WO2013097128A1 - 含磷低分子量聚苯醚树脂的制备方法 - Google Patents

含磷低分子量聚苯醚树脂的制备方法 Download PDF

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WO2013097128A1
WO2013097128A1 PCT/CN2011/084873 CN2011084873W WO2013097128A1 WO 2013097128 A1 WO2013097128 A1 WO 2013097128A1 CN 2011084873 W CN2011084873 W CN 2011084873W WO 2013097128 A1 WO2013097128 A1 WO 2013097128A1
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phosphorus
polyphenylene ether
molecular weight
ether resin
low molecular
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PCT/CN2011/084873
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English (en)
French (fr)
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孟运东
方克洪
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广东生益科技股份有限公司
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Priority to KR1020147004406A priority Critical patent/KR101636628B1/ko
Priority to US14/236,109 priority patent/US8889816B2/en
Priority to EP11879024.5A priority patent/EP2799466A4/en
Priority to PCT/CN2011/084873 priority patent/WO2013097128A1/zh
Publication of WO2013097128A1 publication Critical patent/WO2013097128A1/zh

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/34Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
    • C08G65/48Polymers modified by chemical after-treatment
    • C08G65/485Polyphenylene oxides
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/34Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
    • C08G65/46Post-polymerisation treatment, e.g. recovery, purification, drying
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/34Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
    • C08G65/48Polymers modified by chemical after-treatment
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/49Phosphorus-containing compounds
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/03Use of materials for the substrate
    • H05K1/0313Organic insulating material
    • H05K1/0353Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
    • H05K1/0373Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement containing additives, e.g. fillers
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/0213Electrical arrangements not otherwise provided for
    • H05K1/0237High frequency adaptations
    • H05K1/024Dielectric details, e.g. changing the dielectric material around a transmission line
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/01Dielectrics
    • H05K2201/0104Properties and characteristics in general
    • H05K2201/012Flame-retardant; Preventing of inflammation

Definitions

  • the present invention relates to a process for preparing a polyphenylene ether resin, and more particularly to a process for preparing a phosphorus-containing low molecular weight polyphenylene ether resin.
  • the electronic and electrical industry is developing rapidly, and the development direction of electronic products is thin and light, high performance, high reliability and environmental protection.
  • the specific requirements of electronic circuit boards are also high heat resistance, low thermal expansion coefficient, high heat and humidity resistance, environmentally friendly flame retardancy, low dielectric constant and dielectric loss, and high elastic modulus. Therefore, the conventional epoxy resin can not fully meet the development needs of electronic circuit boards, and the application of polyphenylene ether resin with high heat resistance, low dielectric constant, dielectric loss and toughness in electronic circuit boards is also more The more prominent it is.
  • conventional polyphenylene ether resins are still insufficient in processing due to their high molecular weight.
  • phosphorus-containing compounds are commonly used in the industry to achieve flame retardant effects, such as phosphorus-containing phenanthrene compound DOPO and its derivatives.
  • the halogen-free polyphenylene ether resin compositions currently used for electronic circuit boards generally use an additive type phosphorus-containing flame retardant to achieve flame retardancy requirements, but they are insufficient in heat and humidity resistance and chemical resistance.
  • the phosphorus-containing phenol compound is insoluble in a non-polar solvent such as toluene, the method of redistribution in a solution as reported in Japanese Patent Laid-Open No. Hei 9-235349, Japanese Patent No. 3248424, and the like cannot be produced.
  • a phosphorus-containing low molecular weight polyphenylene ether is obtained. Summary of the invention
  • An object of the present invention is to provide a method for preparing a phosphorus-containing low molecular weight polyphenylene ether resin, which has a good processability and is suitable for use in a base resin for high frequency circuit boards.
  • the present invention provides a process for preparing a phosphorus-containing low molecular weight polyphenylene ether resin, which comprises the steps as follows:
  • Step 1 Providing a phosphorus-containing phenol compound and a raw material polyphenylene ether resin having a number average molecular weight of 10,000 or more;
  • Step 2 dissolving the raw material polyphenylene ether resin in a solvent to prepare a raw material polyphenylene ether resin solution; Step 3. adding the phosphorus-containing phenol compound to the raw material polyphenylene ether resin solution;
  • Step 4 the initiator is introduced, and the reaction temperature is above 60 ° C under the action of the initiator. Distribution reaction
  • Step 5 After the reaction is completed, the product phosphorus-containing low molecular weight polyphenylene ether resin is obtained, and the number average molecular weight thereof is 1000 to 6000.
  • the mass ratio of the raw material polyphenylene ether resin to the phosphorus-containing phenol compound is 100:80 to 100:4.
  • the phosphorus-containing phenol compound is a phosphorus-containing compound containing one or two or more phenolic hydroxyl groups, and the phosphorus-containing phenol compound is 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10- A combination of an oxide and an adduct of benzoquinone, 1,4-tea oxime, p-hydroxybenzaldehyde or rosmarinic acid, and one or more of other phosphorus-containing phenolic compounds, respectively.
  • step 2 the ratio of the raw material polyphenylene ether resin to the solvent is 4:100 ⁇ 200:100, and the solvent is benzene, toluene, xylene, butanone, acetone, n-butanol, isobutanol or isopropanol. One or more combinations.
  • the phosphorus-containing phenol compound is uniformly dispersed in the raw material polyphenylene ether resin solution.
  • the initiator is dicumyl peroxide, t-butyl peroxy cumyl, di-tert-butyl peroxide, tert-butyl peroxydicarbonate, 2,5-dimethyl-2,5-di-tert Butyl cumylperoxyhexyne-3, 2,5-dimethyl 2,5-di-tert-butylperoxyhexane, peroxy-paraben, 1,1-bis(tert-amylperoxy)
  • step 4 the initiator is charged in one or more times; after the initiator is introduced, the reaction material needs to be kept at the reaction temperature for more than 30 minutes.
  • a catalyst is further added, and the catalyst is added before or after the introduction of the initiator, and the catalyst is selected from the group consisting of metal salts of naphthenic acid, vanadium pentoxide, aniline, amine compounds, quaternary ammonium salts, imidazoles and scale salts. One or more.
  • the product phosphorus-containing low molecular weight polyphenylene ether resin is washed with water or an alkali solution, and the washing step is carried out at room temperature or above 60 °C.
  • the present invention produces a phosphorus-containing low molecular weight polyphenylene ether tree by dispersing a phosphorus-containing phenol compound in a raw material polyphenylene ether resin solution and performing a redistribution reaction in the presence of an initiator.
  • the phosphorus-containing low molecular weight polyphenylene ether resin has good processability and is suitable for the addition of matrix resin or other polymer materials of composite materials such as high-frequency circuit boards. detailed description
  • the phosphorus-containing phenolic compound is insoluble in a non-polar solvent such as toluene, and the phosphorus-containing phenolic compound and the high-molecular-weight polyphenylene ether cannot coexist in the same phase, so that the reaction of the conventional solution system cannot be used to obtain a low molecular weight phosphorus-containing low molecular weight poly Diphenyl ether resin.
  • the inventors conducted intensive studies and found that the phosphorus-containing phenol compound is uniformly dispersed in the raw material polyphenylene ether solution, and peroxidized at a certain temperature.
  • the redistribution reaction of the polyphenylene ether can be carried out by the initiation of the substance, and after the reaction, the original two-phase reaction material also becomes one phase, that is, the obtained phosphorus-containing polyphenylene ether resin has 4 in the non-polar solvent. Good solubility.
  • the obtained phosphorus-containing low molecular weight polyphenylene ether resin is excellent in processability, and is suitable for a base resin for a high-frequency circuit board by being blended with a thermosetting resin such as an epoxy resin or a cyanate ester.
  • the present invention provides a method for preparing a phosphorus-containing low molecular weight polyphenylene ether resin, which comprises the steps as follows:
  • Step 1 Providing raw materials: a phosphorus-containing phenol compound and a raw material polyphenylene ether resin having a number average molecular weight of 10,000 or more; under a sufficient initiator and reaction conditions, the higher the proportion of the phosphorus-containing phenol compound, the obtained product polyphenylene ether
  • the lower the number average molecular weight of the resin, the higher the number average molecular weight (Mn) of the polyphenylene ether resin used in the electronic circuit board is generally controlled to be 1000 to 6000. Therefore, the quality of the raw material polyphenylene ether resin and the phosphorus-containing phenol compound is preferred.
  • the ratio is 100:80 ⁇ 100:4.
  • the phosphorus-containing phenol compound is a phosphorus-containing compound containing one or two or more phenolic hydroxyl groups, and the phosphorus-containing phenol compound is 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10- Addition of oxides (DOPO) to phenylhydrazine, 1,4-antimony, p-hydroxybenzaldehyde or rosmarinic acid (DOPO-HQ, DOPO-NQ, DOPO-HPM and DOPO, respectively) -triol, etc., and combinations of one or more of other phosphorus-containing phenolic compounds.
  • DOPO-HQ, DOPO-NQ, DOPO-HPM and DOPO-triol are as follows:
  • Step 2 dissolving the raw material polyphenylene ether resin in a solvent to prepare a polyphenylene ether resin solution; the ratio of the polyphenylene ether resin to the solvent is 4:100 to 200:100, and the polyphenylene ether resin has a number average molecular weight of 10,000.
  • the above commercially available polyphenylene ether resin may be a solvent or a combination of one or more of benzene, toluene, xylene, butanone, acetone, n-butanol, isobutanol or isopropanol.
  • Step 3 Adding a phosphorus-containing phenol compound to the raw material polyphenylene ether resin solution.
  • the phosphorus-containing phenol compound is uniformly dispersed in the raw material polyphenylene ether resin solution.
  • Step 4 The initiator is charged, and the redistribution reaction is carried out under the action of an initiator at a reaction temperature of 60 ° C or higher.
  • the initiator may be fed in a one-time or multiple-time manner, preferably multiple times, more preferably at a rate of 0.1 part by mass or less.
  • the initiator is dicumyl peroxide, t-butyl peroxy cumyl, di-tert-butyl peroxide, tert-butyl peroxydicarbonate, 2,5-dimethyl-2,5-di-tert Butyl cumylperoxyhexyne-3,
  • the reaction temperature is preferably 80 ° C or higher.
  • the reaction material is reacted more rapidly when the reaction temperature is high, but the temperature should be controlled below the boiling point of the solvent. After the initiator is added, the reaction mass is kept at the reaction temperature for more than 30 minutes.
  • a catalyst may also be added to promote the efficiency of the initiator, the catalyst being selected from the group consisting of a metal salt of naphthenic acid, vanadium pentoxide, aniline, an amine compound, a quaternary ammonium salt, an imidazole, and a scaly salt. Or a variety.
  • the catalyst may be added to the reaction mass before or after the initiator is introduced. It is not recommended to mix the catalyst and the initiator together.
  • Step 5 After the reaction is completed, the product phosphorus-containing low molecular weight polyphenylene ether resin is obtained, and the number average molecular weight thereof is 1000 to 6000.
  • the product is preferably washed with water or an alkali solution, and the washing step may be carried out at room temperature or at 60 ° C or higher, preferably at 60 ° C or higher.
  • Example 1 The embodiments of the present invention are described in detail below, but the present invention is not limited to the scope of the embodiments.
  • Example 1
  • the present invention prepares a phosphorus-containing low molecular weight polyphenylene ether resin by dispersing a phosphorus-containing phenol compound in a polyphenylene ether resin solution and performing a redistribution reaction in the presence of an initiator.
  • the low molecular weight polyphenylene ether resin has good processability and is suitable for the addition of matrix resin or other polymer materials of composite materials such as high frequency circuit boards.

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Abstract

一种含磷低分子量聚苯醚树脂的制备方法,包括步骤如下:步骤1、提供含磷酚类化合物及数均分子量10000以上的原料聚苯醚树脂;步骤2、将原料聚苯醚树脂溶解于溶剂中制成原料聚苯醚树脂溶液;步骤3、将含磷酚类化合物加入原料聚苯醚树脂溶液中;步骤4、投入引发剂,在引发剂的作用下于60°C以上反应温度进行再分配反应;步骤5、反应完成后,获得产物含磷低分子量聚苯醚树脂,其数均分子量为1000〜6000。通过将含磷酚类化合物分散于聚苯醚树脂溶液中,在引发剂存在下进行再分配反应制得含磷低分子量聚苯醚树脂,所制得的含磷低分子量聚苯醚树脂工艺性良好,适用于高频电路板等复合材料的基体树脂或其他高分子材料的添加组分。

Description

含磷低分子量聚苯醚树脂的制备方法 技术领域
本发明涉及一种聚苯醚树脂制备方法, 尤其涉及一种含磷低分子量聚 苯醚树脂的制备方法。 背景技术
当前, 电子电气工业发展迅猛, 电子产品的发展方向为轻薄化、 高性 能化、 高可靠性以及环保等。 电子线路板的具体要求也表现为高耐热、 低 热膨胀系数、 高耐湿热、 环保阻燃、 低介电常数和介电损耗及高弹性模量 等。 因此, 传统的环氧树脂已无法完全满足电子线路板的发展需求, 而具 有高耐热性、 低介电常数和介电损耗、 韧性优良的聚苯醚树脂在电子线路 板中的应用也越来越突出。 但是传统的聚苯醚树脂因其分子量过高, 在加 工方面依然存在不足。
由于卤素阻燃对环境的污染等问题, 目前工业上普遍采用含磷化合物 等来实现阻燃效果, 如含磷有菲型化合物 DOPO及其衍生物等。 目前用于 电子线路板的无卤聚苯醚树脂组合物通常采用添加型的含磷阻燃剂实现阻 燃要求, 但其在耐湿热性和耐化学性等方面存在不足。 而且由于含磷的酚 类化合物在甲苯等非极性溶剂中不溶, 所以采用日本特开平 9-235349号公 报、 日本专利第 3248424号公报等文献中报道的在溶液中再分配的方法也 无法制得含磷的低分子量聚苯醚。 发明内容
本发明的目的在于提供一种含磷低分子量聚苯醚树脂的制备方法, 所 得的含磷低分子量聚苯醚树脂工艺性良好, 适用于高频电路板用基体树 脂。
为实现上述目的, 本发明提供一种含磷低分子量聚苯醚树脂的制备方 法, 其包括步骤如下:
步骤 1、 提供含磷酚类化合物及数均分子量 10000 以上的原料聚苯醚 树脂;
步骤 2、 将原料聚苯醚树脂溶解于溶剂中制成原料聚苯醚树脂溶液; 步骤 3、 将含磷酚类化合物加入原料聚苯醚树脂溶液中;
步骤 4、 投入引发剂, 在引发剂的作用下于 60°C以上反应温度进行再 分配反应;
步骤 5、 反应完成后, 获得产物含磷低分子量聚苯醚树脂, 其数均分 子量为 1000~6000。
所述原料聚苯醚树脂与含磷酚类化合物的质量比为 100:80~100:4。 所述含磷酚类化合物为含有一个或两个及其以上酚羟基的含磷化合 物, 该含磷酚类化合物为 9, 10-二氢 -9-氧杂 -10-磷杂菲 -10-氧化物分别与 苯醌、 1,4-茶醌、 对羟基苯马来酰亚胺或玫红酸的加成物, 以及其他含磷 的酚类化合物中的一种或多种的组合。
步骤 2 中, 原料聚苯醚树脂与溶剂的配比为 4:100~200:100, 溶剂为 苯、 甲苯、 二甲苯、 丁酮、 丙酮、 正丁醇、 异丁醇或异丙醇等中的一种或 多种的组合。
步骤 3中, 将含磷酚类化合物均勾分散于原料聚苯醚树脂溶液中。 所述引发剂为过氧化二枯基、 叔丁基过氧化枯基、 过氧化二叔丁基、 过氧化异丙基碳酸叔丁酯、 2,5-二甲基 -2,5-二叔丁基枯基过氧基己炔 -3、 2,5-二甲基 2,5-二叔丁基过氧化己烷、 过氧化对孟烷, 1,1-双(叔戊基过 氧)环己烷、 过氧化氢二异丙基苯、 过氧化苯甲酰、 及过氧化苯甲酰衍生 物中的一种或多种的组合。
步骤 4 中, 引发剂的投入方式为一次性或者多次性加入; 投入引发剂 后反应物料需在反应温度下保温 30分钟以上。
步骤 4 中, 还加入催化剂, 催化剂在引发剂投入前或投入后加入, 所 述催化剂选自环烷酸的金属盐、 五氧化钒、 苯胺、 胺化合物、 季铵盐、 咪 唑以及鱗盐中的一种或多种。
步骤 5 中, 反应完成后, 使用水或碱溶液洗涤产物含磷低分子量聚苯 醚树脂, 该洗涤工序在室温下或 60°C以上进行。
本发明的有益效果: 本发明通过将含磷酚类化合物分散于原料聚苯醚 树脂溶液中, 在引发剂存在下进行再分配反应制得含磷低分子量聚苯醚树 月旨, 所制得的含磷低分子量聚苯醚树脂工艺性良好, 适用于高频电路板等 复合材料的基体树脂或其他高分子材料的添加组分。 具体实施方式
含磷酚类化合物不溶于甲苯等非极性溶剂, 含磷酚类化合物与高分子 量聚苯醚无法共存于同一相中, 因此无法利用传统的溶液体系的反应得到 低分子量的含磷低分子量聚苯醚树脂。 本发明人进行了深入研究, 发现将 含磷酚类化合物均匀分散在原料聚苯醚溶液中, 在一定温度下通过过氧化 物等的引发作用, 可以进行聚苯醚的再分配反应, 并且经过反应后, 原本 两相的反应物料也会成为一相, 即得到的含磷聚苯醚树脂在非极性溶剂中 具有 4艮好的溶解性。 所得含磷低分子量聚苯醚树脂的工艺性良好, 通过与 环氧树脂、 氰酸酯等热固性树脂配合, 适用于高频电路板用基体树脂。
因此, 本发明提供一种含磷低分子量聚苯醚树脂的制备方法, 其包括 步骤如下:
步骤 1、 提供原料: 含磷酚类化合物及数均分子量 10000 以上的原料 聚苯醚树脂; 在充分的引发剂和反应条件下, 含磷酚类化合物的投料比例 越高, 所得产物聚苯醚树脂的数均分子量越低, 一般认为电子线路板中所 用的聚苯醚树脂的数均分子量(Mn )应控制在 1000~6000, 因此, 优选原 料聚苯醚树脂与含磷酚类化合物的质量比为 100:80~100:4。 所述含磷酚类 化合物为含有一个或两个及其以上酚羟基的含磷化合物, 该含磷酚类化合 物为 9, 10-二氢 -9-氧杂 -10-磷杂菲 -10-氧化物 ( DOPO )分别与苯醌、 1,4- 茶醌、 对羟基苯马来酰亚胺或玫红酸等的加成物 (分别为 DOPO-HQ、 DOPO-NQ、 DOPO-HPM和 DOPO-triol等 ) , 以及其他含磷的酚类化合物 中的一种或多种的组合。 DOPO-HQ、 DOPO-NQ、 DOPO-HPM 和 DOPO- triol的化学结构式分别如下所示:
式一: DOPO-HQ 式二: DOPO-NQ
Figure imgf000004_0001
式四: DOPO-triol
Figure imgf000004_0002
步骤 2、 将原料聚苯醚树脂溶解于溶剂中制成聚苯醚树脂溶液; 聚苯 醚树脂与溶剂的配比为 4: 100~200:100, 该原料聚苯醚树脂采用数均分子量 10000 以上的市售聚苯醚树脂即可, 溶剂为苯、 甲苯、 二甲苯、 丁酮、 丙 酮、 正丁醇、 异丁醇或异丙醇等中的一种或多种的组合。
步骤 3、 将含磷酚类化合物加入原料聚苯醚树脂溶液中。 在本发明 中, 需将含磷酚类化合物均匀分散于原料聚苯醚树脂溶液中。
步骤 4、 投入引发剂, 在引发剂的作用下于 60°C以上反应温度进行再 分配反应。 引发剂的投入方式可以是一次性或者多次性加入, 优选多次性 加入, 更优选为以 0.1质量份 /分钟以下的速度加入。
所述引发剂为过氧化二枯基、 叔丁基过氧化枯基、 过氧化二叔丁基、 过氧化异丙基碳酸叔丁酯、 2,5-二甲基 -2,5-二叔丁基枯基过氧基己炔 -3、
2,5-二甲基 2,5-二叔丁基过氧化己烷、 过氧化对孟烷, 1,1-双(叔戊基过 氧)环己烷、 过氧化氢二异丙基苯、 过氧化苯甲酰、 过氧化苯甲酰衍生物 等过氧化物中的一种或多种的组合。
所述反应温度优选 80 °C以上, 反应温度高时反应物料反应进行得越 快, 但应将温度控制在溶剂的沸点以下。 加入引发剂后反应物料需在反应 温度下保温 30分钟以上。
该步骤中, 还可加入催化剂, 以促进引发剂的效率, 所述催化剂选自 环烷酸的金属盐、 五氧化钒、 苯胺、 胺化合物、 季铵盐、 咪唑以及鱗盐等 中的一种或多种。 催化剂可以在引发剂投入前或投入后加入反应物料中, 不建议将催化剂和引发剂混合后一起加入。
步骤 5、 反应完成后, 获得产物含磷低分子量聚苯醚树脂, 其数均分 子量为 1000~6000。 该步骤中, 反应完成后, 优选使用水或碱溶液洗涤产 物, 该洗涤工序可在室温下实施, 也可在 60°C以上进行, 优选在 60°C以 上进行。
兹将本发明实施例详细说明如下, 但本发明并非局限在实施例范围。 实施例 1
在带有搅拌、 测温和冷凝装置的反应容器中加入 100 份甲苯作为溶 剂, 加入 50 份数均分子量为 20000 的原料聚苯醚(旭化成化学株式会 社, 商品名: S201A ) , 加热至 90°C并搅拌使原料聚苯醚完全溶解。 将 10 份 DOPO-HQ (惠州盛世达科技有限公司, 商品名: ODOPB ) 均匀分散于 反应物料中。 然后向其中用 40分钟添加 8份过氧化苯甲酰(东莞康新试 剂, 商品名: 过氧化苯甲酰) , 在 90°C反应 120分钟。 降温, 用碳酸氢钠 水溶液充分洗涤, 然后除去水溶液。 产物为黄褐色透明溶液, 无悬浮物, 用 GPC法测得产物数均分子量(Mn ) 为 2670, 分子量分布为 ( Mw/Mn ) 为 2.3, 即得含磷低分子量聚苯醚树脂。
实施例 2
在带有搅拌、 测温和冷凝装置的反应容器中加入 100 份甲苯作为溶 剂, 加入 50 份数均分子量为 20000 的原料聚苯醚(旭化成化学株式会 社, 商品名: S201A ) , 加热至 90°C并搅拌使原料聚苯醚完全溶解。 将 8 份 DOPO-HQ (惠州盛世达科技有限公司, 商品名: ODOPB ) 均匀分散于 反应物料中。 然后向其中用 40分钟添加 6份过氧化苯甲酰(东莞康新试 剂, 商品名: 过氧化苯甲酰) , 在 90°C反应 120分钟。 降温, 用碳酸氢钠 水溶液充分洗涤, 然后除去水溶液。 产物为黄褐色透明溶液, 无悬浮物, 用 GPC法测得产物数均分子量(Mn ) 为 3015 , 分子量分布为 (Mw/Mn ) 为 2.2, 即得含磷低分子量聚苯醚树脂。
综上所述, 本发明通过将含磷酚类化合物分散于聚苯醚树脂溶液中, 在 I发剂存在下进行再分配反应制得含磷低分子量聚苯醚树脂, 所制得的 含磷低分子量聚苯醚树脂工艺性良好, 适用于高频电路板等复合材料的基 体树脂或其他高分子材料的添加组分。
以上所述, 对于本领域的普通技术人员来说, 可以根据本发明的技术 方案和技术构思做出其他各种相应的改变和变形, 而所有这些改变和变形 都应属于本发明所保护的范围。

Claims

权 利 要 求
1、 一种含磷低分子量聚苯醚树脂的制备方法, 其包括步骤如下: 步骤 1、 提供含磷酚类化合物及数均分子量 10000 以上的原料聚苯醚 树脂;
步骤 2、 将原料聚苯醚树脂溶解于溶剂中制成原料聚苯醚树脂溶液; 步骤 3、 将含磷酚类化合物加入原料聚苯醚树脂溶液中;
步骤 4、 投入引发剂, 在引发剂的作用下于 60°C以上反应温度进行再 分配反应;
步骤 5、 反应完成后, 获得产物含磷低分子量聚苯醚树脂, 其数均分 子量为 1000~6000。
2、 如权利要求 1 所述的含磷低分子量聚苯醚树脂的制备方法, 其 中, 所述原料聚苯醚树脂与含磷酚类化合物的质量比为 100:80~100:4。
3、 如权利要求 1 所述的含磷低分子量聚苯醚树脂的制备方法, 其 中, 所述含磷酚类化合物为含有一个或两个及其以上酚羟基的含磷化合 物, 该含磷酚类化合物为 9, 10-二氢 -9-氧杂 -10-磷杂菲 -10-氧化物分别与 苯醌、 1,4-茶醌、 对羟基苯马来酰亚胺或玫红酸的加成物, 以及其他含磷 的酚类化合物中的一种或多种的组合。
4、 如权利要求 1 所述的含磷低分子量聚苯醚树脂的制备方法, 其 中, 步骤 2 中, 原料聚苯醚树脂与溶剂的配比为 4:100~200:100, 溶剂为 苯、 甲苯、 二甲苯、 丁酮、 丙酮、 正丁醇、 异丁醇或异丙醇中的一种或多 种的组合。
5、 如权利要求 1 所述的含磷低分子量聚苯醚树脂的制备方法, 其 中, 步骤 3中, 将含磷酚类化合物均勾分散于原料聚苯醚树脂溶液中。
6、 如权利要求 1 所述的含磷低分子量聚苯醚树脂的制备方法, 其 中, 所述引发剂为过氧化二枯基、 叔丁基过氧化枯基、 过氧化二叔丁基、 过氧化异丙基碳酸叔丁酯、 2,5-二甲基 -2,5-二叔丁基枯基过氧基己炔 -3、 2,5-二甲基 2,5-二叔丁基过氧化己烷、 过氧化对孟烷, 1,1-双(叔戊基过 氧)环己烷、 过氧化氢二异丙基苯、 过氧化苯甲酰、 及过氧化苯甲酰衍生 物中的一种或多种的组合。
7、 如权利要求 1 所述的含磷低分子量聚苯醚树脂的制备方法, 其 中, 步骤 4 中, 引发剂的投入方式为一次性或者多次性加入; 投入引发剂 后反应物料需在反应温度下保温 30分钟以上。
8、 如权利要求 1 所述的含磷低分子量聚苯醚树脂的制备方法, 其 中, 步骤 4 中, 还加入催化剂, 催化剂在引发剂投入前或投入后加入, 所 述催化剂选自环烷酸的金属盐、 五氧化钒、 苯胺、 胺化合物、 季铵盐、 咪 唑以及鱗盐中的一种或多种。
9、 如权利要求 1 所述的含磷低分子量聚苯醚树脂的制备方法, 其 中, 所述步骤 5 , 反应完成后, 使用水或碱溶液洗涤产物含磷低分子量聚 苯醚树脂, 该洗涤工序在室温下或 60°C以上进行磷阻燃剂为缩合磷酸酯类 及磷腈化合物类阻燃剂中的一种或者多种的组合。
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