KR100196687B1 - Thermoplastic resin from lignocellulose - Google Patents

Abstract

The present invention relates to a process for converting lignocellulosic materials into thermoset waterproof adhesives and composite articles.

The lignocellulosic material is first treated with high pressure steam to pyrolyze and hydrolyze hemicellulose to produce water-soluble, low molecular weight carbohydrates and other degradation products. The lignocellulosic residue is again treated with high pressure steam to decompose and hydrolyze the cellulose to produce water-soluble, low molecular weight carbohydrates and other degradation products. Such water-soluble materials can be used alone or in the form of a mixture as a thermosetting resin adhesive to create a watertight bond under heat and pressure. Thermosetting adhesives may also be used to bond other components of the lignocellulosic material, or may be used with other lignocellulosic or non-lignocellulose materials to produce a waterproof composite article.

Description

Thermosetting Resin and Composite Articles from Lignocellulosic

The present invention relates to a process for converting lignocellulosic materials into thermoset waterproof adhesives and composite articles.

The lignocellulosic material is first treated with high pressure steam to pyrolyze and hydrolyze hemicellulose to produce water-soluble, low molecular weight carbohydrates and other degradation products. The lignocellulosic residue is again treated with high pressure steam to decompose and hydrolyze the cellulose to produce water-soluble, low molecular weight carbohydrates and other degradation products. These water soluble materials can be used alone or in the form of a mixture as a thermosetting adhesive to create a watertight bond under heat and pressure. Thermosetting adhesives may also be used to bond other components of the lignocellulosic material, or may be used with other lignocellulosic or non-lignocellulose materials to produce a waterproof composite article.

Applicant's US Patent No. 07 / 524,700 discloses a method of making a composite article from lignocellulosic material.

This method first decomposes and hydrolyzes lignocellulosic material by autoclaving to hemicellulose into a water-soluble substance that is a low molecular weight carbohydrate, and then uses the water-soluble substance as a thermosetting adhesive to bind other components of lignocellulosic phosphorus To make the composite article reconstituted under heat and pressure. The water soluble material acts as both a binder and a filler to produce a composite article having good mechanical strength and excellent dimensional stability. In this way, this method is superior in economical and technical terms to conventional methods that require thermosetting synthetic adhesives such as phenol and urea formaldehyde to bind.

The present invention relates to a method of extracting a thermosetting resin adhesive from lignocellulosic material and converting the lignocellulosic material into a composite article. This method can be used for all lignocellulosic materials, either woody or non-woody. The thermosetting adhesive thus obtained has excellent properties of binding lignocellulosic and non-lignocellulose materials to achieve waterproof bonding.

First, hemicellulose of lignocellulosic material is decomposed and hydrolyzed by high pressure steam to prepare a low molecular weight water soluble resin material selected from the group consisting of pentose sugar, hexose sugar, sugar polymers, furfural, dehydrated carbohydrates, organic acids and other decomposition products. This water soluble material can be extracted and concentrated to be used as a thermosetting adhesive. Under heat and pressure, the water-soluble resinous material can be polymerized, crosslinked and thermoset to form a waterproof bond that is resistant to boiling water.

Secondly, the lignocellulosic residue from which the water-soluble substance was extracted was subjected to high temperature steaming to pyrolyze and hydrolyze the cellulose to form hexose and pentose sugars, sugar polymers, hydroxy methyl furfural, furfural, organic acids and other decomposition products. Low molecular weight water-soluble materials selected from These water soluble substances can be extracted and concentrated, used alone or in combination with water soluble substances extracted from hemicellulose hydrolysis, to be used as thermosetting resin adhesives. Lignin is also pyrolyzed and hydrolyzed during autoclaving to yield low molecular weight lignin and lignin products. Incidentally, the water soluble resinous material always contains a small amount of such lignin decomposition products.

In conventional methods of making composite articles from lignocellulosic materials, thermosetting resin binders are required for bonding.

Thermosetting binders are generally synthesized from petrochemicals such as urea-formaldehyde and phenol-formaldehyde, the most commonly used synthetic resins in composite articles based on lignocellulosic materials. Since these synthetic binders are obtained from non-renewable petrochemicals, they become more expensive as natural resources are depleted. Therefore, the use of renewable lignocellulosic materials as feedstock for thermosetting adhesives is of great interest to manufacturers because they are technically and economically superior to conventional methods.

The use of water-soluble carbohydrates from the hemicellulose portion of lignocellulosic material as an adhesive may be used by Mason to manufacture hard boards of wood, such as Masonite (US Pat. Nos. 2-1,578,609, 1,824,221 and 2,303,345). It first appeared in the 1930s after patenting. The mayiteite method involves treating wood chips with high pressure steam to separate the lignin from the lignocellulosic material and to hydrolyze the hemicellulose and make it water soluble. At the end of the steaming process, the pieces of wood are expelled from the high pressure gun, with an explosion that turns the pieces into fibers and fiber bundles. The water-soluble substance is eluted with water to separate and the remaining fibers with cellulose and lignin are processed into hardboard. Mace knight depends on natural lignin in binding. Water-soluble substances are treated separately as by-products under the trade name Maconoid.

egg. In U.S. Patent No. 2,224,135, to which R. Boehm is granted a patent, maynoid, a water-soluble adverb / product in the manufacture of hard boards, is used to prepare aldehydes, alcohols and organic acids. The patent also mentions that the water soluble materials thus obtained can be further concentrated and used as water soluble adhesives. The use of maceoids as water-soluble adhesives was also W. in 1949 and 1950, respectively. US Pat. Nos. 2,643,953 and 2,716,613 are also taught. These patents mention that these water-soluble materials are adhesive, but have been found to be not completely satisfactory for use as adhesives.

One reason is that these water soluble materials are undesirably hygroscopic and therefore the bonds formed from them when used as adhesives are somewhat unstable. Adhesive bonds formed from such water-soluble materials under high humidity absorb moisture from the air, weakening the adhesive bonds, while under low humidity, adhesive bonds formed from such water-soluble materials lose moisture and weaken. When absorbing moisture, adhesive bonds formed from these water-soluble materials tend to melt, while moisture loss hardens the bonds, leaving them brittle (US Pat. No. 2,643,953, Col. 1, lines 25-35).

Boehm and Schoell did not realize that, when properly pyrolyzed and hydrolyzed hemicellulose, these water-soluble substances could naturally be thermally cured and used as waterproof adhesives. Instead, the maceoid can only be used as a water soluble adhesive, according to Boem and Shoel's patents. Because they did not recognize the binding properties of water soluble materials, their patents only teach the occurrence of water soluble adhesive bonds. Water soluble adhesives are only commercially available on a limited basis.

It is because of the logical development of the maye night process that Bohm and Schöll did not realize that the water-soluble substance resulting from hemicellulose hydrolysis can be thermally cured if done according to the present invention. The mayiteite method utilizes natural lignin as a binder, not a water-soluble substance which is removed by the maceoid in the mayiteite method. Removing the water soluble material is an important characteristic of the maye knight method of making board articles, since the presence of such water soluble material will sensitize the desired product. Boehm and Schoell did not recognize that such water-soluble materials could be thermoset, or they did not attempt to make thermosetting bonds from water-soluble materials obtained as a by-product from the Maynite method and found that such waterproof bonds were not possible. The degree of thermal hydrolysis in the mayeite process may not have been adequate to produce the necessary water soluble materials required to make thermosetting waterproof bonds. As the present invention teaches, with respect to a constant and specific lignocellulosic feedstock, only a very specific combination of temperature and time can produce the resulting water soluble material that contains any decomposition products required for hydrolysis and thermosetting bonding. have.

Carbohydrates have been studied in the past not only as co-reactants with phenolic resins, but also as the sole component of adhesives. In US Pat. Nos. 1,593,342, 1,801,953, and 1,868,216, Mages did some initial work with phenol carbohydrate combinations. Both acid and basic catalysts were used in this reaction and later included reactions with aniline or aliphatic anions.

Chang and Kononenko (Adhesives Age, July 1962: 36-40) developed an adhesive system in which sucrose reacts with phenol under basic conditions.

The adhesive thus obtained is said to be suitable for the manufacture of external plywood. In US Pat. No. 4,048,127, Gibbons and Wondolowski produced a soluble liquid adhesive in which the carbohydrate-urea-phenol reaction product was neutralized and further reacted with formaldehyde to form a basic adhesive for plywood.

More recently, in US Pat. Nos. 4,107,370, 4,183,997 and 4,375,194, Storco proposed a system using various carbohydrate sources and acid catalysts, including sucrose and starch, as a waterproof adhesive for bonding lignocellulosic materials. It was. One of these patents also teaches the use of live steam under a sealed press to convert sugar-starch adhesives into waterproof bonds. In contrast, the present invention utilizes a water-soluble substance consisting of pentasaccharide and hexasaccharide, sugar polymers, furfural, dehydrated carbohydrates, organic acids and other degradation products and extracted with hemicellulose and cellulose hydrolysis of any lignocellulosic material. . Without any chemical denaturation or catalyst, these extracted water soluble materials, together with small amounts of lignin degradation products, can be used in the preserved form as a thermosetting waterproofing resin adhesive for bonding lignocellulosic and non-lignocellulose materials. In addition, by using a water-soluble material that binds and bulkens other components of lignocellulosic in situ, or in combination with other lignocellulosic materials, hydrolyzed lignocellulosic is further treated to provide excellent mechanical strength and excellent dimensional stability. The reconstituted composite article can be prepared.

Embodiments of the present invention will be described and illustrated in detail in the following examples.

Example 1

White spruce and jack pine sawdust residues containing about 7% bark and 16% moisture are crushed with a hammer mill and passed through a 6.4 mm (1/4 inch) screen, Treatment was at various steam temperatures. A total of 15 batches of residue were treated with four different high pressure steams at a temperature of 215-260 ° C. for 1 / 2-11 minutes. After steaming, the treated milled residue was washed with warm water and the eluent was evaporated under vacuum to a concentration of about 50% solids as a liquid resin adhesive. The liquid resin adhesive was dark brown with a pH of about 2.8 to 4.3. The liquid resin was low in viscosity and easy to spray.

Poplar wafers (about 38 mm long, 0.7 mm thick, 6-50 mm wide) were sprayed with a 6% liquid adhesive (solids by weight of OD wafer weight). The wafers were dried until the moisture content was about 3-5% before making the mat after spraying. A total of 38 waferboards (60 × 60 × 1.11 cm) with a density of about 660 kg / m ³ were made under one compression condition (230 ° C. temperature, 12 minutes, 35 kg / cm ² closing pressure).

The test results are summarized in Table 1 below. Canadian standard CAN-0 437.0-M86 was also included for comparison.

Example 2

In this example, the particle size and particle shape of the feed material are shown in relation to the quality of the resulting thermosetting resin adhesive. The young poplar chips containing about 25% moisture were divided into two equal parts A and B. However, the chip in part B was crushed with a hammer mill before steaming and passed through a 6.4 mm screen. Both parts A and B were then autoclaved at 230 ° C. for 3 minutes. The liquid resin adhesive was extracted and concentrated separately from the treated poplar chips and particles. Under the same conditions, two batches of six wafer boards were made with resin adhesives extracted from poplar trees A and B. Table 2 below shows the test results indicating that the resin adhesive extracted from the poplar particles treated with the hammer mill is better than that extracted from the same raw material, the poplar chip.

Example 3

This example specifies the use of the bark in the extraction of the resin adhesive. The young white pine bark with about 12% wood containing about 53% moisture was ground with a hammer mill and passed through a 6.4 mm screen and treated with high-pressure steam at 230 ° C. for 5 minutes. A liquid resin, about 16% by weight of O.D shell, was extracted from the steamed shell and concentrated to a liquid resin with 48% solids. The shell resin was pH 3.2 and had a dark brown color. Fabricate three homogeneous particle boards with 8% resin solids and weigh 40kg / cm It was heated and pressurized at 230 ° C. for 10 minutes. The test results are shown in Table 3.

Example 4

Resin adhesive extraction from sugarcane bargas cultivation residues, ie, fleshy residues, remaining after extraction of sucrose from sugarcane sugar products is specified in this example. Vargas containing about 14% moisture was autoclaved at 220 ° C. for 7 minutes. The resin solids, about 12% by weight of O.D Vargas, were extracted and concentrated with a liquid adhesive to have about 52% solids components. 8% liquid adhesive was sprayed onto the dried Vargas fibers and pressurized at 230 ° C. for 10 minutes to produce a homogeneous particle board (600 × 600 × 12.5 mm) having various board densities. The test results of the three Vargas particle boards are summarized in Table 4 below.

Example 5

The use of another agricultural by-product, straw straw, as a raw material for the production of thermosetting adhesives is specified in this example. The dried straw was cut to about 20 cm in length and treated with high pressure steam at 240 ° C. for 2 minutes. About 14% water soluble material was extracted by straw weight and concentrated to a liquid adhesive with about 49% solids.

Fine spruce particles smaller than 2 mm were sprayed with 10% liquid adhesive. Larger particles between 2 m and 6 mm were sprayed with a liquid adhesive of 8% solids. Three particle boards (600 × 600 × 12.5m) having a three-layer structure were formed of fine particles and deep particles of coarse particles. 770kg / M target density for all boards All boards were heated and pressurized at 230 ° C. for 8, 10 and 12 minutes, respectively. The test results are summarized in Table 5 below.

Example 6

Young birch chips containing about 7% bark material and about 70% moisture were treated with high-pressure steam at 230 ° C. for 5 minutes. The chips were washed twice with water and pressed to extract as much extract as possible. The extract was evaporated in vacuo, concentrated to a liquid adhesive containing about 3% solids and lyophilized to a fine solid powder.

This micropowder resin adhesive is easy to handle and can be packaged and stored. Poplar wafers were first sprayed with 1% slack wax and then 4% resin powder. Three waferboards with 34kg / cm for three different press times 8, 10 and 12 minutes Under the pressure of, it was made into a powdery adhesive at a pressurization temperature of 230 ° C. Table 6 shows the test results of these three wafer boards.

Example 7

This example specifies that hydrolysis of hemicellulose into a water-soluble carbohydrate resin material from a mixture of aspen and birch in about the same proportions by chip weight using a low vapor temperature with an acid catalyst.

The fresh mixture of aspen and birch chips was divided into two batches. One batch is immersed in 0.4% sulfuric acid solution for 24 hours and steamed at 150 ° C. for 25 minutes. The other batch was divided into three groups without the addition of acid and each group was also steamed at 150 ° C. for 60, 120 and 180 minutes respectively.

The water soluble material was extracted from two treatment batches of chips mixed with aspen and birch and concentrated to a resinous material with about 46% solids.

The liquid resin adhesive obtained from the acid catalyst chip was adjusted to pH 3.0 with sodium hydroxide prior to use in wafer board bonding.

Twelve wafer boards were made with four resin adhesives derived from two batches of chips.

The resin content of all wafer boards was 6%. Pressurization temperature was 230 degreeC for 12 minutes. The results are summarized in Table 7 below.

Example 8

Extraction of the water-soluble resinous material from the previously hydrolyzed lignocellulosic material is disclosed in this example.

The previously hydrolyzed lignocellulosic material consists of cellulose and lignin products containing small amounts of hemicellulose and water-soluble substances.

After treatment with high pressure steam and extraction of the water from the hydrolyzed hemicellulose, the poplar particle residue in Example 2 was sprayed with 0.4% sulfuric acid solution. The acid content of the residue was about 1.2% based on the O.D weight of the residue.

The acid-laden residue was steamed at 210 ° C. for 14 minutes to produce water-soluble resinous material by hydrolysis of cellulose.

O.D weight of the lignocellulosic residue gave about 32% water soluble material. The liquid resin was adjusted to pH 3.0 with soluble base NaOH and concentrated with liquid resin adhesive to have a solids content of about 48%. Three poplar wafer boards were made with a 6% spray of liquid resin adhesive. The test results are summarized in Table 8 below.

Example 9

The variety of methods for thermosetting adhesive and composite panel articles that can be produced in the same lignocellulosic material after steaming is specified in this example.

The green poplar chip was treated with high pressure steam at 245 ° C. for 90 seconds. After steaming, the water-soluble substance having about 6% by weight of the O.D of the chip was extracted with hot water extract, concentrated to about 50% solids, and a wafer board was prepared using a resin adhesive. Then, the remaining chips were mixed with 20% green poplar chips and refined with a disk refiner to produce fibers for producing a medium density fiber board.

Sufficient resin material remained in the steamed bonding fiber material and was not added with any adhesive. The experimental results for the wafer board and the MDF are summarized in Table 9 below.

Example 10

The use of a mixture of hemicellulose of cellulose and water-soluble resinous materials derived from cellulose is disclosed in this example. The water-soluble resin adhesives collected in Examples 2 and 8 were mixed at a ratio of 1: 1 based on the weight of the resin, with acidity adjusted to pH2.7.

The wafer boards made from PoplarChip's hemicellulose and cellulose, respectively, have very similar physical properties to wafer boards bonded with hemicellulose and water-soluble resins derived from cellulose, respectively. The test results are summarized in Table 10.

Example 11

The advantages of the acidity of the resin material obtained in the acid hydrolysis of hemicellulose and cellulose shown in Examples 7 and 8 are specified in this example. The strong acid resin obtained from the acid hydrolysis of poplar cellulose in Example 8 was mixed with the resin material obtained from the hydrolysis of poplar hemicellulose in Example 7. These two liquid resins were mixed and adjusted to pH2.7. The mixed strong acid resin was used to make a wafer board.

Six wafer boards (three layers, 11.1 mm thick) were fabricated with 60% of 0.028 (0.71 mm) core wafers with 40 wt% wafers and 8% resin solids to 0.015 (0.40 mm) with 10% resin content. . Both the face and core wafers contained 1% slack wax. Pressurization was performed for 5, 6 and 7 minutes at a pressurization temperature of 220 ° C. The test results are summarized in Table 11.

It is evident that strong acid resins produce excellent wafer boards except at relatively lower plate production temperatures and shorter pressing times.

Example 12

This example demonstrates the ability to bond casting sand of a resin binder (245 ° C., 3 minutes) extracted from spruce and pine. 60 g and 40 g of a 50% solids content were mixed with 2 kg of AFS GEN 60 sand, respectively. The resin-coated sand was several times heated by hand between a pair of hot plates at 260 ° C. to cure and thermally cure the resin to make 6.3 mm thick dogbones. All heated solids became dark brown or black. Edge retention and surface definition were normal. The liquid resin curing time and the percentage of tensile strength are as follows.

Strength values are the average of two tests. These strength properties appear to be suitable for bonding foundry sand. The specimens were made three weeks after the original batch of resin-coated sand in a bag. Tensile strength did not change.

This indicates that the premixed sand has a long shelf life if it does not dry out completely. The BCIRA Heat Deflection Test measures the deflection of 100 x 25 x 6.3 mm specimens placed on a flame. The specimen was fixed at one end and the movement was observed at the free end. After 3 weeks of mixing the resin binder with sand and curing for 4-6 minutes, the prepared specimens expanded slightly more than normal and completely destroyed after 90-120 seconds.

These test results show the potential of resin binders extracted from lignocellulosic to bond sand for castings.

Claims (19)

A method of converting lignocellulosic material into a thermosetting resin material, comprising: a) dividing the lignocellulosic material in divided form at a temperature high enough to decompose and hydrolyze without carbonizing the hemicellulose contained in the lignocellulosic material; Contacting with high pressure steam; b) lignocellulosic material for a time sufficient to decompose and hydrolyze the hemicellulose into a low molecular weight water soluble resin material selected from the group consisting of pentasaccharide and hexasaccharide, sugar polymers, furfural, dehydrated carbohydrates, organic acids and other similar degradation products; Contacting with high pressure steam; c) separating the water soluble resin material, wherein the separated water soluble resin material can be used as a thermosetting resin adhesive; d) bringing the pre-hydrolyzed residual lignocellulosic material in step b) into rapid contact with the high pressure steam for a second time at a temperature high enough to decompose and hydrolyze without carbonizing the cellulose; e) in advance for a time sufficient to decompose and hydrolyze cellulose to a low molecular weight water-soluble resinous material selected from the group consisting of pentasaccharide and hexasaccharide, sugar polymers, hydroxymethyl furfural, furfural, organic acids and other degradation products; Contacting the hydrolyzed lignocellulosic material with high pressure steam; f) separating the water-soluble resinous material from the hydrolyzed lignocellulosic material and separating it into a water-soluble resinous material and a hydrolyzed lignocellulosic residue; g) a surface which is adhered to it at a constant temperature and pressure for a time sufficient to be a waterproof adhesive bond which polymerizes, crosslinks and thermosets and adheres to the surface the water-soluble material prepared in steps c) and f) in concentrated form. Heating and pressurizing. CLAIMS 1. A method of converting hemicellulose of lignocellulosic material into a thermoset, water resistant resin adhesive, comprising the steps of: a) contacting lignocellulosic material in divided form with high pressure steam at a temperature of 120 ° C to 280 ° C; b) lignocellulose only for a time sufficient to decompose and hydrolyze hemicellulose into a low molecular weight water-soluble resinous material selected from the group consisting of pentasaccharide and hexasaccharide, sugar polymers, dehydrated carbohydrates, furfural, organic acids and other degradation products; Contacting the material with high pressure steam; c) separating the water soluble resinous material from the hydrolyzed lignocellulosic material; d) concentrating the separated water soluble resinous material to a high solids content; Wherein the concentrated resin material is usable as a thermosetting adhesive for adhering lignocellulosic and non lignocellulosic materials. A method for converting cellulose of lignocellulosic material into a thermoset, waterproof resin adhesive; a) treating with hemicellulose to high pressure steam to decompose and hydrolyze, and rapidly contacting the lignocellulosic material from which the water-soluble resin material is extracted from the high pressure steam at a temperature of 120 ° C to 280 ° C; b) lignoses for a time sufficient to decompose and hydrolyze cellulose to low molecular weight water-soluble resinous materials selected from the group consisting of hexasaccharides and pentoses, sugar polymers, hydroxymethyl furfural, furfural, organic acids and other degradation products; Maintaining the cellulosic material in contact with high pressure steam; c) at a temperature of at least 160 [deg.] C. at a time and pressure sufficient to cause the water-soluble resin material thus produced in concentrated form to be a water-tight adhesive bond that is polymerized, crosslinked and thermoset to adhere to the surface. And heating and pressurizing the water-soluble resin material. A method of converting lignocellulosic material into a thermosetting resin adhesive and a reconstituted composite article, comprising the steps of: a) dividing the lignocellulosic material in divided form at a temperature sufficient to decompose and hydrolyze the hemicellulose without carbonizing the hemicellulose; Rapidly contacting with high pressure steam for a time sufficient to decompose and hydrolyze with a low molecular weight water-soluble resinous material selected from the group consisting of pentasaccharide and hexasaccharide, sugar polymers, furfural, dehydrated carbohydrates, organic acids and other degradation products; b) separating some water soluble resinous material from the lignocellulosic material, wherein the separated water soluble resinous material can be used as a thermosetting waterproof resin adhesive; c) drying and attenuating the remaining lignocellulosic material in any order into fibers or microparticles; d) fibrous or microparticulate lignocellulosic material alone or mixed with other lignocellulosic materials in subdivided form to form a mat; e) pressurizing the mat using heat and pressure to thermally cure the water soluble resinous material in its place with a tacky adhesive and solidify the mat into a reconstituted composite article; Method characterized in that consisting of. The hydrolyzed lignocellulosic material, in the form of particles, fibers or flakes, containing water-soluble resinous materials from steps c) and f), alone or in combination with other lignocellulosic materials Drying as low moisture as possible and concentrating as soon as possible, i) mating the dried lignocellulosic material alone or with other lignocellulosic material, and then j) a constant pressure and the water-soluble resin material first Bonding and swelling the lignocellulosic material as the surface to be bonded in place by pressing the mat at a high temperature without burning the mat, for a time sufficient to polymerize into one crosslinked polymeric material and thermally cure the thus formed polymeric material with a waterproof adhesive. And form a combined composite article. The hydrolyzed lignocellulosic material of claim 1, in the form of particles, fibers or flakes from steps b) and e), alone or in combination with other lignocellulosic materials. By drying to a low moisture content as soon as possible, concentrating, forming into a mat and then polymerizing the low molecular weight water-soluble resin material into the above-mentioned crosslinking, polymer material at 160 ° C to 250 ° C without burning the mat, The polymer material thus formed is pressurized at a pressure and time sufficient to thermally cure with the waterproof adhesive to bond and expand other components of the lignocellulosic material, which is the surface to be bonded, in place and form a bonded composite article. How to. The method of claim 1, wherein the water-soluble resinous material extracted and eluted from the decomposed and hydrolyzed lignocellulosic material is treated in concentrated form. The method of claim 1, wherein the water-soluble resin material obtained by the decomposition and hydrolysis of the hemicellulose and the cellulose of the lignocellulosic material is used separately or mixed together, and is used as a thermosetting resin adhesive in liquid or solid form. . The method according to claim 1, wherein the hemicellulose of the single or mixed type and the water-soluble resin material derived from cellulose are used separately or in combination. The method of claim 1, wherein the divided lignocellulosic material is mixed with an acidic catalyst in an amount of no greater than 5% by weight prior to steaming to reduce steam temperature and time, and hemicellulose and cellulose are pyrolyzed and hydrolyzed to a water-soluble resinous material. To facilitate the process. The method according to claim 1, wherein the pH of the water-soluble resinous material derived from hemicellulose and cellulose of a single or mixed type used separately or in combination is lowered to promote thermosetting of the adhesive bonds. The method of claim 1, wherein the lignocellulosic and non-lignocellulose materials are combined in a single or mixed type, using separately or mixed water-soluble resinous materials derived from hemicellulose and cellulose. The method of claim 1, wherein the lignocellulosic material is derived from wood or woody or non-woody crops in a single or mixed variety, in the form of particles, fibers, flakes, chips or mixtures thereof. The method of claim 1, wherein the lignin of the lignocellulosic material is decomposed and hydrolyzed with high pressure steam to produce low molecular weight lignin and lignin decomposition products. The method of claim 1, wherein the water-soluble resinous material resulting from the decomposition and hydrolysis of hemicellulose and cellulose contains a small amount of low molecular weight lignin and a lignin decomposition product. The preferred steam temperature according to any one of claims 1 to 5 to 15, wherein the lignocellulosic material is hydrolyzed is in the range of 120 to 280 ° C, and the preferred vapor duration is in the range of 30 seconds to 180 minutes. Characterized in that the method. The method of claim 2, wherein the preferred steam temperature at which the lignocellulosic material is hydrolyzed is in the range of 120-280 ° C., and the preferred vapor duration is in the range of 30 seconds to 180 minutes. The method of claim 3, wherein the preferred steam temperature at which the lignocellulosic material is hydrolyzed is in the range of 120-280 ° C., and the preferred vapor duration is in the range of 30 seconds to 180 minutes. The method of claim 4, wherein the preferred steam temperature at which the lignocellulosic material is hydrolyzed is in the range of 120-280 ° C., and the preferred vapor duration is in the range of 30 seconds to 180 minutes.