Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Treatment with particular chemical
Reexamination Certificate
2006-08-29
2006-08-29
Griffin, Steven P. (Department: 1731)
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Treatment with particular chemical
C162S030100, C162S032000, C162S072000, C162S099000, C162S037000
Reexamination Certificate
active
07097738
ABSTRACT:
The invention relates to a process for producing pulp from a fibre-based raw material using, as the cooking reagent, a solvent mixture which is based on organic acids and also contains furfural. The method is applicable to herbaceous plants, in particular.
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Lehnen, et al, Furfural and Hydroxymethylfurfural as Byproducts of FORMACELL Pulping, 2001, Holzforschung, vol. 55, No. 2, pp. 199-204.
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Saake, B., Production of Dissolving and Paper- Grade Pulps by the Formacell Process, Meeting info.: International Symposium on Wood and Pulping Chemistry, Helsinki, Finland, Jun. 6-9, 1995, pp. 237-242, ABIPC abstract No. 6617370.
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Dunlop et al., “The Furans,” American Chemical Society Monograph Series, pp. 394-395, 1953.
Anttila Juha
Rousu Esa
Rousu Päivi
Rousu Pasi
Alston & Bird LLP
Chempolis Oy
Griffin Steven P.
Kinney Anna L.
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