Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Binder compositions comprising lignin derivatives

A technology of composition and adhesive, applied in the field of composition of natural lignin derivatives, can solve the problems of reduced method efficiency, loss of resin efficiency, premature polymerization, etc.

Active Publication Date: 2013-03-06
SUZANO CANADA INC
View PDF10 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In many manufacturing methods, MDI suffers from significant premature polymerization (pre-cure), leading to a significant loss of resin efficiency and consequently more resin consumption
It is estimated that as much as 10% of the MDI is lost in pre-cure, resulting in increased cost and reduced process efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Binder compositions comprising lignin derivatives
  • Binder compositions comprising lignin derivatives
  • Binder compositions comprising lignin derivatives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Preparation of MDI / Lignin

[0085] Two batches of 10 g of powdered lignin derivative were dissolved in two aliquots of 50 g of acetone to form a 20% wt. / wt. solution. Then 100g of MDI (Rubinate 1780) was mixed into one solution and 200g of MDI (Rubinate 1780) into the other. Both solutions were subsequently vacuum distilled at room temperature for 2 hours. This removes 95% of the acetone, which can be stored and reused. Both compositions were stored for several days and their viscosities were determined (Table 1). The results indicated that the mixture was not completely stable but not so unstable that it could not be used.

[0086] Table 1. Viscosity and stability of MDI-lignin resins

[0087]

[0088] In addition, 5 g and 10 g of hardwood lignin powder were directly mixed with 100 g of MDI resin (Rubinate 1780). The suspension appears stable for at least 24 hours, but separation or precipitation occurs after prolonged periods.

[0089] A sample of a 5% MDI-...

Embodiment 2

[0108] Conduct further tests to compare lignin-phenolic resin (LPF) and commercially available phenolic resin (PF) as OSB surface layer binder for OSB panel performance and evaluate the replacement of OSB core with 30%, 40% and 50% LPF resin Viability of commercially available pMDI resin in the layer.

[0109] OSB board manufacturing

[0110]

[0111]

[0112] Wood Type: Poplar

[0113] OSB shavings: sieved and dried to 2% moisture content

[0114] Target felt moisture content: 6%-7%

[0115] Surface / core ratio: 50 / 50

[0116] Plate Thickness: 7 / 16”

[0117] Board Dimensions: 4’x8’x7 / 16”

[0118] Target Density: 38lb / ft 3

[0119] Top coat resin: PF or lignin-PF at 3% solid addition rate (heat to 30°C before mixing)

[0120] Core resin: pMDI / lignin-PF (100:0, 70:30x1.5, 60:40x1.5 and 50:50x1.5)

[0121] E-wax: EW58S at 1% solids addition rate (dilute 58% solids to 50% solids with water)

[0122] Pressurization temperature: 215°C

[0123] Pressurization cycle tim...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

The present disclosure provides a binder composition comprising a diisocyanate and a derivative of native lignin. The derivative of native lignin is treated such that it is characterized by the aliphatic hydroxy content. The binder may be used in an adhesive system comprising: a. a resin comprising at least about 30% by weight of phenol-formaldehyde resin and at least about 30% by weight of derivative of native lignin; and b. an isocyanate based binder.

Description

technical field [0001] The present invention relates to natural lignin derivatives recovered from lignocellulosic raw materials, and their industrial applications. More particularly, the present invention relates to compositions, uses and methods of using natural lignin derivatives. Background technique [0002] Native lignin is a naturally occurring amorphous complex cross-linked organic macromolecule comprising an integral component of all plant biomass. The chemical structure of lignin is irregular in the sense that the different structural units (for example, phenylpropane units) are not connected to each other in any regular order. Natural lignin is known to contain many types of monolignol (monolignol) monomers (trans-coniferyl alcohol and trans-sinapyl alcohol) that are methoxylated to varying degrees and a third non-methoxylated monolignol Sterol (trans-p-coumaryl alcohol). Various combinations of these monohydric ligninols include three structural blocks of the p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09J197/00B27N3/04B27N3/08C08L97/00
CPCC09J161/06C08L97/00C09J197/005C08L61/06C08L97/005B27N3/04D21J1/04B29C70/12B29C70/34B29K2075/00B29K2105/12B29K2311/14C08G18/4081C08G18/7671C09J175/04
Inventor 亚历克斯·柏林
Owner SUZANO CANADA INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com