CN85100468A - 四氟乙烯、乙烯三元共聚物的生产方法 - Google Patents
四氟乙烯、乙烯三元共聚物的生产方法 Download PDFInfo
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- CN85100468A CN85100468A CN198585100468A CN85100468A CN85100468A CN 85100468 A CN85100468 A CN 85100468A CN 198585100468 A CN198585100468 A CN 198585100468A CN 85100468 A CN85100468 A CN 85100468A CN 85100468 A CN85100468 A CN 85100468A
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- Prior art keywords
- tetrafluoroethylene
- ethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F214/18—Monomers containing fluorine
- C08F214/26—Tetrafluoroethene
- C08F214/265—Tetrafluoroethene with non-fluorinated comonomers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/02—Ethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2438/00—Living radical polymerisation
- C08F2438/01—Atom Transfer Radical Polymerization [ATRP] or reverse ATRP
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
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- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
一种含有四氟乙烯、乙烯三元共聚物的生产
方法,本法在四氟乙烯-乙烯溶液沉淀聚合体系
中,用过碳酸酯作引发剂,1,2,2-三氯,1,2,
2-三氟乙烷作介质。选用分子式为CnR2n+2的
化合物作气相链调节剂控制共聚物分子量。其中
n=0,1或2,R=H,Cl或F。分子式为CF2
XOCF2X′或
的化合物作第三单
体,其中X=X′=Cl或F,R=CF3或CH3,
R′=CF3,CH3或H,R″=H或F。共聚物内
单体克分子组成为四氟乙烯60-40%,乙烯40-
60%,第三单体为前二者总和的0.1-10%。
Description
本发明属于含氟共聚物的制备。涉及四氟乙烯、乙烯及含有少量第三单体三元共聚物的制备方法。
为获得高质量四氟乙烯-乙烯共聚物,迄今已从聚合方法和第三单体上作了很多的努力(Encyclo.of polym.Sci.and tech.suppl.Voll.P 197)。七十年代初发展的溶液沉淀聚合法〔U.S.P.3,624,259(1971)〕,用于四氟乙烯-乙烯共聚,在聚合反应开始后迅速产生沉淀,聚合体系粘度急骤增大,大分子链末端自由基终止碰撞几率亦将相应减小,在聚合反应后期,链增长速度将远大于链终止速度,出现明显的聚合加速现象,造成共聚物平均分子量迅速增大和局部聚合反应过热状态,因而共聚物平均分子量的控制对溶液沉淀聚合法来说是个十分重要的课题,美国专利(U.S.P.3、624,250)中应用R-CF=CF2和ROCF=CF2为第三单体,其中R为R1烷基或芳基,以达到改善四氟乙烯-乙烯共聚物的高温性能,但第三单体价格较贵。曾有专利Ger.off.2,355,469(1974)采用较简单第三单体(如CF3CF=CF2和CF3CH=CH2)于悬浮(包括水加有机相)或乳液聚合法制备四氟乙烯-乙烯三元共聚物,虽然介质水可传递部份聚合热,但共聚物平均分子量的控制更为困难。
本发明在溶液沉淀聚合体系中应用气相链调节剂CnR2n+2(n=0,1,2;R=H,Cl,F)如H2,CH4,C2H6,CHClF2,CF3Cl,CF2Cl2,CFCl3等,随着四氟乙烯和乙烯混合单体共同扩散至沉淀粒子表面,可达到随意调聚四氟乙烯-乙烯共聚物的平均分子量(以共聚物熔融指数MI值表征),MI值可在0.01-40之间任意调节。
本发明应用二类较为简易第三单体:
(ⅰ)CF2XCOCF2X′(X和X′=Cl或者F)
本发明应用过碳酸酯类
为自由基引发剂(R=t-Bu
,或iso-pr)为叔丁基环己基过碳酸酯(t-Butyl Cyclo haxye penoxicle dicarbonate简写为BCPD),=环己基过碳酸酯(dicyclo haxyl peroxicle dicarbonate简写为DCPD)和异丙基过碳酸酯(isopropyl peroxicle dicarbonate简称IPP),它比U.S.P 3,624,250中采用的(RfCO)2O2具有引发效率高,价格较便宜的特点。
本发明的1,1,2-三氯,1,2,2-三氟乙烷(F113)为介质的溶液沉淀聚合法合成四氟乙烯、乙烯及含有少量第三单体的三元共聚物。按本发明既获得的三元共聚物的克分子百分比组成为乙烯40-60%,四氟乙烯60-40%,第三单体含量为0.1-10%(以乙烯和四氟乙烯总克分子为基准)。聚合温度为20°-90℃,聚合压力为2-20kg/cm2(表压),最佳共聚物克分子百分组成为乙烯45-50%,四氟乙烯55-50%,第三单体为1-5%本发明的方法,较佳聚合温度为40-80℃,聚合压力为5-14g/cm
本发明在溶液沉淀聚合体系中应用气相链调节剂方法、简易第三单体和过碳酸酯引发剂,可合成具有优良性能的四氟乙烯,乙烯和含有少量第三单体的三元共聚物,並可任意调节共聚物的MI值,使共聚物适于各种加工目的。按本发明请合成所得共聚物可用通常热塑性塑料加工技术加工成各种板材,棒材,管材以及适于静电喷除的粉末涂料,亦可作为电线电缆的绝缘层材料。
例一
二立升不锈钢旋转搅拌式高压釜,充氮气抽真空二次,泵入F113溶液1000ml,压入CF3COCF35g,再加入四氟乙烯(TFE)和乙烯混合单体(TFE/E=75/25mol比),直至釜表压为8kg/cm2,然后每30分钟泵入BCPD 100mg(F113溶液),在聚合反应期间补加TFE/E=50/50mole%比混合单体,维持恒压聚合,反应时间为90分钟,真空脱除回收F113,共聚物在120℃真空干燥20小时,得共聚物88g。
例二
实验方法同例一,其聚合温度为70℃,得共聚物95g。
例三-例六
实验方法同例二,加入不同量三氯-氟甲烷(CFCl3)作为链调节剂,CFCl3量以共聚物MI、力学性质关系见表(一)。
表(一)链调节剂量以MI及力学性能的关系
例七
实验方法同例二,以CF3CH=CH220g取代CF3COCF3,得共聚物89g。
例八
实验方法同例二,以(CH3)2C=CH25g取代CF3CH=CH2,得共聚物75g,其共聚物性能有些下降。
例九
实验方法同例二,以CF3CF=CF220g取代CF3CH=CH2,加完初始混合单体后,再压入H24kg/cm2,聚合压力为12kg/cm2,得共聚物85g。
例十
实验方法同例二,用甲烷取代H2,得共聚物92g。
Claims (6)
1、一种含有四氟乙烯、乙烯的共聚物的生产方法,该法包括用1,1,2-三氯,1,2,2-三氟乙烷作介质,加热加压的四氟乙烯、乙烯溶液沉淀聚合体系,本发明的特征是用分子式为CnR2n+2的化合物作气相链调节剂控制共聚物分子量,其中n=0.1或2,R=H、Cl或F,如H2、CH4、C2H6、CHClF2或CF3Cl等。
5、如权利要求1、2或3所述的生产含有四氟乙烯、乙烯的三元共聚物的方法,其特征是聚合温度为20-90℃,压力为2-20公斤/厘米2,但最好是聚合温度为40-80℃,压力为5-15公斤/厘米2。
6、如权利要求4所述的生产含有四氟乙烯、乙烯的三元共聚物的方法,其特征是聚合温度为20-90℃,压力为2-20公斤/厘米2,但最好是聚合温度为40-80℃,压力为5-15公斤/厘米2。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN85100468A CN85100468B (zh) | 1985-04-01 | 1985-04-01 | 四氟乙烯、乙烯三元共聚物的生产方法 |
DE19863610799 DE3610799A1 (de) | 1985-04-01 | 1986-04-01 | Verfahren zur herstellung eines tricopolymers von tetrafluorethylen und ethylen |
US06/846,795 US4678847A (en) | 1985-04-01 | 1986-04-01 | Process for preparing a terpolymer of tetrafluoroethylene, ethylene and a third monomer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN85100468A CN85100468B (zh) | 1985-04-01 | 1985-04-01 | 四氟乙烯、乙烯三元共聚物的生产方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN85100468B CN85100468B (zh) | 1985-09-10 |
CN85100468A true CN85100468A (zh) | 1985-09-10 |
Family
ID=4791182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN85100468A Expired CN85100468B (zh) | 1985-04-01 | 1985-04-01 | 四氟乙烯、乙烯三元共聚物的生产方法 |
Country Status (3)
Country | Link |
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US (1) | US4678847A (zh) |
CN (1) | CN85100468B (zh) |
DE (1) | DE3610799A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109721675A (zh) * | 2018-12-18 | 2019-05-07 | 浙江巨化技术中心有限公司 | 一种乙烯-四氟乙烯共聚物及其制备方法 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5137999A (en) * | 1987-11-20 | 1992-08-11 | Allied-Signal Inc. | Copolymerization of vinyl acetate and a fluoromonomer in an aqueous medium |
US5151477A (en) * | 1987-11-20 | 1992-09-29 | Allied-Signal Inc. | Copolymerization of vinyl acetate and a fluoromonomer in an aqueous medium |
US5077359A (en) * | 1989-10-26 | 1991-12-31 | E. I. Du Pont De Nemours And Company | Peroxide-curable fluoroelastomers and chlorofluoroelastomers having bromine and iodine curesites and the preparation |
EP0702036B1 (en) * | 1993-04-16 | 1999-07-07 | Daikin Industries, Limited | Fluorocopolymer, process for producing the same, and fluoroelastomer |
IT1284112B1 (it) * | 1996-07-05 | 1998-05-08 | Ausimont Spa | Copolimeri fluorurati dell'etilene |
JP3981981B2 (ja) | 1997-06-23 | 2007-09-26 | ダイキン工業株式会社 | テトラフルオロエチレン共重合体を用いた積層体 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2885448A (en) * | 1947-04-23 | 1959-05-05 | William T Miller | Halocarbon polymers |
US3528954A (en) * | 1967-10-30 | 1970-09-15 | Du Pont | Process for homopolymerization of tetrafluoroethylene and copolymerization of same with fluoro co-monomers in the solvent 1,1,2 - trichloro - 1,2,2 - trifluoroethane |
GB1292643A (en) * | 1968-11-19 | 1972-10-11 | Du Pont | Ethylene/tetrafluoroethylene copolymers |
US3624250A (en) * | 1970-01-20 | 1971-11-30 | Du Pont | Copolymers of ethylene/tetrafluoroethylene and of ethylene/chlorotrifluoroethylene |
JPS4929309A (zh) * | 1972-07-19 | 1974-03-15 | ||
US3817951A (en) * | 1972-11-20 | 1974-06-18 | Pennwalt Corp | Low-modulus thermoplastic ethylene-tetrafluoroethylene-hexafluoropropene terpolymers |
JPS5224957B2 (zh) * | 1974-05-10 | 1977-07-05 | ||
US4033939A (en) * | 1975-04-02 | 1977-07-05 | Allied Chemical Corporation | Stress-crack resistant ethylene-perhaloethylene terpolymers |
US4123602A (en) * | 1976-05-24 | 1978-10-31 | Asahi Glass Company, Ltd. | Terpolymers of tetrafluoroethylene, ethylene and perfluoroalkyl vinyl monomer and process for producing the same |
DE3024450A1 (de) * | 1980-06-28 | 1982-01-28 | Hoechst Ag, 6000 Frankfurt | Verfahren zur herstellung von waessrigen, kolloidalen dispersionen von copolymerisaten des typs tetrafluorethylen-ethylen |
JPS58164609A (ja) * | 1982-03-25 | 1983-09-29 | Daikin Ind Ltd | 光学繊維用鞘材 |
US4521575A (en) * | 1983-02-12 | 1985-06-04 | Daikin Kogyo Co., Ltd. | Tetrafluoroethylene-ethylene type copolymer |
JPS59197411A (ja) * | 1983-04-25 | 1984-11-09 | Daikin Ind Ltd | エチレン−テトラフルオロエチレンまたはクロロトリフルオロエチレン系共重合体 |
-
1985
- 1985-04-01 CN CN85100468A patent/CN85100468B/zh not_active Expired
-
1986
- 1986-04-01 US US06/846,795 patent/US4678847A/en not_active Expired - Fee Related
- 1986-04-01 DE DE19863610799 patent/DE3610799A1/de not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109721675A (zh) * | 2018-12-18 | 2019-05-07 | 浙江巨化技术中心有限公司 | 一种乙烯-四氟乙烯共聚物及其制备方法 |
CN109721675B (zh) * | 2018-12-18 | 2021-01-08 | 浙江巨化技术中心有限公司 | 一种乙烯-四氟乙烯共聚物及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
DE3610799A1 (de) | 1986-10-09 |
CN85100468B (zh) | 1985-09-10 |
US4678847A (en) | 1987-07-07 |
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