in claim 6 , wherein the second additive is a reactive blocking agent.

9 . The intermediate product as claimed in claim 6 , wherein the second additive is an alignment agent.

10 . The intermediate product as claimed in claim 7 , wherein the second additive is a reactive blocking reagent and the third additive is an alignment agent.

11 . The intermediate product as claimed in claim 1 , wherein at least 1% of free hydroxyl groups present in the purified softwood lignin remain unaffected.

12 . The intermediate product as claimed in claim 1 , wherein the product is re-meltable.

13 . A method for producing a thermoplastic intermediate product being thermally reactive, comprising the steps of:
providing a purified softwood lignin as a dry powder or an unpurified softwood lignin as a powder; adding at least a first additive to the softwood lignin, such that it substantially remains in a solid state; wherein the first additive is a lignin solvent, capable of opening up the lignin structure.

14 . (canceled)

15 . The method as claimed in claim 13 , wherein the lignin solvent is an aprotic polar solvent, an aliphatic amide, dimethylformamide (DMF), dimethylacetamide (DMAc), a tertiary amine oxide, N methylmorpholine-N-oxide (NMMO), dimethylsulfoxid (DMSO), ethylene glycol, di-ethylene glycolor ionic liquids or any combination of said solvents and liquids.

16 . The method as claimed in claim 15 , wherein the lignin solvent is low-molecular-weight poly ethylene glycol (PEG) having a molecular weight between 150 to 20,000 g/mol.

17 . The method as claimed in claim 13 , further comprising adding at least a second additive.

18 . The method as claimed in claim 17 , further comprising adding at least a third additive.

19 . The method as claimed in claim 17 , wherein the second additive is a reactive blocking agent.

20 . The method as claimed in claim 17 , wherein the second additive as an alignment agent.

21 . The method as claimed in claim 18 , wherein the second additive is said reactive blocking agent, and wherein the third additive is said alignment agent.

22 . The method as claimed in claim 17 , wherein said second additive is added after a treatment period from the addition of said first additive.

23 . The method as claimed in claim 19 , wherein said reactive blocking agent is able to react in-situ with the lignin during melt-extrusion.

24 . A thermally reactive thermoplastic intermediate product obtainable by the method as claimed in claim 13 .

25 . (canceled)

26 . (canceled)

27 . (canceled)

28 . The intermediate product as claimed in claim 1 , wherein at least 50% of free hydroxyl groups present in the purified softwood lignin remain unaffected.

29 . The intermediate product as claimed in claim 1 , wherein at least 95% of free hydroxyl groups present in the purified softwood lignin remain unaffected.

Assignees

• Stora Enso Oyj

Inventors

• Garoff Niklas
• Areskogh Dimitri
• Gellerstedt Goran
• Walter Stephen
• Manvi Pavan Kumar
• Seide Gunnar
• Gries Thomas

Classifications

• C08G18/6492

  Lignin containing materials; Wood resins; Wood tars; Derivatives thereof · CPC title

• D01D5/08

  Melt spinning methods {(D01D5/0023 takes precedence)} · CPC title

• D01F9/17 Primary

  from lignin · CPC title

• D01F1/10

  Other agents for modifying properties · CPC title

• C25C3/125

  based on carbon · CPC title