Treatment of Fibres to Endure Processing

Jari Räsänen (Inventor), Tapani Penttinen (Inventor), Ali Harlin (Inventor), Jaakko Hiltunen (Inventor), Hanne Wikberg (Inventor), Tekla Tammelin (Inventor)

Research output: PatentResearch

Abstract

The invention relates to a method of treating chemical pulp fibres by a polymerizing hydroxy acid, the fibres thus obtained and the products refined from them. In the method, the hydroxy acid reacts with the reactive groups of the fibres in the presence of a catalyst, forming ester bonds. The following units of the same hydroxy acid are oligomerized and/or polymerized to these grafted acid residues. The fibres thus treated and the products refined thereof endure better processing stages that include drawing and stretching than untreated fibres.

Original languageEnglish
Patent numberUS9079978B2
IPCC08B 3/20
Priority date18/03/10
Publication statusPublished - 14 Jul 2015
MoE publication typeNot Eligible

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Hydroxy Acids
Fibers
Processing
Chemical pulp
Patents and inventions
Stretching
Esters
Catalysts
Acids

Cite this

Räsänen, J., Penttinen, T., Harlin, A., Hiltunen, J., Wikberg, H., & Tammelin, T. (2015). IPC No. C08B 3/20. Treatment of Fibres to Endure Processing. (Patent No. US9079978B2).
Räsänen, Jari (Inventor) ; Penttinen, Tapani (Inventor) ; Harlin, Ali (Inventor) ; Hiltunen, Jaakko (Inventor) ; Wikberg, Hanne (Inventor) ; Tammelin, Tekla (Inventor). / Treatment of Fibres to Endure Processing. IPC No.: C08B 3/20. Patent No.: US9079978B2.
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Räsänen, J, Penttinen, T, Harlin, A, Hiltunen, J, Wikberg, H & Tammelin, T 2015, Treatment of Fibres to Endure Processing, Patent No. US9079978B2, IPC No. C08B 3/20.

Treatment of Fibres to Endure Processing. / Räsänen, Jari (Inventor); Penttinen, Tapani (Inventor); Harlin, Ali (Inventor); Hiltunen, Jaakko (Inventor); Wikberg, Hanne (Inventor); Tammelin, Tekla (Inventor).

IPC No.: C08B 3/20. Patent No.: US9079978B2.

Research output: PatentResearch

TY - PAT

T1 - Treatment of Fibres to Endure Processing

AU - Räsänen, Jari

AU - Penttinen, Tapani

AU - Harlin, Ali

AU - Hiltunen, Jaakko

AU - Wikberg, Hanne

AU - Tammelin, Tekla

PY - 2015/7/14

Y1 - 2015/7/14

N2 - The invention relates to a method of treating chemical pulp fibres by a polymerizing hydroxy acid, the fibres thus obtained and the products refined from them. In the method, the hydroxy acid reacts with the reactive groups of the fibres in the presence of a catalyst, forming ester bonds. The following units of the same hydroxy acid are oligomerized and/or polymerized to these grafted acid residues. The fibres thus treated and the products refined thereof endure better processing stages that include drawing and stretching than untreated fibres.

AB - The invention relates to a method of treating chemical pulp fibres by a polymerizing hydroxy acid, the fibres thus obtained and the products refined from them. In the method, the hydroxy acid reacts with the reactive groups of the fibres in the presence of a catalyst, forming ester bonds. The following units of the same hydroxy acid are oligomerized and/or polymerized to these grafted acid residues. The fibres thus treated and the products refined thereof endure better processing stages that include drawing and stretching than untreated fibres.

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M3 - Patent

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Räsänen J, Penttinen T, Harlin A, Hiltunen J, Wikberg H, Tammelin T, inventors. Treatment of Fibres to Endure Processing. C08B 3/20. 2015 Jul 14.