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Furfural for formaldehyde-free wood glues!

Furfural is an efficient lignin-crosslinking agent and the following research demonstrates how it can replace formaldehyde in wood glues.

Abstract[1]:

Hot water extraction (HWE) of sugar maple dissolves ~15% of lignin in the extract which is subsequently subjected to acid hydrolysis. In this study, lignin will be separated from the extracts of HWE before and after acid hydrolysis and its potential to produce formaldehyde-free lignin-based adhesives will be evaluated.

Extracts are ultrafiltrated to remove low-molecular-weight compounds in permeate. The retentate (Insol fraction) contains a mixture of lignin and carbohydrates (mainly xylose-originated). Depending on the conditions of HWE, acid hydrolysis, and ultrafiltration, the Insol fraction varies in lignin-to-carbohydrate (L/C) ratio.

Acid hydrolysis and dehydration of xylose-based carbohydrates in the Insol fraction produce furfural, an efficient lignin-crosslinking agent. Furfural may be added to the Insol fraction in case of low xylose content (i.e. high L/C ratio). The resulting lignin-furfural product is analyzed for the condensation level and thermal properties by spectral methods (FTIR and NMR) and DSC to assess its potential as an adhesive.

Download:

{phocadownload view=file|id=55}

Reference:

[1] 245th ACS National Meeting and Exposition April 7-11, 2013, New Orleans, Louisiana

Also see:

Eco-friendly High Quality Resins (Wood Glues)

Furfuryl Alcohol: Turing Softwood into Hardwood

Furfural and the Rainforest

New Green Materials

  • Furfural
  • Wood
  • Resins...
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A highly durable & sustainable wood

'Kebonisation' is a wood modification process based on furfuryl alcohol, which results in a wood that is highly durable, sustainable with the aesthetics and performance of the best tropical hardwood.

Kebonisation is available with different finishes for different applications. Kebony wood can be used outdoors (e.g. cladding, roofing, windows, decking etc.) or indoors (e.g. flooring, furniture, surfaces, etc.).

Example:

"Kebony Maple For Your Table":

More Examples:

The images below are linked to their Pinterest boards:

Also see:

Furfuryl Alcohol: Turing Softwood into Hardwood

Furfural and the Rainforest

Eco-friendly High Quality Resins (Wood Glues)

Wood

Since 2001, DalinYebo provides knowhow:

To convert biomass to value added chemical products and applications that are used in industries such as steel, wood, pharmaceutical, automotive, agricultural chemicals, industrial chemicals, etc.

For the agri (biomass) processing, sugar, pulp&paper, etc. industries, we provide knowhow and technology to convert (residual) biomass to chemicals and energy.

For owners of biomass we offer technology and market access, creating investment opportunities in the cleantech space.

The essential technical challenge facing us, and the world in general, is the complete beneficiation of cellulosic material. We strive to provide viable and practical solution. Contact us to discuss the economic potential of your biomass.
  • Furfuryl Alcohol
  • Furfural and its many Byproducts
  • Wood...
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Pharmaceuticals from Furfural

Furfural is also a building block for compounds applied as pharmaceuticals, as insecticides, as microbicides, as fungicides, and for special polymers.

Example:

(2S)-phenyl-3-piperidone is an intermediate in the synthesis of compounds, which possess pharmacological activit. A group of researchers published in May 2014 their "efficient synthetic route towards tosyl-protected (2S)-phenyl-3-piperidone, a common intermediate for many drugs, has been developed in 5 steps with 54% yield from biomass derived furfural" [1]. The starting material for the synthesis was sun-dried rice straw, which was "collected from a rice straw farm in Jiangxi Province Fengcheng Area (China).

While at present the principal applications of furfural are seen to be as an extractant for lubricating oils, vegetable oils, and diesel fuel, as a fungicide, as a nematocide, and as the raw material for furfuryl alcohol to make foundry resins, other uses have been proven successfully on a multitude of fronts, and it is only a lack of research which prevents furfural and its derivatives from flooding the world in a stunning variety of different applications.[2]

Also see:

Other articles on dalinyebo.com that are related to 'Pharma'

Green Chemical Building Block

Map to Furfural and its many By-Products

Furfural and its many By-products

References:

[1] Teck Peng Loh, Peng-Fei Koh, Peng Wang and Jing-Mei Huang,  Biomass Derived Furfural-Based Facile Synthesis of Protected (2S)-phenyl-3-piperidone, a Common Intermediate for Many Drugs, Chem. Commun., 2014, Accepted Manuscript (Supporting information, for our clients: downloads)

[2] Introduction to the last chapter ("Odd Applications") of the appendices in Karl Joachim ZeitschThe Chemistry and Technology of Furfural and its Many By-Products; Sugar Series, Vol. 13; Elsevier: Amsterdam, 2000.

Since 2001, DalinYebo provides knowhow:

To convert biomass to value added chemical products and applications that are used in industries such as steel, wood, pharmaceutical, automotive, agricultural chemicals, industrial chemicals, etc.

For the agri (biomass) processing, sugar, pulp&paper, etc. industries, we provide knowhow and technology to convert (residual) biomass to chemicals and energy.

For owners of biomass we offer technology and market access, creating investment opportunities in the cleantech space.

The essential technical challenge facing us, and the world in general, is the complete beneficiation of cellulosic material. We strive to provide viable and practical solution. Contact us to discuss the economic potential of your biomass.
  • Furfural
  • Furfural and its many Byproducts
  • pharmaceutical...
Read more ...

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The only sustainable alternative to tropical hardwood

Furfuryl alcohol, which is made from bio-renewable furfural, is the main ingredient used for wood-modification processes like 'kebonisation', which convert softwoods in looks and properties that are similar to tropical hardwood. Originally designed to replace the toxic CCA process, furfurylation of wood offers non-toxic woods for playgrounds, floors, cladding, etc.

from Kebony.com: Developed in Norway, the Kebony technology is an environmentally friendly patented process, which enhances the properties of non-durable softwoods with a bio-based liquid.

As a result the wood’s cell structure is permanently modified adopting premium characteristics. Kebony is a highly durable, sustainable wood ..

.. with the aesthetics and performance of the best tropical hardwood, which requires minimum maintenance and brings low life cycle costs. Suitable for internal and external applications that demand high performance and great aesthetics, Kebony is available in clear and character grade pines. All Kebony woods acquire a silver patina after exposure to the elements.

Recognized as Technology Pioneer 2014 by the World Economic Forum and Global Cleantech Tech 100, Kebony has been embraced by leading architects and developers internationally, served through a global sales and distribution network.

Kebony: The New Wood

Also see:

Furfural and the Rainforest

New Green Materials

Eco-friendly High Quality Resins (Wood Glues)

Furfurly Alcohol

Since 2001, DalinYebo provides knowhow:

To convert biomass to value added chemical products and applications that are used in industries such as steel, wood, pharmaceutical, automotive, agricultural chemicals, industrial chemicals, etc.

For the agri (biomass) processing, sugar, pulp&paper, etc. industries, we provide knowhow and technology to convert (residual) biomass to chemicals and energy.

For owners of biomass we offer technology and market access, creating investment opportunities in the cleantech space.

The essential technical challenge facing us, and the world in general, is the complete beneficiation of cellulosic material. We strive to provide viable and practical solution. Contact us to discuss the economic potential of your biomass.
  • Wood
  • Furfuryl Alcohol...
Read more ...

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Overcoming the disadvantage of urea-formaldehyde treated wood

Furfural and urea react in an acid catalysed medium. The aldehyde group of furfural undergoes condensation with two urea and link the two urea substrate with the release of a water molecule to form a pure white furfural-urea resin (FUR).

A group of Indian scientists have developed an efficient synthesis of of untainted, superior furfural urea resin (FUR) [1]. Urea, a carbamide, is common organic chemical with versatile characteristics. It forms resins with aldehydes, most commonly formaldehyde, to produce urea-formaldehyde (UF) resins, which is used as a wood adhesive for many years, and is still the most widely used interior plywood and particleboard adhesive.

Urea is an attractive chemical for wood improvement because of its non-toxicity, cheapness and ease of use. However, formaldehyde-urea resins emit formaldehyde. Plywood interior furniture, or kitchen cupboards made from particle boards release formaldehyde, indoors! Formaldehyde is classified by the WHO as a known human carcinogen [2].

In order to reduce indoor formaldehyde levels, inferior glues with less formaldehyde have been used, since the 1980s, whilst research continued to find suitable alternatives.

The reaction of furfural and urea has been researched in the early 20th century. Until now, there were too many draw-backs to make it a viable process. This new synthesis, using a (natural!) zeolite catalyst, has eliminated them.

The new process claims the following:

Reduced reaction time.

Enhanced product quality.

The process is benign, environ friendly, efficient and extremely fast.

The natural zeolite catalyst can be recycled and reused, several times.

Reference:

[1] International Journal of Innovative Research in Science, Engineering and Technology (An ISO 3297: 2007 Certified Organization), Vol. 3, Issue 5, May 2014: Indian Natural Zeolites Catalyzed Urea Furfural Green Polymerization. (For our clients: Download publication and supporting information here)

[2] IARC Monographs on the Evaluation of Carcinogenic Risks to Humans Volume 88 (2006) Formaldehyde ..., WHO Press, 2006( English ).

Also see:

Furfuryl Alcohol: Turing Softwood into Hardwood

Furfural and the Rainforest

Furfurly Alcohol

New Green Materials

Since 2001, DalinYebo provides knowhow:

To convert biomass to value added chemical products and applications that are used in industries such as steel, wood, pharmaceutical, automotive, agricultural chemicals, industrial chemicals, etc.

For the agri (biomass) processing, sugar, pulp&paper, etc. industries, we provide knowhow and technology to convert (residual) biomass to chemicals and energy.

For owners of biomass we offer technology and market access, creating investment opportunities in the cleantech space.

The essential technical challenge facing us, and the world in general, is the complete beneficiation of cellulosic material. We strive to provide viable and practical solution. Contact us to discuss the economic potential of your biomass.
  • Furfural
  • Resins
  • Wood...
Read more ...
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