Classifications

• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
  • C08H1/00—Macromolecular products derived from proteins
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
  • C09J161/04—Condensation polymers of aldehydes or ketones with phenols only
  • C09J161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
  • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
  • C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
  • C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L89/00—Compositions of proteins; Compositions of derivatives thereof
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L97/00—Compositions of lignin-containing materials
  • C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J189/00—Adhesives based on proteins; Adhesives based on derivatives thereof
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
  • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
  • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
  • B27N3/002—Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
  • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
  • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
  • B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
  • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
  • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
  • B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J2205/00—Foams characterised by their properties
  • C08J2205/10—Rigid foams
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
  • C08J2361/04—Condensation polymers of aldehydes or ketones with phenols only
  • C08J2361/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
  • C08J2361/08—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols with monohydric phenols
  • C08J2361/10—Phenol-formaldehyde condensates
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J2489/00—Characterised by the use of proteins; Derivatives thereof
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K5/00—Use of organic ingredients
  • C08K5/04—Oxygen-containing compounds
  • C08K5/10—Esters; Ether-esters
  • C08K5/101—Esters; Ether-esters of monocarboxylic acids
  • C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K5/00—Use of organic ingredients
  • C08K5/16—Nitrogen-containing compounds
  • C08K5/17—Amines; Quaternary ammonium compounds
  • C08K5/175—Amines; Quaternary ammonium compounds containing COOH-groups; Esters or salts thereof

Definitions

• the present invention relates to a phenolic resin composition such as adhesive wood glue compositions.
• a phenolic resin composition such as adhesive wood glue compositions.
• such compositions are used for the preparation of particle boards or fibers which meet the technical requirements enabling them to be used in a humid environment.
• these panels must meet the technical requirements for formaldehyde emissions in which they can be classified in class El according to the European standard EN 312 relating to the requirements for particle board in application of the European directive DI 89 / 106 / EC 21/12/1988.
• Particle board or fibreboard manufacturing is based on binding lignocellulosic fibers or particles with a binder. This binder is most often obtained from a synthetic glue containing formaldehyde. During use, the particle boards thus prepared tend to release formaldehyde. In 2005, formaldehyde was classified by the WHO as a carcinogen. Therefore, it is very important that the formaldehyde emissions from these wood panels be kept to a minimum.
• formaldehyde-based resins such as urea formaldehyde resins (UF-resins), melamine-urea-formaldehyde resins (MUF-resins) and Phenol-formaldehyde (PF -résines).
• fiber board or particle board which correspond to different quality requirements.
• Typical quality requirements are related to strength in combination with requirements for moisture resistance.
• resins are used.
• glues based on phenolic resins it is preferable to use glues based on phenolic resins.
• a phenolic resin composition such as an adhesive composition of wood glue or a rigid phenolic foam comprising a protein component, in particular a vegetable protein component, which allows the manufacture of particle-based or wood-fiber-based articles, which may be used in a moist environment, and which meet the requirements of class El for the emission of formaldehyde according to EN 312.
• a phenolic resin composition such as an adhesive composition of wood glue or a rigid phenolic foam comprising a protein component, in particular a vegetable protein component, which allows the manufacture of particle-based or wood-fiber-based articles, which may be used in a moist environment, and which meet the requirements of class El for the emission of formaldehyde according to EN 312.
• the internal cohesion in dry and wet conditions is expressed by specific internal binding values, determined according to EN 319 and EN 321 and the internal swelling after 24
• a phenolic resin-based composition preferably an adhesive composition or a foam (typically a rigid foam) comprising at least one phenolic resin, a vegetable protein hydrolyzate, and an accelerating agent. curing.
• the vegetable protein hydrolyzate is obtained from a cereal protein, preferably wheat gluten.
• the adhesive composition comprises a phenolic resin, wherein 10 to 25 mol% of the phenol is substituted with a vegetable protein hydrolyzate, and so that the phenol: formaldehyde molar ratio is from 1: 1.5 to 1: 1.7.
• phenolic resin any resinous reaction product of a phenol, such as phenol, resorcinol, phenol substituted with an alkyl group such as cresol, xylenol, p-tert -butylphenol and p-phenylphenol with an aldehyde, such as formaldehyde, acetaldehyde and furfuraldehyde.
• a phenolic resin is Plyophen J-325 or Phenolite J-325.
• the phenolic resin in which the phenol is substituted with a vegetable protein hydrolyzate according to the invention can be obtained for example by mechanical mixing.
• curing accelerating agent an agent accelerating the curing of the phenolic resin such as a molecule comprising at least one ester functional group, typically a glycerol ester.
• the agent accelerating the curing of the phenolic resin is chosen from triacetin, butyrolactone, caprolactone and propylene carbonate.
• Triacetin or glyceryl triacetate is a triester of glycerol and acetic acid. This triglyceride is obtained by esterification of natural glycerin. It can also be obtained from acetic anhydride in petrochemicals. Its chemical formula is C9H1406 and its molar mass of 218.21 g / mol.
• the triacetin content may vary between 4 and 10% by weight of the resin solids, preferably between 6 and 8%.
• Dry matter is measured by ISO 3251 method for varnish and plastic paints. More particularly, this measurement is carried out on samples with a mass of 3 ⁇ 0.5 g, these samples are heated for 60 minutes at 135 ° C. and the dry matter is determined and expressed as a percentage by mass.
• the plant protein hydrolyzate used can be obtained by acid hydrolysis, alkaline or enzymatic hydrolysis or a combination thereof. In a preferred embodiment, acid and / or enzymatic hydrolysis of the proteins is used. Typically, the vegetable protein hydrolyzate is also deamidated. The hydrolysis and / or the deamidation of the gluten allow an increase in its solubility. Typically, hydrolysis and deamidation are obtained under acidic conditions.
• an acid hydrolysis can be implemented by the use of hydrochloric acid or sulfuric acid under conditions known to those skilled in the art.
• an enzymatic hydrolysis is implemented using proteolytic enzymes well known to those skilled in the art.
• gluten can be hydrolysed by pepsin and / or papain. Trypsin, chymosin, or chymotrypsin may also be used.
• the hydrolyzate of wheat gluten is obtained by enzymatic hydrolysis and has an average molecular mass of between 3 and 20 kDa, preferably between 4 and 15 kDa.
• the hydrolyzed protein has an average molecular mass of between 4.5 and 12 kDa, 5 and 10 kDa, typically between 5.5 and 8 kDa.
• This average molecular weight can be determined for example by HPLC, size exclusion chromatography (SEC) or permeate gel chromatography (GPC) according to conditions well known to those skilled in the art.
• Another object of the present invention is to provide a method for forming a phenolic resin composition typically a wood glue type adhesive composition, said method comprising the steps of:
• the mixture according to the process of the invention can be carried out in any type of mixer.
• the viscosity can be measured using a Brookfield DV-II + Viscometer viscometer at a speed of 50RPM with an S21 Spindle, the samples maintained at 25 ° C using a thermoregulated water bath.
• the curing agent is added in an appropriate amount.
• suitable amount is meant a quantity that may be considered appropriate by those skilled in the art depending on the type of hardening accelerating agent.
• an appropriate amount is for example between 3 and 20% by weight of triacetin, preferably between 4 and 17%, more preferably between 5 and 15%, more preferably between 6 and 10% or between 6 and 8%, typically about 7% by weight.
• the invention also relates to the use of a composition according to the invention, for the preparation of particle boards or fibers.
• particle board or fiber board panels composed of particles or fibers, more particularly fibers of vegetable origin.
• Particle boards are, for example, products composed of particles or chips, obtained by cutting wood on specialized machines (cutters, hammer mills).
• the particle boards are defined by the NF EN 309 standard and their requirements are specified by the NF EN 312 standard.
• the particles may have sizes of between 1 mm and 10 cm. For example, particles up to 10cm are found in Oriented Strand Board (Oriented Strand Board) panels that can be obtained by using the composition according to the invention.
• Fibreboard is composed of lignocellulosic fibers such as wood fiber, flax or hemp, kenaf, sisal, jute, ramie, nettle, bamboo fiber or viscose fiber.
• Such fiber boards are for example defined by the European standard NF EN 316 and their characteristics are specified by European standards NF EN 622-1 to 622-5.
• the particle board is prepared by mixing wood particles or chopped wood fibers with the adhesive composition according to the invention, and curing the composition under pressure and at elevated temperatures.
• the resin dose may vary between 6 and 12% by dry weight of the wood particles or fibers used. In general, values between 8 and 10% are used.
• the invention is applicable to any type of particles or fibers, in particular of plant origin such as wood particles (large chips, particles, shavings, sawdust) and / or other lignocellulosic material in the form of particles (shives). hemp, flax shives, bagasse fragments)
• the particle board material thus obtained was tested for its mechanical properties and clearly showed the influence of the addition of triacetin on a a number of properties such as swelling, internal cohesion, modulus of elasticity and formaldehyde emission.
• the addition of triacetin also results in a reduction in the maximum polymerization temperature.
• the invention also relates to the use of a composition according to the invention, for the preparation of rigid phenolic foams or particle or fiber boards, in particular panels of particles or plant fibers and in particular lignocellulosic fibers.
• rigid phenolic foams is meant mosses in particular as defined according to ISO 4898 of 2010 in its additive No. 1 of 1988 (also formerly the French standard NF T 56-204). Such foams are obtained from liquid resins. The exothermic crosslinking of the phenol resin causes the vaporization of a blowing agent and the formation of a high proportion of closed cell foam. Such foams are used in thermal insulation, particularly in the form of panels.
• the invention also relates to the use of a vegetable protein hydrolyzate and more particularly wheat protein in the replacement or reduction of formaldehyde in phenolic resin compositions.
• formaldehyde-based resins such as urea formaldehyde resins (UF-resins), melamine-urea-formaldehyde (MUF-resins) and Phenol-formaldehyde (PF-resins).
• formaldehyde-based resins such as urea formaldehyde resins (UF-resins), melamine-urea-formaldehyde (MUF-resins) and Phenol-formaldehyde (PF-resins).
• UF-resins urea formaldehyde resins
• MUF-resins melamine-urea-formaldehyde
• PF-resins Phenol-formaldehyde
• the invention relates to a rigid phenolic foam board or a particle board or fibers preferably reduced formaldehyde content comprising the composition according to the invention.
• the invention will be illustrated by a number of examples relating to the preparation of resins and their use as binder in the preparation of particle board compositions. These examples can in no way be interpreted as limiting the scope of the invention or the patent rights claimed in the claims.
• Example 1 Preparation of a Phenolic Resin Containing a Protein Hydrolyzate
• the resin thus obtained contains 10% of a protein hydrolyzate.
• the phenol portion is reduced to 94 g (0.8 mole) and the protein portion is increased by 1.75 g.
• SOLPRO® 508 (product marketed by TEREOS SYRAL): an enzymatic hydrolyzate of wheat gluten;
• a low molecular weight wheat protein hydrolyzate (LMW) experimental product having an average molecular weight of about 6000 Da.
• LMW low molecular weight wheat protein hydrolyzate
• triacetin is more suitable in accelerating the hardening of phenolic compositions. comprising a hydrolyzate of vegetable proteins since it confers a good acceleration of the hardening for a stability of the hardening mixture allowing an industrial use of the composition obtained, this with small amounts.
• triacetin showed a mixture stability of up to 5 hours for a triacetin amount of 5 to 10% of the dry substance of the resin. Comparative tests have been made in particular with esters such as propylene carbonate or methyl formate.
• Particle boards are prepared using the phenolic resins obtained by the method described in Example 1. The resins used are shown in Table 1:
• Particle board is prepared by mixing 100 g of wood particles (2.5% moisture content) with 10 g of resin solids.
• the resin as such has a moisture content of about 50 to 55%.
• a series of panels is prepared without addition of triacetin, a second series with an addition of 7% of the dry substance of the resin (here 0.7 g).
• the mixtures are then pressed into a mold to obtain panels.
• the mold has the following dimensions: 14x300x350 mm.
• the treatment conditions are as follows: heating at 160 ° C while pressing three consecutive and decreasing pressures. This is shown in Table 2:
• Example 3 Swelling behavior of the prepared panels: In this example the swelling behavior was tested on panels made with the resins prepared in Example 1. The panels tested have a thickness of 13 mm. The swelling behavior is thus determined as described in standard NF B51-262. First the thickness of the panel is measured and then the panel is baked for 2 hours. After cooking, the panels are oven-dried at 103 ° C. for 24 hours.
• the dry swelling value G is then determined as follows:
• Table 3 swelling behavior of the resin-based panels of Table 1.
• Example 4 internal cohesion of the panels: In this example, the internal cohesion before swelling (according to EN319) and after swelling (according to EN321) is determined. The values are expressed in N / mm 2 in Table 4. These values again show the effect of the presence of triacetin on phenolic compositions containing proteins.
• Example 5 Formaldehyde emission of particle boards:
• the formaldehyde emission of the panels must be less than 6.5 mg / 100g on dry panel, according to EN312, as determined by the method described in EN717-3.
• Table 5 the formaldehyde emissions of panels made with adhesives according to the invention are presented. Resins cont. 7% triacetin Emission formaldehyde (mg / 100g)
• the inventors have observed that compared to the panels which do not comprise gluten hydrolyzate, the panels comprising a gluten hydrolyzate showed a lightening of the panel visible to the naked eye.
• This characteristic of the panels obtained by the use of the compositions according to the invention makes it possible, for example, to reduce the thickness of the coating required to obtain color panels and in particular white panels. Such thinning is particularly advantageous in the main use of these panels in the building field.

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Health & Medical Sciences (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Biochemistry (AREA)
• Wood Science & Technology (AREA)
• Dry Formation Of Fiberboard And The Like (AREA)
• Adhesives Or Adhesive Processes (AREA)
• Compositions Of Macromolecular Compounds (AREA)

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• 2013
  • 2013-10-07 FR FR1302320A patent/FR3011554B1/fr not_active Expired - Fee Related
• 2014
  • 2014-10-07 WO PCT/IB2014/065129 patent/WO2015052657A1/fr active Application Filing
  • 2014-10-07 BR BR112016007254A patent/BR112016007254A2/pt not_active Application Discontinuation
  • 2014-10-07 US US15/027,950 patent/US10316224B2/en not_active Expired - Fee Related
  • 2014-10-07 CN CN201480055282.3A patent/CN105829480A/zh active Pending
  • 2014-10-07 EP EP14786363.3A patent/EP3055374A1/fr not_active Withdrawn
• 2019
  • 2019-04-24 US US16/393,909 patent/US20190249046A1/en not_active Abandoned

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