JPH047315A - Preparation of melamine resin and molding material prepared from the resin - Google Patents
Preparation of melamine resin and molding material prepared from the resinInfo
- Publication number
- JPH047315A JPH047315A JP10925390A JP10925390A JPH047315A JP H047315 A JPH047315 A JP H047315A JP 10925390 A JP10925390 A JP 10925390A JP 10925390 A JP10925390 A JP 10925390A JP H047315 A JPH047315 A JP H047315A
- Authority
- JP
- Japan
- Prior art keywords
- melamine
- melamine resin
- resin
- molding material
- formaldehyde
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920000877 Melamine resin Polymers 0.000 title claims abstract description 47
- 239000004640 Melamine resin Substances 0.000 title claims abstract description 30
- 239000012778 molding material Substances 0.000 title claims description 16
- 229920005989 resin Polymers 0.000 title description 7
- 239000011347 resin Substances 0.000 title description 7
- 238000002360 preparation method Methods 0.000 title 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 47
- -1 glycidyl ester Chemical class 0.000 claims abstract description 19
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000007787 solid Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000000376 reactant Substances 0.000 claims description 6
- 239000000047 product Substances 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- KBWLNCUTNDKMPN-UHFFFAOYSA-N bis(oxiran-2-ylmethyl) hexanedioate Chemical compound C1OC1COC(=O)CCCCC(=O)OCC1CO1 KBWLNCUTNDKMPN-UHFFFAOYSA-N 0.000 abstract description 6
- 239000007795 chemical reaction product Substances 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- 239000002904 solvent Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 229920001223 polyethylene glycol Polymers 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000002202 Polyethylene glycol Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000006082 mold release agent Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009863 impact test Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 238000010517 secondary reaction Methods 0.000 description 2
- GVNVAWHJIKLAGL-UHFFFAOYSA-N 2-(cyclohexen-1-yl)cyclohexan-1-one Chemical compound O=C1CCCCC1C1=CCCCC1 GVNVAWHJIKLAGL-UHFFFAOYSA-N 0.000 description 1
- AOBIOSPNXBMOAT-UHFFFAOYSA-N 2-[2-(oxiran-2-ylmethoxy)ethoxymethyl]oxirane Chemical compound C1OC1COCCOCC1CO1 AOBIOSPNXBMOAT-UHFFFAOYSA-N 0.000 description 1
- 101150065749 Churc1 gene Proteins 0.000 description 1
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 1
- 102100038239 Protein Churchill Human genes 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229940037312 stearamide Drugs 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Epoxy Resins (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、メラミン樹脂の製造方法および、その成形材
料に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for producing melamine resin and a molding material thereof.
メラミン樹脂の成形材料を加熱加圧成形して硬化させた
成形品は、固（て丈夫な反面、柔軟性に欠けるため衝撃
や曲げのたわみ、引張の伸びに弱くクラックを生じたり
、破壊してしまう問題があった。これまでにメラミンに
ポリエチレングリコールグリシジルエーテルとホルムア
ルデヒドを反応させ、柔軟性に優れたメラミン樹脂を合
成する技術が、特開昭５９−４７２５３号公報に開示さ
れている、すなわち、ポリエチレングリコールグリシジ
ルエーテルと反応させ、メラミン樹脂の架橋構造にＣＨ
” ＣＨＣＨ！−のソフトセグメントを導入することに
より上記問題点は解決できるとした技術である。この技
術では、メラミン樹脂成形品の耐衝撃に対し効果を有す
るが、吸水率も大きくなり、耐水性に問題を有している
。Molded products made from melamine resin molding materials that are cured by heating and pressure molding are hard and durable, but because they lack flexibility, they are susceptible to impact, bending, and tensile elongation, causing them to crack or break. Until now, a technique for synthesizing melamine resin with excellent flexibility by reacting melamine with polyethylene glycol glycidyl ether and formaldehyde has been disclosed in JP-A-59-47253, that is, By reacting with polyethylene glycol glycidyl ether, CH is added to the crosslinked structure of melamine resin.
” This technology claims that the above problems can be solved by introducing the soft segment of CHCH!-.This technology has an effect on the impact resistance of melamine resin molded products, but it also increases water absorption and reduces water resistance. I have a problem with this.
本発明は、耐衝撃性と耐水性に優れたメラミン樹脂成形
品を与えるメラミン樹脂の製造方法、および、その成形
材料を提供することにある。The present invention provides a method for producing a melamine resin molded article having excellent impact resistance and water resistance, and a molding material thereof.
本発明者は、上記課題を解決するために、グリシジルエ
ステル化合物（Ｇ）とメラミン（Ｍ）を下記０式のモル
比の範囲で反応させ、次いでこの反応物に下記■式のモ
ル比の範囲でホルムアルデヒド（Ｆ）を反応させた後、
反応物を固形化することを特徴とするメラミン樹脂の製
造方法とＧ／Ｍ＝０．０５〜５．０・・・・・・■Ｆ／
ＩＭ−Ｇ｜＝１．０〜３．０・・・・・・■この固型の
メラミン樹脂を含んでいることを特徴とする成形材料を
提供することにある。In order to solve the above problems, the present inventors reacted a glycidyl ester compound (G) and melamine (M) in a molar ratio range of the following formula 0, and then added this reactant to a molar ratio range of the following formula (1). After reacting formaldehyde (F) with
Method for producing melamine resin characterized by solidifying a reactant and G/M=0.05-5.0...■F/
IM-G|=1.0-3.0... ■An object of the present invention is to provide a molding material characterized by containing this solid melamine resin.
以下、この発明の詳細な説明する。The present invention will be explained in detail below.
グリシジルエステル化合物は分子の末端にであり、アジ
ピン酸ジグリシジルエステル、オルソ−フタル酸ジグリ
シジルエステルや５Ｒ−ＣＦ２（版本薬品工業製）など
を用いることができる。The glycidyl ester compound is at the terminal of the molecule, and adipic acid diglycidyl ester, ortho-phthalic acid diglycidyl ester, 5R-CF2 (manufactured by Hanmoto Yakuhin Kogyo), etc. can be used.
本発明のメラミン樹脂の製造方法の反応の際の各成分の
配合量は、メラミンのモル数をＭ、グリシジルエステル
化合物のモル数を０１ホルムアルデヒドのモル数をＦと
すると、メラミンに対するグリシジルエステル化合物の
モル比が
Ｇ／Ｍ＝０．０５〜５．０
メラミンとグリシジルエステル化合物のモル数の差の絶
対値に対するホルムアルデヒドのモル数がＦ／ＩＭ−Ｇ
ｌ＝１．０〜３．０
となるようにその範囲を設定する必要がある。The blending amount of each component during the reaction in the method for producing melamine resin of the present invention is as follows: M is the number of moles of melamine, 0 is the number of moles of the glycidyl ester compound, and F is the number of moles of formaldehyde. The molar ratio is G/M=0.05-5.0 The number of moles of formaldehyde relative to the absolute value of the difference in the number of moles between melamine and glycidyl ester compound is F/IM-G
It is necessary to set the range so that l=1.0 to 3.0.
メラミン対するグリシジルエステル化合物のモル数が０
．０５未満であるとグリシジルエステル化合物による変
性が不十分で、柔軟性に冨むメラミン樹脂を得ることが
できず、また、２０モル比が５．０を越えると反応系で
のグリシジルエステル化合物の量が多くなり過ぎてゲル
化が起こり易くなり、メラミン樹脂を安定して得ること
ができないからである。The number of moles of glycidyl ester compound relative to melamine is 0
．． If the molar ratio is less than 05, the modification with the glycidyl ester compound will be insufficient, making it impossible to obtain a melamine resin with high flexibility, and if the molar ratio of 20 exceeds 5.0, the amount of the glycidyl ester compound in the reaction system will be reduced. This is because if the amount of melamine resin increases too much, gelation tends to occur, making it impossible to stably obtain a melamine resin.
さらに、メラミンとグリシジルエステル化合物のモル数
の差の絶対値に対するホルムアルデヒドのモル数が１．
０未満であるとホルムアルデヒドの配合量が不十分で、
メラミン樹脂を十分に架橋硬化させることができず、こ
のモル比が３．０を越えるとホルムアルデヒドが過多と
なってメラミン樹脂の架橋密度が高くなり過ぎ、メラミ
ン樹脂の柔軟性が低下し、曲げのたわみや引張の伸びが
小さくなるのである。Furthermore, the number of moles of formaldehyde relative to the absolute value of the difference in the number of moles between melamine and the glycidyl ester compound is 1.
If it is less than 0, the amount of formaldehyde is insufficient,
If the melamine resin cannot be crosslinked and cured sufficiently and the molar ratio exceeds 3.0, formaldehyde will be too much and the crosslinking density of the melamine resin will become too high, reducing the flexibility of the melamine resin and making it difficult to bend. This reduces deflection and tensile elongation.
メラミンをグリシジルエステル化合物、ホルムアルデヒ
ドと反応させ、固形のメラミン樹脂を製造方法は次のよ
うな工程からなる。The method for producing solid melamine resin by reacting melamine with a glycidyl ester compound and formaldehyde consists of the following steps.
まず、１次反応としてメラミンとグリシジルエステル化
合物とを反応させ、次に２次反応としてこの反応物とホ
ルムアルデヒドとを反応させる樹脂合成工程と、この樹
脂反応物から溶媒を除去する固形化工程からなる。First, it consists of a resin synthesis step in which melamine and a glycidyl ester compound are reacted as a first reaction, and then this reactant is reacted with formaldehyde as a second reaction, and a solidification step in which the solvent is removed from this resin reactant. .
１次反応はメラミンのアミノ基にグリシジルエステル化
合物のエポキシ基が開環して脱水付加する反応と考えら
れる。２次反応はメラミンの未反応のアミノ基にホルム
アルデヒドが脱水付加する反応と考えられる。１次反応
は８０〜１００℃程度の温度で１０〜１５０分間程度お
こなうのが望ましく、また２次反応は５０〜１００℃程
度の温度で１０〜９０分間程度おこなわせるように条件
を設定するのが望ましい、この反応の結果得られるもの
はシラツブ状であり、このシラツブから脱溶媒すること
によってグリシジルエステル化合物で変性された固形の
メラミン樹脂を得ることができる。脱溶媒に際しては樹
脂をさらに高分子化する反応が進行するような条件がよ
い。このために脱溶媒は加熱を伴う工法が好ましく、真
空加熱脱水法やスプレードライヤー法、ＷＦＥ（Ｉ膜蒸
発法）などの方法を好ましい方法として用いることがで
きる。The first reaction is considered to be a reaction in which the epoxy group of the glycidyl ester compound opens the ring and adds dehydration to the amino group of melamine. The secondary reaction is considered to be a reaction in which formaldehyde is dehydrated and added to the unreacted amino groups of melamine. It is desirable to set the conditions so that the first reaction is carried out at a temperature of about 80 to 100°C for about 10 to 150 minutes, and the secondary reaction is carried out at a temperature of about 50 to 100°C for about 10 to 90 minutes. Desirably, the product obtained as a result of this reaction is in the form of a slag, from which a solid melamine resin modified with a glycidyl ester compound can be obtained by removing the solvent. When removing the solvent, it is preferable to use conditions that allow the reaction to further polymerize the resin to proceed. For this purpose, a method involving heating is preferable for removing the solvent, and methods such as a vacuum heating dehydration method, a spray dryer method, and WFE (I film evaporation method) can be used as preferred methods.
前記の脱溶媒後、乾燥して得られるグリシジルエステル
化合物で変性された固形のメラミン樹脂は粉砕して、通
常用いられる充填材、たとえばセルローズ、サルファイ
ドパルプ、木粉、布切れ、糸屑、紙などの有機充填材や
ガラス粉、ガラス繊維、雲母、タルク、シリカなどの無
機充填材など、さらに、離型剤、硬化剤、顔料、可塑剤
など通常用いられるものを用途、成形条件などに応じて
適宜用いることによって成形材料とすることができる。After the above-described solvent removal, the solid melamine resin modified with the glycidyl ester compound obtained by drying is pulverized and mixed with commonly used fillers such as cellulose, sulfide pulp, wood flour, cloth scraps, thread waste, paper, etc. organic fillers and inorganic fillers such as glass powder, glass fiber, mica, talc, and silica, as well as commonly used materials such as mold release agents, curing agents, pigments, and plasticizers, depending on the application and molding conditions. By using it appropriately, it can be made into a molding material.
製造に際しては、通常用いられる工法、装置をそのまま
用いて成形材料を調製することができる。During production, the molding material can be prepared using commonly used construction methods and equipment as they are.
この成形材料は圧縮成形、トランスファー成形、射出成
形などによって成形品を形成することができる。This molding material can be used to form a molded article by compression molding, transfer molding, injection molding, or the like.
なお、上記の充填材の配合量は、前記固型のメラミン樹
脂３０〜９５重量部に対して５〜７０重量部の範囲で用
いることが耐衝撃性と耐水性をともに満足させる上で望
ましい、さらに、硬化剤、離型剤、顔料、可塑側など用
途、成形条件などに応じて適量配合して用いることがで
きる。In addition, it is desirable to use the above-mentioned filler in an amount of 5 to 70 parts by weight based on 30 to 95 parts by weight of the solid melamine resin in order to satisfy both impact resistance and water resistance. Furthermore, suitable amounts of curing agents, mold release agents, pigments, plasticizers, etc. can be added depending on the application, molding conditions, and the like.
前記の脱溶媒したグリシジルエステル化合物で変性され
た固形のメラミン樹脂は、上記の成形材料のほか、他の
樹脂の柔軟性付与材としてユリア樹脂、フェノール樹脂
、不飽和ポリエステル樹脂、エポキシ樹脂、およびこれ
らの変性樹脂などに添加して用いることもできる。The solid melamine resin modified with the desolvated glycidyl ester compound can be used as a flexibility imparting agent for other resins, such as urea resin, phenol resin, unsaturated polyester resin, epoxy resin, and these resins, in addition to the above molding materials. It can also be used by adding it to modified resins.
次に本発明を実施例と比較例によって具体的に説明する
。Next, the present invention will be specifically explained using Examples and Comparative Examples.
実施例 ｌ
Ｇ／Ｍ＝０．０８．Ｆ／（Ｍ−Ｃ，）＝１．１モル比の
配合量となるように、Ｍで表したメラミン（口座化学工
業）、Ｇで表したアジピン酸ジグリシジルエステル（長
瀬化成工業）を撹拌翼、還流管付の３つロフラスコに仕
込み、１次反応を９２±２°Ｃで６０分間した後、この
反応物にＦで表したホルムアルデヒドとして４０％ホル
マリンを仕込み、２次反応を８０±３°Ｃで５０分間お
こないグリシジル化合物で変性したメラミン樹脂のシラ
ツブを得た０次に、このメラミン樹脂シラツブを真空ニ
ーグーに投入し、６００腫Ｈｇに減圧して１００°Ｃま
で加熱して真空加熱脱水し、グリシジル化合物で変性し
た固形メラミン樹脂を得た。この変性した固形メラミン
を７０重量部に対して充填材として粉末パルプ３０重量
部、硬化剤として１０％の無水フタル酸のマスターバッ
チ３重量部、離型剤としてステアリン酸亜鉛０．８重量
部とステアリン酸アマイド０．２重量部を加えてポット
ミルに投入し、３時間回転させて粉末成形材料を調製す
る。Example l G/M=0.08. Melamine (M) (Kaguchi Kagaku Kogyo) and adipic acid diglycidyl ester (G) (Nagase Kasei Kogyo) were mixed with a stirring blade so that the molar ratio of F/(M-C,) was 1.1. After the first reaction was carried out at 92±2°C for 60 minutes, 40% formalin was added to the reaction mixture as formaldehyde, and the second reaction was carried out at 80±3°C. C for 50 minutes to obtain a melamine resin stubble modified with a glycidyl compound.Next, the melamine resin sill stub was placed in a vacuum tube, the pressure was reduced to 600 mHg, and the mixture was heated to 100°C for vacuum heat dehydration. A solid melamine resin modified with a glycidyl compound was obtained. For 70 parts by weight of this modified solid melamine, 30 parts by weight of powder pulp as a filler, 3 parts by weight of a masterbatch of 10% phthalic anhydride as a hardening agent, and 0.8 parts by weight of zinc stearate as a mold release agent. Add 0.2 parts by weight of stearamide, charge the mixture into a pot mill, and rotate for 3 hours to prepare a powder molding material.
実施例 ２
実施例１のメラミン（Ｍ）、アジピン酸ジグリシジルエ
ステルの（Ｇ）、そしてホルムアルデヒド（Ｆ）の仕込
みモル比を次のように変えた以外は実施例１と同様にし
て粉状成形材料を得る。Example 2 Powder molding was carried out in the same manner as in Example 1 except that the molar ratios of melamine (M), adipate diglycidyl ester (G), and formaldehyde (F) were changed as follows. Get the materials.
Ｇ／Ｍ＝０．５ 、Ｆ／（Ｍ−Ｇ）＝２．０゜実施例
３
実施例１のメラミン（Ｍ）、アジピン酸ジグリシジルエ
ステルの（Ｇ）、そしてホルムアルデヒド（Ｆ）の仕込
みモル比を次のように変えた以外は実施例１と同様にし
て粉状成形材料を得る。G/M=0.5, F/(MG)=2.0゜Example 3 Charge moles of melamine (M), adipate diglycidyl ester (G), and formaldehyde (F) in Example 1 A powdered molding material was obtained in the same manner as in Example 1 except that the ratio was changed as follows.
Ｇ／Ｍ＝４．０ 、Ｆ／（Ｇ−Ｍ）＝２．５゜比較例
１
実施例１のアジピン酸ジグリシジルエステルの（Ｇ）に
変えて、ポリエチレングリコールジグリシジルエーテル
（ＰＥＧ）を用い、次の仕込みモル比に変えた以外は実
施例１と同様にして粉状成形材料を得る。 ＧＥＧ／
Ｍ＝０．１８Ｆ／ （Ｍ−ＧＥＧ）＝３．０゜
以上で得た各成形材料を用いてＪ Ｉ Ｓ −Ｋ６９１
１に準拠して３７トンプレス成形機で金型温度１５５°
Ｃ１３分間の条件で成形し、テストピースを作成した。G/M = 4.0, F/(GM) = 2.5° Comparative Example 1 Polyethylene glycol diglycidyl ether (PEG) was used in place of (G) of adipic acid diglycidyl ester in Example 1. A powdered molding material was obtained in the same manner as in Example 1, except that the following molar ratios were used. GEG/
JIS-K691 using each molding material obtained at M=0.18F/(M-GEG)=3.0° or more
1, the mold temperature is 155° with a 37 ton press molding machine.
A test piece was prepared by molding for 13 minutes.
このテストピースについてＪ Ｉ Ｓ −Ｋ６９１１に
準拠してシャルピー衝撃、吸水率を、さらにデュポン衝
撃のそれぞれの試験を行いその結果を第１表に示した。This test piece was subjected to Charpy impact, water absorption, and DuPont impact tests in accordance with JIS-K6911, and the results are shown in Table 1.
なお、デュポン衝撃の試験方法は、４Ｒの丸みを有する
ポンチを、φ５０■厚み３閣の円板に垂直に立て、５０
０ｇのおもりを一定の高さから５回落下し、円板に異状
がなければ、さらに高さを増して同様の試験を続ける０
円板が破壊した高さ、おもりおよび、重力加速度の積と
して１夏して求めたものだある。In addition, the DuPont impact test method is to hold a punch with a 4R radius vertically on a circular plate with a diameter of 50 mm and a thickness of 3 mm.
Drop a 0g weight from a certain height 5 times, and if there is no problem with the disc, increase the height and continue the same test.
It was calculated over one summer as the product of the height at which the disk broke, the weight, and the gravitational acceleration.
第１表から本発明による固型のメラミン樹脂を含む成形
材料で形成された実施例１〜３の成形品は、比較例１の
従来例の成形品に比べ優れた衝撃特性を維持しつつ吸水
率の良好なことがが確認できた。
（以 下 余 白）第１表
（以 下 余 白）
〔発明の効果〕
本発明の製造方法で作られるメラミン樹脂を含む成形材
料によって耐衝撃性と耐水性に優れたメラミン樹脂成形
品を得ることができるのである。Table 1 shows that the molded products of Examples 1 to 3 made of the molding material containing solid melamine resin according to the present invention can absorb water while maintaining superior impact properties compared to the conventional molded product of Comparative Example 1. It was confirmed that the rate was good.
(Hereinafter in the margin) Table 1 (Hereinafter in the margin) [Effects of the invention] A melamine resin molded product with excellent impact resistance and water resistance is obtained using a molding material containing a melamine resin produced by the production method of the present invention. It is possible.
特許出願人 松下電工株式会社Patent applicant Matsushita Electric Works Co., Ltd.
Claims (1)
）を下記［１］式のモル比の範囲で反応させ、次いで、
この反応物に下記［２］式のモル比の範囲でホルムアル
デヒド（Ｆ）を反応させた後、反応物を固形化すること
を特徴とするメラミン樹脂の製造方法。 Ｇ／Ｍ＝０．０５〜５．０・・・・・・［１］Ｆ／｜Ｍ
−Ｇ｜＝１．０〜３．０・・・・・・［２］（２）前記
固型のメラミン樹脂を含んでいることを特徴とする成形
材料。(1) Glycidyl ester compound (G) and melamine (M
) are reacted within the molar ratio range of the following formula [1], and then
A method for producing a melamine resin, which comprises reacting this reactant with formaldehyde (F) in a molar ratio range of formula [2] below, and then solidifying the reactant. G/M=0.05~5.0...[1]F/|M
-G|=1.0-3.0...[2] (2) A molding material characterized by containing the solid melamine resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10925390A JPH047315A (en) | 1990-04-25 | 1990-04-25 | Preparation of melamine resin and molding material prepared from the resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10925390A JPH047315A (en) | 1990-04-25 | 1990-04-25 | Preparation of melamine resin and molding material prepared from the resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH047315A true JPH047315A (en) | 1992-01-10 |
Family
ID=14505492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10925390A Pending JPH047315A (en) | 1990-04-25 | 1990-04-25 | Preparation of melamine resin and molding material prepared from the resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH047315A (en) |
-
1990
- 1990-04-25 JP JP10925390A patent/JPH047315A/en active Pending
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