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1.
市场趋向     
正异丁烯在精细化学品市场潜力大我国异丁烯主要用于生产甲基叔丁基醚(MTBE,主要用作汽油调油剂),此外还可用于生产甲基丙烯酸甲酯(MMA)、丁基橡胶、聚异丁烯、抗氧剂、叔丁酚、叔丁胺、叔丁基硫醇等许多精细有机化学品。异丁烯的发展方向,除了用于生产MTBE外,必须大力拓展MMA、丁基橡胶、聚异丁烯等精细有机化工产品应用领域,其市场潜力巨大。  相似文献   

2.
异丁烯是重要的精细化工产品,以其为原料可以合成许多高附加值的化工产品。异丁烯及其下游产品甲基叔丁基醚、丁基橡胶、聚异丁烯和甲基丙烯酸甲酯的开发和应用日益受到重视,因而研究下游产品的开发和应用具有重大意义。介绍了异丁烯下游产品的生产方法、应用情况以及催化剂类型对异丁烯后续产品技术创新力度和国产化研究还有待加深。  相似文献   

3.
异丁烯用作生产丁基橡胶、塑料、抗氧剂和精细化学品的原料,也用于生产聚异丁烯,聚异丁烯是生产润滑油、燃料添加剂、胶黏剂和密封剂的起始原料。异丁烯还可用于生产二异丁烯、三异丁烯、甲基叔丁基醚(MTBE)、乙基叔丁基醚(ETBE)、甲基丙烯酸甲酯、2,4-叔丁基甲酚、叔丁基硫醇、叔丁醇、叔  相似文献   

4.
本文介绍了异丁烯的下游产品,如丁基橡胶,聚异丁烯,甲基叔丁基醚等的开发及应用情况。  相似文献   

5.
异丁烯是一种不饱和烯烃,是炼油厂及石油化工厂碳四馏份中的一个组成部份,它是制造丁基橡胶的主要单体,还可以生产异戊二烯、甲基丙烯酸甲酯、醇类、聚异丁烯油、用作烷基化原料以及多种性能优良的抗氧剂、催化剂、橡胶防老剂等,不同分子量的聚异丁烯是优良的汽油和润滑油添加剂。由此看来,异丁烯是一种具有广泛用途的宝贵的化工原料。随着石油化工的迅速发展,为碳四馏份的综合利用开辟了广阔的前景。  相似文献   

6.
着重介绍几种大宗异丁烯产品(MTBE、MMA、聚丁烯、对叔辛基酚、丁基橡胶、聚异丁烯、抗氧剂类)的国内外生产情况,结合国外异丁烯工业的发展,提出国内异丁烯产业发展的思路。  相似文献   

7.
吉林石化公司精细化学品厂采用自主知识产权技术生产的高活性聚异丁烯产品,不仅在国内市场受宠,而且打入了国际市场。据该厂商务处负责人介绍,今年,下半年又有5000吨高活性聚异丁烯产品被国外客户订购。[第一段]  相似文献   

8.
韩秀山 《上海化工》2009,34(11):32-35
聚异丁烯是异丁烯(2-甲基丙烯)的均聚物和共聚物产品的总称。但有两种聚合物不是聚异丁烯,一种是丁基橡胶(异丁烯和1%~3%的异戊二烯的共聚物),一种是聚丁烯-1。  相似文献   

9.
对异丁烯活性正离子聚合的机理和在大分子工程中的应用(如合成遥爪聚异丁烯、星形聚异丁烯、异丁烯嵌段共聚物等),超支化异丁烯共聚物,异丁烯正离子聚合的新引发/催化体系,以及丁基橡胶和聚异丁烯的工业生产技术进步作了较为详细的评述。  相似文献   

10.
分析了我国丁基橡胶(IIR)的生产消费现状及发展前景。针对我国目前丁基橡胶的生产状况,提出了加大研发力度、开发高端产品、积极扩大向印度等新兴市场出口等发展建议。  相似文献   

11.
Interpenetrating polymer networks (IPNs) combining polyisobutene (PIB) and poly(methyl methacrylate) (PMMA) networks were prepared using a in situ strategy. PIB networks were formed by isocyanate—alcohol addition between the hydroxyl end groups of telechelic dihydroxy-polyisobutene and an isocyanate cross-linker, catalyzed by dibutyltindilaurate (DBTDL). PMMA networks were obtained from free-radical co-polymerization of methyl methacrylate (MMA) with ethylene glycol bismethacrylate (EGDM) in the presence of dicyclohexyl peroxydicarbonate (DCPD) as the initiator. The synthesis of each network during the IPN formation was followed by FTIR spectroscopy. The highest degree of interpenetration is obtained by forming the PIB network first. The corresponding transparent IPNs exhibit two mechanical relaxation temperatures as determined by Dynamic mechanical thermal analysis (DMTA), corresponding to those of PMMA and PIB enriched phases. Mechanical properties of PIB networks are tremendously improved by the presence of PMMA network in such IPN architecture.  相似文献   

12.
Being nonpolar in nature, butyl rubber (IIR) has poor compatibility toward polar polymers and fillers. It can be improved by grafting polar substrates on the butyl elastomer. Radiation‐induced polymer processing is getting increasing interest, as it leads to new and improved polymers with desirable and interesting properties. In this investigation, electron beam radiation has been used to graft methyl methacrylate (MMA) and butyl acrylate (BA) on IIR. This process has several advantages over conventional grafting processes such as cationic polymerization (which needs very low temperature and stringent reaction conditions) and solution radical polymerization (which often needs solvent removal and recycling). The grafted polymers were characterized by using 1H NMR, IR, TGA, and SEM analysis. The degree of grafting increases with a decrease in irradiation dose as well as with an increase in monomer concentration. It was observed that there was a decrease in intrinsic viscosity in irradiated IIR samples, indicating the chain scission. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 1340–1346, 2006  相似文献   

13.
The influence of the surface modification of pressure-sensitive adhesive tapes on their adhesion behavior has been investigated. PBA [poly(butyl acrylate)] and PIB [poly(isobutylene)] adhesives were chosen as pressure-sensitive adhesives and nitrogen plasma was used for the surface modification of the adhesives. The peel force of PBA or PIB adhesive/stainless steel joints was evaluated. The nitrogen plasma treatment showed large effects on the adhesion behavior of both the PBA and the PIB adhesives. The peel force for the PBA adhesive/stainless steel joint decreased by 57 times as a result of the nitrogen plasma treatment and that for the PIB adhesive/stainless steel joint increased by 2.2 times. There are essential differences in the modification reactions caused by the nitrogen plasma between the PBA and PIB adhesives. For the PBA adhesive, cross-linking reactions occurred among the PBA polymer chains and the surface was hardened. For the PIB adhesive, degradation reactions occurred and products with a low molecular weight were formed on the surface. These differences are due to the different responses of the PBA and PIB adhesives towards the nitrogen plasma. The mechanism of the changes in adhesion behavior caused by the nitrogen plasma is discussed.  相似文献   

14.
In this study stable latexes of butyl acrylate (BA)/methyl methacrylate (MMA)/diacetone acrylamide (DAAM) copolymers and BA/MMA/vinyl neo-decanoate (VeoVa-10)/DAAM copolymers were synthesized by a modified semi-continuous microemulsion copolymerization. Ammonium persulfate was used as initiator and a redox system for post-polymerization to reduce the free monomers content. Methacrylic acid (MMA), 2-acrylamido-2-methylpropane sulfonic acid (AMPS), acrylic acid (AA) and various “green” industrial anionic, non-ionic and anionic polymerizable surfactants free of alkylphenol ethoxylates (APEO free) were tested as a stabilizing system. The resulting latexes, their corresponding self-1K crosslinkable binder using the adipic acid (ADH) dihydrazide as crosslinking agent and their films were characterized with rotational viscometer, dynamic light scattering, gloss, dynamic mechanical analysis, minimum film forming temperature (MFFT), water resistance and swelling in methyl ethyl ketone measurements. The experiments showed that BA\MMA\VEOVA-10\DAAM latexes prepared with methacrylic acid and a polymerizable surfactant showed zero coagulation during polymerization. Their corresponding 1K crosslinkable binder with ADH were stable over 6 months storage time and showed good all around properties that makes them suitable for use in friendly to the environment coatings.  相似文献   

15.
The development of copolymers is a promising approach for combining the favorable properties of two polymers and obtaining new properties of the combination. In this work, graft copolymers of polyisobutylene (PIB ) and polycaprolactone or poly(d ,l ‐lactide) were synthesized and studied. Amine‐terminated polyesters were synthesized and were grafted onto an activated PIB backbone synthesized from butyl rubber, a copolymer of isobutylene and 2 mol% isoprene. The polyester content was tuned from 15 to 44 wt% by varying the molar mass of the polyester blocks and the number of molar equivalents used in the grafting reaction. The graft copolymers with higher polyester content underwent nanoscale phase separation, as demonstrated by differential scanning calorimetry and atomic force microscopy imaging. This was found to provide enhanced mechanical properties such as increased tensile strength and Young's modulus relative to the starting rubber or physical blends. Despite the significant polyester content of the graft copolymers and the susceptibility of the polyesters to degradation, the graft copolymers underwent negligible mass loss in 5 mol L?1 NaOH over a period of eight weeks. These results suggest that polyesters can be incorporated into PIB to tune and enhance its properties, while maintaining high chemical stability. © 2016 Society of Chemical Industry  相似文献   

16.
张震乾  包永忠  黄志明  翁志学 《化工学报》2005,56(11):2207-2211
采用苯乙烯(St)悬浮聚合过程滴加甲基丙烯酸甲酯(MMA)乳液聚合组分,进行悬浮-乳液耦合聚合(SECP), 制备大粒径聚苯乙烯-聚甲基丙烯酸甲酯(PS-PMMA)复合粒子.采用1H NMR分析方法,讨论了SECP动力学特征.St的SECP聚合速率和转化率与悬浮聚合一致;MMA聚合速率决定于乳胶粒子聚合速度和凝并在悬浮粒子表面的速度,聚合速率比常规乳液聚合速率低.由于凝并在悬浮粒子表面的PMMA乳胶粒子不再有乳液聚合特征,MMA在SECP中转化率低于同条件常规乳液聚合.分别得到乳化剂和引发剂浓度与SECP和普通乳液聚合恒速段聚合速率的关系.  相似文献   

17.
徐平  高健 《当代石油石化》2011,19(8):40-44,50
分析了尼日利亚新旧石油工业法案的差异及其对在尼外国石油公司的经济影响,介绍了外国石油公司在尼Et利亚的油气开发情况。经济评价结果显示,新石油工业法案对在尼石油公司经济利益影响巨大。  相似文献   

18.
Hazel V. Harris 《Polymer》2006,47(16):5701-5706
Three random and three block copolymers of methyl methacrylate (MMA) and octadecyl acrylate (ODA) were synthesised by atom transfer radical polymerisation. These copolymers were assessed for their application as stabilizers in the one-step non-aqueous dispersion polymerisation of MMA in a non-polar solvent mixture of hexane and dodecane. In all cases stable spherical micro-particle colloidal dispersions were formed with particle diameters in the range of 400-2730 nm. Uniform monodisperse particles with standard deviations in size distributions of less than 5% were obtained in two cases demonstrating the utility of ODA:MMA copolymers as replacement preformed stabilizers in the one-step synthesis of MMA micro-spheres.  相似文献   

19.
Wan-Jung Chou  Jen-Lien Lin 《Polymer》2009,50(21):5094-5493
In this study, 2-methacryloxyethyl phenyl phosphate (MEPP), a phosphorus-containing flame retardant, was synthesised via the esterification of phenyl dichlorophosphate (PDCP) with 2-hydroxyethyl ethylene methacrylate (HEMA), followed by hydrolysis. A two-stage bulk polymerisation process prepared MEPP/methyl methacrylate (MEPP/MMA) copolymers containing various amounts of MEPP. The condensed-phase and volatized products produced at various temperatures during the thermal degradation of MEPP/MMA copolymer were monitored by Fourier transform infrared (FT-IR) spectroscopy and thermogravimetric analysis with Fourier transform infrared spectroscopy (TGA/FT-IR). Finally, we propose the possible mechanisms for the thermal degradation of MEPP/MMA copolymer according to the analytical results of the condensed-phase and volatilized products.  相似文献   

20.
以甲苯二异氰酸酯(TDI-80)、聚醚二元醇(N220)、1,4-丁二醇(BDO)、二羟甲基丙酸(DMPA)、环氧树脂(E-20)和甲基丙烯酸甲酯(MMA)等用原位合成技术制备具有核壳结构的水性聚氨酯-丙烯酸酯(WPUA)复合分散体。研究了环氧树脂(E-20)、MMA加入量等对分散体及涂膜性能的影响,从而确定了最佳合成配方,获得了具有优良的低温成膜性好、贮存稳定性好、高硬度、耐有机溶剂性佳和附着力强的水性聚氨酯涂料。  相似文献   

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