Title:
HYDROPHOBIC LIGNOCELLULOSIC MATERIAL AND PROCESS THEREFOR
Document Type and Number:
WIPO Patent Application WO/2011/147027
Kind Code:
A3
Abstract:
A method is conceived for producing hydrophobic lignocellulosics based on the graft copolymerisation of vinyl-type monomers onto the lignocellulosic backbone initiated by a redox couple initiator in aqueous medium. The green modification process can be carried out on any lignocellulosic material, for example, chemical, chemi-thermo-mechanical or thermo-mechanical pulps, bleached or unbleached. The technology disclosed in this invention yields individual lignocellulosic entities, for instance, hydrophobic pulp fibres, that can be used in combination with other fibres or polymers to produce nonwoven fibrous materials or composites. A significant aspect of the invention is that the modified lignocellulosic material possesses an efficient hydrophobic barrier and minimum interfacial energy to generate optimum adhesion when introduced to polymer resins. Hydrophobic lignocellulosics can have wide applications in products requiring high dimensional stability and excellent adhesion as in fibre-based packaging, decorative laminates, furniture and non-structural biocomposites.
Inventors:
HAMAD WADOOD Y (CA)
HAYEK ALI (CA)
HAYEK ALI (CA)
Application Number:
PCT/CA2011/000622
Publication Date:
January 26, 2012
Filing Date:
May 25, 2011
Export Citation:
Assignee:
FPINNOVATIONS (CA)
HAMAD WADOOD Y (CA)
HAYEK ALI (CA)
HAMAD WADOOD Y (CA)
HAYEK ALI (CA)
International Classes:
D21H17/33; C08F251/00; D06M14/04; D21H17/35
Foreign References:
| GB2260138A | 1993-04-07 |
Other References:
ROZMAN, H.D. ET AL.: "IMPROVEMENTS OF FIBERBOARD PROPERTIES THROUGH FIBER ACTIVATION AND SUBSEQUENT COPOLYMERIZATION WITH VINYL MONOMER", JOURNAL OF APPLIED POLYMER SCIENCE, vol. 54, no. 2, 10 October 1994 (1994-10-10), pages 191 - 200, XP000445478
KOKTA, B. V. ET AL.: "The Xanthate Method of Grafting. X. Grafting of Acrylamide onto Very-High-Yield Chemithermomechanical Birch and Aspen Pulps", JOURNAL OF APPLIED POLYMER SCIENCE, vol. 34, no. 7, 20 November 1987 (1987-11-20), pages 2517 - 2526
KOKTA, B. V. ET AL.: "The Xanthate Method of Grafting. X. Grafting of Acrylamide onto Very-High-Yield Chemithermomechanical Birch and Aspen Pulps", JOURNAL OF APPLIED POLYMER SCIENCE, vol. 34, no. 7, 20 November 1987 (1987-11-20), pages 2517 - 2526
Attorney, Agent or Firm:
NORTON ROSE OR LLP/S.E.N.C.R.L., s.r.l. (1 Place Ville MarieMontréal, Québec H3B 1R1, CA)
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