JPS6186206A - Manufacture of lignocellulose composite molded shape - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to the compression molding of glued cellulose materials into composite materials, and more particularly to the compression molding of glued cellulosic materials from the surface of a mold α Regarding the use of functional polysiloxane-iso77nate copolymer as a mold release agent capable of gradual decomposition and the method for producing particle board using a polyisocyanate binder. ↑3j3 Formation of lignocellulose and lignocellulose biofunctionalized fibers, such as forming particles or layers, is known. Binding agents and polyisocyanates as useful binders for lignocellulose materials. 61 (in the past, ordinary tl, and particle board raw J) ■ Things 14
m1 provides greater stability and mechanical strength.

For example, U.S. Time R+A No. 3,428.592, No. 3.4
No. 40,189, No. 3゜557.263, E 3.63
6. No. 199.

See No. 3.870,665, No. 3.919.017 and No. 3.93 Ll, l l 11. It is also known in the art that isocyanate binders are mixed with wood particles used as substrates for particleboards. The mixture of wood chips or particles and isocyanate binding agent is then formed into a mat and subjected to pressure and temperature treatment.
It is molded into the desired size or shape.

Water emulsion polyinocyanate binder systems used with lignocellulose injection particles to make particleboard are also known. The main disadvantage of the use of isocyanates in the production of particleboard is due to their excellent adhesion properties.

Therefore, the water emulsion or am chain polyisocyanate binder 1bj faux Aison anart yarns strongly adhere to the full length caul plate used to support the wood particles during transport and during the pressing or molding process. Poor demolding of molded particleboard from the cowl or mold surface creates difficulties in cowl gluing and automatic processing. External mold release agents have been developed to prevent sticking problems and are described, for example, in US Pat. No. 4.1.
The method described in No. 10,397 is commonly applied to the surface of cowl plates, platens, or mats. Other conventional mold release agents such as oils, waxes, polishes, 7 silicone and polytetrafluoroethylene are unsatisfactory, as are specialty urethane mold release agents, including those used in structural foam applications. Another way to overcome the sticking problem is to use J:D or eg US Wm 3.390.11 for one year paper type
C1, No. 4.197,219 and C3,919,0
The method shown in No. 17 was to bond a veneer of sea urchin wood with efiisocyanate or to cover it with Kutu cellulose particles. These people: Is it worth it to live in Japan? Further increase or isocyanate 1if (1) 1
Any disadvantage of not fully utilizing the ambiguity of M. Many of the mold release agents that have been developed to date require multiple IIA applications in each complex manufacturing cycle in order to be used as a mold release agent.
Ha.

Means for solving problem C] A mixture of cellulosic particles and a binder made of polyisocyanate is placed in the mold or coated on the mold.
Molding between the lignocellulose and lignocellulose molds provides a method of manufacturing the material and also mixes it with the enemy body as a diluent in one or more of the molds. Functional polysiloxane as mold release agent
Apply one bottle of isocyanate.

It is an object of the present invention to provide a composition in which υ1.jj< 1 as a mold release process, and to provide a wide range of mold release properties for molded articles.

Other purposes can be easily applied and the surface of the mold
The aim is to encourage the ``oboro +'';! +jll.

Another object of the present invention is to provide a mold release agent which is desired to be used in agriculture in small quantities.

These and other objects and advantages of the invention will be apparent from the description of the invention and from the claims. The present invention involves applying a film of a mold release agent to one or more surfaces of a mold by dipping, spraying or wiping a functional polysiloxane-isocyanate copolymer with C9 and an organic compound used as a binder. The method of producing erylignocellulose composite moldings, particularly particleboard, consists in bonding wood chips or other cellulosic or organic materials with iso7anate using heat and pressure. Formula (where n is a bank number from 5 to 30, In is a band number from l to 20, and X is 10H, (Jll, -C110H
.

C113CH3 -C(J(Jl(, -C(JH or -(JH) A functional polysiloxane having a group selected from ), -CH2(CH
2)yNCU.

(In the formula, 141 is hydrogen or an alkyl resin having 1 to 6 carbon atoms, and y is an integer of 1 to 20.) An inventive copolymer mold release agent is formed.

Primarily for wet release or extended manufacturing use cycles, one or more surfaces of the film coated mold may be heated to 75° C. to 200° C. for 1 to 5 minutes before use.

Molded or sticky cellulosic composites, such as particleboard or flakeboard, are generally produced by spraying polyisocyanate binders onto the particles while they are being mixed or agitated in conventional equipment such as a blender. be done. Excessively dried in the oven (0% moisture content
(Paste it on polyinocyanate binder for convenience?rf,
'tri〒'] Measure 15-12 and preferably 2
5-65 East 1n'' section.

Other lighting agents, such as fire retardants, may also be added to the particles during the mixing or blending step, but may also be sprayed with the 1"I brining.

To form a homogeneous mixture, the cellulose particles are heated thoroughly to form a "cake" in order to integrate the wood particles into a board of the desired thickness (into a polished aluminum or bar cowl board). ]
A loose mat or felt is formed with the desired alignment on top. The temperature of the press is generally 140°C to 220°C, and the pressure is about 7 to 42 kg/cyri' (about lo O
~6 U Opsi, JT al. Press time is 1-10
The time is preferably 3 to 5 minutes.

The pressing time, temperature and pressure depend on the thickness of the board being manufactured,
It will vary widely depending on the desired density of the board, the size of the lignocellulosic particles used, and other factors known in the art.

Isocyanate binders are generally used in monopolyin heptanate binders, but may also be mixed with other types of binders, such as synthetic resin glue, or mixed with diluents, such as kr%2 propylene. . Isocyanate has no viscosity
It may be applied in liquid form as a solution in a water-11 emulsion.

Polyisocyanate J used in the present invention in the binder system
Bokubun is any 4j machine polyinocyanate and 1
At least two isocyanates per molecule include aliphatic, fatty, and aromatic polyisocyanates. The polyisocyanates include diisonoanates and highly arsenic isocyanates. Mixtures of polyisocyanates are also used, which are US'F4t+F3,
It is a mixture of polyisocyanates prepared by phosgenation of aniline-formaldehyde condensates as described in No. 962.302 and No. 3.919.279. The polyisocyanate may be a polyol (on a polyisoneanate to polyol basis) and may include polyethylene glycol, polypropylene glycol, triethylene glycol, etc. and polyester polyols and Reacting a partially esterified glycol or polyglycol containing a polyether polyol with a partially esterified polyisocyanate under standard known conditions Natopoly; probably a prepolymer.

Examples of bound polyinocyanates which can be used are, for example, toluene-2,4- and 2,6-diucyanate or mixtures thereof.

diphenylmethane-isonoana-), m-717'p-
fluorinated diisocyanates or mixtures thereof.

m- and p-diphenylene/ino/ananate, polymethylene polyphenylisonoanato, naphthalene-1,5
-diyne/ana-), talolophenylene diiso/anate, α,α-xylene diiso/anate, triphenylmethane triisonoanate.

Hexamethylene diinonoanate: 3. ￥-Citrilene-4,4-diisonanate, Bunalene'1,1-
Diisonanate, octylene-1,8-diisonanate, 1.4-. 1.3- and 1.2-7 Rikuhegyi/Renine Isonoanato and generally U.S. Patent No. 3.577.
No. 358, cl, 3.012. (1 (No. 18 and Q4
Polyisocyanate 1'i↑mu disclosed in No. 3.097.191. Preferred polyiso7anate U 2.2
'Different note 24 k Said diphenylmethane diisocyanate 2゜1'Text Hi-1,,1':, 14-mer and 'I polyisocyanate with high steering property and polymenalene polyphenylisocyanate mountain', combination 1・J (may contain an amount of diphenylmethane/I,L/anate isomer in 20 to 851).A representative example of a preferred polyisocyanate is Rubinate.
) -M j (Rubicon e-chemistry/'s)
'f -' j-Bo L/Sodo (Rubicon Ch
electronics.

It is marketed as lr+c)).

General Shikoi゛J 4 years old polyin 1 ``Nato is about 11)
Q-10, U 00...1j range I! Minutes within 11-”
'iLLke/11゛suwi. Water-based organic polyinonoanate? Emulsions of X-yne/anate-terminated prepolymers are generally prepared with tilt +JN,' as the binder.
It is possible to prepare an aqueous emulsion or dispersion using any technique known in the art. Generally, the polyin7anate is dispersed in water in the presence of an emulsifier or surfactant, which may be any emulsifier known in the art, including anionic and nonionic agents. The production of aqueous emulsion is based on Motoyama Patent No. 3.996.154.

No. 4.143.014 and No. 4.257,995.

The lignocellulosic materials used to make the molded compositions with polyiso7anate binders include wood chips, wood fibers, shavings, planing shavings, wood wool,
Contains products such as cork skin (from wood processing plants). Other natural products that are lignocellulose may also be used, such as fibers from straw, flax residue, dried grass, bean hulls, grains such as rice and barley hulls, and the like. Furthermore, lignocellulosic materials can be mixed with particulate rubber and glass materials as well as virgin flakes or fibrous materials such as glass fibers or wool, mica and asbestos. Lignocellulose may contain a water content of up to 25% by weight, but preferably contains 4 to 12% by weight.

[4, I/V of ie U made of polysiloxane-isocyanate copolymer, the molding agent is 500-150C and the excess formula (rl 9 tl C-110C temperature) In the formula, n is 5 to 30, m is 1 to 20, and XCH3 is -C1l□tJ11, (:1ItJH, -CO(
From JH, -COH or -OHH3CH3, the silanol terminal end with a single exposed core is the main boronoxane and the formula % (wherein 141 is aqueous or alkyl h having 1 to 6 carbon atoms) c9 is produced by reacting with an isocyanate selected from fc brackets], where y is a count of 1 to 20.The polymerization reaction is carried out by reacting free NCs (
It will be considered complete when J cannot be detected using known analytical methods such as infrared radiation. The reaction is carried out in the presence of 0 to 50% by weight of an oil-free aqueous free (dry) solvent (containing no hydroxyl groups) such as an aromatic or aliphatic hydrocarbon such as toluene, xylene, heptane, hexane, etc. Maintain and control the 5-50% solids solution used in the polymer process, preferably produced as a 10-20% solids solution and overused.

As mentioned above, the organopolysiloxane liquid may be used with a self-polymerized polysiloxane isocyanate co-electrometal mold release agent as a diluent and an all-copolymer mold release agent.
M@Polyloxane liquid mixture.

Wl is used on a gold basis with an Ij of () to 25 weight-11j', preferably 10 to 20'+j<JIrk%. The organopolysiloxane liquids used in the present invention are generally alkyl resins having from 1 to 18 carbon atoms bonded to silicon atoms. νIJ of suitable bound polysiloxane liquids are those having alkyl groups such as methyl, ethyl, proyl, phthylhexyl, octyl, defludodecyl, tetradecyl, hexatenyl, octatecyl, etc.; aryl M 911 such as phenyl and naphthyl; It's a no-brainer. Generally, it is preferred that the A4-borin loxane has no terminal hydroxyl groups, although a small number of hydroxyl groups will not substantially affect the mold release composition. Is organopolysiloxane the only molecule that contains a small percentage of one hydroxyl group? Even if there are a small number of molecules that have two hydroxyl groups or have two hydroxyl groups, it is acceptable. However, it is preferred that the above-mentioned polysiloxane contain substantially no hydroxyl groups. Polysiloxane in general! I' has a body of about 3. tl U O~9o,ou
The molecular weight of u (approximately 50 to 100,0 OLI centiboise, preferably 1 (10 to 5,0 (corresponding to a viscosity of 10 centiboise)) must have a total of 1"L. +, 1<
The result of tin is the low assignment ν11 of these ranges, for example l
'l2L) was obtained at U~500 centiboise.

Additionally, delicious and low viscosity pastes can be combined to produce mature products with the desired viscosity range.

41 Kei Poly/Roki Dano, who is included in Takeaki Moto's Eri Ltl;
The formula (wherein R, R' and bi are the same or
represents an alkyl group containing 4 carbon atoms, and y is from 80 to about 150. 111 of +300? 7).

A combination of functional polysiloxane and isocyanate, either alone or in combination with an organic polysiloxane! (A new and unique type of agent (α) that is preferably able to volatilize to its original content to the extent that it evaporates during the process of making melon) Preferred bath agents include toludine, xylene, benzene, naphtha type g agents, higher grade 04-CI. alcohols such as isobutanol and hydrocarbon bath agents such as perchlorethylene.

The functionalized polysiloxane-isocyanate copolymer mold release agent may be applied to the surface of the mold as a concentrated or diluted -fcm* or as a dispersion. and isobutanol and then sprayed, wiped or brushed onto the surface of the mold in the form of a thin film. This is best accomplished by dissolving the mold release composition and rubbing it onto one or more surfaces of the mold with a saturated sponge. However, for fuyoke, a composition is sprayed onto the surface of the mold to form a thin film on top.

Once the mold release composition has been applied to the surface of the mold, it may be used immediately. However, it is preferred that the fabric be dried, especially when a synthetic agent is used.

The surface of the mold was heated to between about 75 and 200C for 1 to 5 minutes to optically cut out all pores and voids and form a substantially permanent mold. Used for demolding or long manufacturing use cycles.

The following examples, including examples of a comparative nature, are provided to illustrate the invention in accordance with the principles of non-invention, but are not set forth in the claims? In particular, it should never be viewed as limiting non-invention.

〔Example〕

Example 1 580? of pine wood chips (dried to 6% moisture content) were placed in an open tumbler mixer. Diphenylmethane diiso7anate polymethylene polyphenylisocyanate (PMDI) with 46.5% diphenylmethane diisocyanate content as an introductory compound of 16y- (PMDI) OA compound was introduced into the air system. 02 four-tipped aluminum fist cowl plates sprayed evenly on top [approx. 30.5 crn x 30.5 crn x
0.48C1n (12" x 12" Polyphenylisocyanate CPMDI > i = total 41m (4
Mold release agent mixture Ic of co-7-part combination of 6,5 tidiphenylmethane diisocyanate content) and 90 parts by weight of toluene
Wipe the ef on an ek-saturated cloth. 2 to copolymer
ii: parts of silanol (-CH20f-4) terminated polydimethyl 70 gisane (molecules i40.uOo) and 1 part by weight i
5 (7) PWi) I f ;) 0 'Q 'F
V was prepared by placing it in a 250 mt valley flask in M% toluene (dry). React the ill, rope, 1' IC with stirring under nitrogen for 4 h at 100 C:
O was detected by infrared analysis because it could not be detected. Toluene was added to prepare a 10% solid bath. Polyink ananide coated wood was then polished [approx. 26.7c]
rn (10,5 inches) square and leopard 30.5 Crn (1
The sludge was supported on a copolymer release agent coated cowl plate and pressed in advance to form a thick mat. The glaze was then removed and Shinji's treated cowl plate was placed on the mat.
.

The whole was heated to a temperature of 190C and pressed to a thickness of 13cm and held for 4 hours to remove pressure over the entire range of 9cm. Lignocellulose Note (Wood Onapu Board) Composite (1) It can be easily released from the cowl board, and the board back-passing procedure described in 1. It was a conquest type.

Example 2 The method of Example 1 was repeated, but an aluminum cowl plate wiped with a silanol-terminated polydimethylsiloxane-isoanate-toluene mold release mixture was heated to 176C for 3 minutes before use. 6 repeated cycles of board manufacturing and 19L) C! il! Six types were recorded.

Examples 3-6 The method of Example 2 was repeated for all combinations of the polysiloxane liquid and core agent described below plus the functional polysiloxane l'MDl described in Example IK. .

80:20 mixture of monokyo-hypoalloy and polydimethylsiloxane liquid 4 Implementation? 'J 2 of 8L of 2-2-2-1-2-2-1-2-1-2-2-1-2-2-2-2-1-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1-2-1-2-1-1-1-2-1-1-1-1-2-2-Rooxane-Iso/Anato- and Bordimethelsiloquin-Gscarbinol (-COi ) terminal borage 56
Garbo? 7 (-〇〇(JH) end zo; ^1 Borijime
6 Narsiloxane (PMDIJ inanate copolymer (diluted to 10% in toluene)) Example 7 IJl method carried out in the form of a total lotion water emulsion νjl l silanol (-C1-120)1) terminated poly I was disappointed when I used dimethylsiloxane (molecular weight 40.0 (JU) and PMD I Kyodo 8 yen?10
% emulsion is 2 parts toluene, 25 parts formula C3-(C(CH2CH20)xH, where X=5)
CF (Triton) C-4s J a-
Ohm FA Haas (2013) produced a mixture of nooctylphenoxybolyethoxyfur 1-hyperethanol and 75 parts of the above formula (where x = 9 to 10). Triton x-1UOJ Rohm
The solution was prepared using 10% of a solution containing octylphenoxypolyethoxylated ethanol from John & Haas. If the temporarily treated cowl plate is used repeatedly, it will heat up to 'fC (
190C) and @7 demolding cycles were carried out at 4 fc O. % water emulsion was used. The emulsion contained 10% otanalphenoxybolyethoxylated ethanol (Example 70) as an emulsifier.
It was attached to carboxy-free 1.11 polydimethylsiloxane and LA-nominated. When the theoretical W+J treated cowl plate was used one time and heated (19t)j;) 8
A demolding cycle was obtained.

9 The method of Example 8 was repeated, but 10,000 parts by weight of phenylmethane diisonoanato/polymethylene polyphenylisocyanate (PtviDI) mixture (-16,
5% diphenylmethane diisocyanate content).

30 rin is part of the liquid polyethylene of trimenalol propane/
Propylene derivative and 10 parts by weight of methoxypolyethylene glycol [Union Carbide 1-' a Corbo L/- Shore (Union Carbide Cor
p, )'s [Sword-Carbowax
) 750 J]F) A 50% water emulsified polypolinoanate binder prepared by LF) was used to mix together. The mixture was heated with stirring at 61°C for 4 hours, then cooled to room temperature and a 50% water emulsion was prepared. Carboxy wood g-plane polydimethyl/loxane/isocyanate combination/
7 times 1 of the cowl board in the IIJφ water emulsion outside the R building
．． I was given an oil type cycle.

10 The method of Example 2 was completely repeated, but the 85 heavy military unit's silanol (-CH20i() Kijiri h A mixture of polydimethylnoroxane (molecular weight 105.OυO) was used.

Release agent treated cowl plate? Stock return and 1st history 04th and 7th. A demolding cycle was obtained.

Ability and seven? 1 Example 2 was repeated but with silanol (-C) 420M)
10 parts by weight of a co-M combination of bed-end polydimethylsiloxane (molecular weight 40, ooo) and phenyliso7anate and 90 parts by weight of toluene were used as mold release agents.

The copolymer has a double portion of -CH20H-terminated monosilanol (
A total of 50 parts by weight of phenylinocyanate with a molecular weight of 40.0 UUJ and 1 part by weight was charged to a 25ON reaction flask in toluene. The reaction was carried out at IUUc under nitrogen for 4 hours with stirring until no free NcU was recovered by infrared analysis. Toluene was added to prepare a 10-diisomer G solution. The coated cowl & was heated as in side 2. After shaping the wooden board ↑y and the original, the rear 7'L was easily released from the cowl plate. Repeat the treatment cowl plate 1
Example 12 Although I was surprised by Example 11', 3 parts by weight of silanol (-C
1-1, (Jl-1) terminal polydimethyl 70xane (
From a copolymer VC with a molecular weight of 40.00 (j) and 1 to 4 parts of hexamethylene diisonoanate, prepared by forming a solid bath liquid of 1 to 10 parts in Example 11. The cowl and fji were fully treated. Six board fabrication and demolding cycles (190'C) were recorded.

Run ν1413 (Z 1) Example 1 was repeated, but no release agent was applied to the cowl plate. The pressed or melted cellulose compound was not molded until it was killed in a cooling bale.

Example 14 (Control) Central JJ Country V IJ I and 2 were repeated, but the 3rd building J! The A-built Kaurui anti is inbutanol allin tQ'-! li'. Mu + stearinated aluminum and lithium histearate were wiped. 41 mold cycles were recorded for each when heated (190C).

Agent: Patent attorney Kazuya Akizawa □'e l'l
Showa 2/July, JBl Junior High, ('1 Ko)?
,c,J,'J 斗111'Lj昭r ter Q 07
rg r no. 2 residence e[)-) and 1ya riff 7ya 1. Low and 'ya raw+i, iA type 4 course'1x
eA3I'The name that stops the mountain- ・Iz' f! Relationship with l 1 series 'A waste 4, substitute
1.12 people Location: Taiyo Building, 12-1 Nihonkabu-cho, Chuo-ku, Tokyo! i+ +l', ,::”1<7 day i j
Showa year month day (shipment) 511...C glaze vinegar

Claims (20)

[Claims] (1) Contacting the lignocellulosic particles with an organic polyisocyanate-based binder composition and forming the treated particles into a molded article by application of heat and pressure. A film coating of a copolymerizable reaction product with an isocyanate is applied to one or more surfaces of the mold to facilitate mold release of the lignocellulosic mold and the functional polysiloxane has the formula ▲ mathematical formula, chemical formula, table, etc. There is ▼ (In the formula, n is an integer from 5 to 30, m is an integer from 1 to 20, and X is -CH_2OH, ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼、−
COOH or -OH) and the isocyanate has the formula R-NCO [wherein R is CH_3(CH_2)_y, -CH_2(C
H_2)_yNCO, ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼, ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ or ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (In the formula, R^1 is hydrogen or 1 to 6 an alkyl group having a carbon atom, and y is an integer of 1 to 20. (2) The method according to claim (1), wherein the lignocellulosic composite is particle board. (3) The lignocellulose composite is heated for about 7 minutes for 1 to 10 minutes.
~42kg/cm^2 (approximately 100psi~600psi
) and a temperature of about 40<0>C to 220<0>C between metal plates. (4) The method according to claim (3), wherein the time is 3 to 5 minutes. (5) One or more surfaces of the coated mold are heated to about 75°C to 20°C for about 1 to 5 minutes before manufacturing the lignocellulose composite molding.
The method according to claim (1), wherein the method is heated at a temperature of 0°C. (6) The method according to claim (1), wherein the organic polyisocyanate binder is diphenylmethane diisocyanate. 7. The method of claim 1, wherein the organic polyisocyanate binder is a polymethylene polyphenyl polyisocyanate containing about 20-85% by weight diphenylmethane diisocyanate. (8) The method according to claim (1), wherein the functional polysiloxane is -CH_2OH-terminated. (9) The method according to claim (1), wherein the functional polysiloxane has a terminal ▲ has a mathematical formula, a chemical formula, a table, etc. ▼. (10) The method according to claim (1), wherein the functional polysiloxane is -COOH-terminated. (11) 20 to 85% by weight of isocyanate in the copolymer
The method according to claim (1), wherein the polymethylene polyphenyl polyisocyanate is a polymethylene polyphenyl polyisocyanate containing diphenylmethane diisocyanate. (12) The method according to claim (1), wherein the isocyanate of the copolymer is hexamethylene diisocyanate. (13) The method according to claim (1), wherein the isocyanate of the copolymer is phenyl isocyanate. (14) Claim No. 1 in which the functional polysiloxane/isocyanate copolymer is applied in a mixture with a solvent.
) Method described in section. (15) Claim No. (14) in which the solvent is toluene
) method described in section. (16) The method according to claim (14), wherein the solvent is isobutanol. (17) Organopolysiloxane liquid 0-25 based on functional polysiloxane/organopolysiloxane liquid mixture
Claim No. (1) adding % by weight as a diluent
The method described in section. (18) The method according to claim (17), wherein the organic polysiloxane liquid is 10 to 20% by weight. (19) In contacting the wood particles with an organic polyisocyanate-based binder composition and forming the treated particles into a board by application of heat and pressure, the functionalized polysiloxane and isocyanate A film coating of a copolymerizable reaction product with is applied to one or more surfaces of the mold to facilitate the release of the lignocellulosic molded product, and the functional polysiloxane has the formula ▲ mathematical formula, chemical formula, table, etc. ▼ (In the formula, n is an integer from 5 to 30, m is an integer from 1 to 20, and −
COOH or -OH) and the isocyanate has the formula R-NCO [wherein R is CH_3(CH_2)_y-, -CH_2(
CH_2)_y-NCO ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼, ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ or ▲ Mathematical formulas,
There are chemical formulas, tables, etc. ▼ (In the formula, R^1 is hydrogen or an alkyl group having 1 to 6 carbon atoms, and y is an integer from 1 to 20.) A manufacturing method for particle board featuring the following. (20) A composition board product comprising a compression-molded lignocellulosic material produced by the method described in claim (1).