氯乙烯-乙烯基异丁基醚树脂在涂料中的应用

阐述氯乙烯-乙烯基异丁基醚树脂的制备方法、树脂表征和性能及其应用范围。     

氯醚树脂生产及应用概述

通过分析国内外同类产品的技术指标，讨论了研制开发氯乙烯-乙烯基异丁基醚共聚树脂的生产工艺．并对其主要应用领域进行了分类阐述。     

PVC企业值得开发的特种树脂

介绍了几种特种PVC树脂的国内外生产情况、应用范围及发展前景,如ACR-g-VC、BOVC、PVDC、氯乙烯-乙烯基异丁基醚和特种PVC糊树脂等。     

水相微悬浮聚合氯醚树脂的合成

介绍了水相微悬浮法氯醚树脂的合成方法,通过聚合物单体(氯乙烯、乙烯基异丁基醚)的摩尔比、分散、乳化体系、温度与催化剂的正交实验,得到合成氯醚树脂的优化工艺条件,并对产品进行了表征。     

氯化聚合物的性质及在涂料中的应用(Ⅱ)

4.5 氯乙烯/乙烯异丁基醚共聚物 氯乙烯/乙烯异丁基醚共聚物是BASF公司近年开发的用以取代氯化橡胶的新树脂,以制造油墨、涂料.此树脂在欧洲已得到广泛应用,在中国主要是应用到油墨行业,而在防腐涂料方面的应用才刚开始[15].     

氯化聚合物的性质及在涂料中的应用（Ⅲ）

４ .５氯乙烯／乙烯异丁基醚共聚物氯乙烯／乙烯异丁基醚共聚物是ＢＡＳＦ公司近年开发的用以取代氯化橡胶的新树脂 ,以制造油墨、涂料。此树脂在欧洲已得到广泛应用 ,在中国主要是应用到油墨行业 ,而在防腐涂料方面的应用才刚开始［１５］。这种共聚物是由７５ %氯乙烯和２５ %乙烯异丁醚共聚而成 ,商品名为ＬａｒｏｆｌｅｘＭｐ系列。其结构为［６］:乙烯异丁醚具有内增塑作用 ,不加外来增塑剂的涂层已有较好柔韧性 ,不存在因增塑剂迁移损失而变脆的现象［１５］。由于在分子结构中引入长脂肪链 ,能溶于芳烃、酯、酮等溶剂。这种树脂不含…     

乳液法合成氯乙烯/乙烯基异丁醚共聚树脂

介绍了10L聚合釜乳液法氯乙烯/乙烯基异丁醚共聚树脂研制开发状况。讨论了pH值缓冲剂、聚合温度、引发体系、乳化剂等对合成氯醚树脂的影响规律。     

氯乙烯—乙烯异丁基醚共聚物树脂涂层的外增塑研究

研究了两种增塑剂对氯乙烯-乙烯异丁基醚共聚物树脂涂层力学性能的影响。讨论了两种增塑剂的增塑效果与增塑剂体积分数、增塑剂种类的关系。     

磷酸钙包膜催化剂合成高纯度乙烯基异丁基醚

研究了用无定形磷酸钙包膜催化剂催化分解乙醛缩二异丁醇合成乙烯基异丁基醚,在280℃进料速度60mL/min的条件下,定向转化率为98.4%,原料转化率为94.3%。催化产物经分馏和萃取蒸馏可得98.6%的乙烯基异丁基醚(IBVE),若100g该产物用质量比4∶1的CaCl2-CaO混合物6g在-18℃处理,则可得到异丁醇质量分数<0.4%,IBVE质量分数为99.3%的产品。     

中国昊华化工(集团)总公司科技成果精选

氯乙烯 -乙烯异丁基醚树脂户外钢铁结构防腐涂料　　一、简介防腐涂料特别是长寿命钢铁防腐涂料在大型工业设施上应用广泛 ,国外优秀品种可提供 1 5年以上保护期 ,在涂料工业中属于高科技、高效能品种。我国在这方面与工业化发达国家有着较大的差距 ,亟待提高。本项目是跟踪国外防腐涂料的最新发展研制开发的新型长效户外钢铁防腐涂料 ,它集合了卤烯烃类防腐涂料的所有优点 ,并在户外高耐侯性及防腐性能上有较大提高 ,是该类产品的最新发展 ,其预期保护寿命在 1 5年以上。该涂料以氯乙烯 -乙烯异丁基醚树脂为基料 ,添加防腐类填料 ,具有突出…     

Synthesis of acrylate modified vinyl chloride and vinyl isobutyl ether copolymers and their properties

With acrylic acid, butyl acrylate and methyl methacrylate as the monomers, acrylate modified vinyl chloride and vinyl isobutyl ether copolymers were prepared by solution polymerization. Firstly, vinyl chloride and vinyl isobutyl ether copolymers were grafted with acrylic monomers to obtain a product containing acrylate grafted vinyl chloride and vinyl isobutyl ether copolymers and polyacrylate, which was then neutralized by triethylamine and dispersed into water to get a self-emulsified emulsion. The acrylate modified vinyl chloride and vinyl isobutyl ether copolymers were characterized by Fourier transform infrared spectroscopy. The mean molecular weight of grafted polymer was determined by gel permeation chromatography, and the particle sizes and their distributions of the dispersions were measured by laser light scattering. The influences of initiator concentration, acrylate content, acrylic acid content and neutralization degree upon the properties of the modified copolymers were discussed. The results show that the emulsion will be with good storage stability, and the modified polymer will be with high water resistance, impact resistance and excellent adhesion when initiator concentration is 1.5%, acrylate content is 50%, acrylic acid content ranges from 9% to 11%, and neutralization degree is between 80% and 100%.     

Living copolymerization of octadecyl vinyl ether with isobutyl vinyl ether: copolymerization parameters and crystallization behaviour of the copolymers

Cationic copolymerization of octadecyl vinyl ether (ODVE) with isobutyl vinyl ether (IBVE) under reaction conditions leading to living vinyl ether polymerization has been studied. The experimental results show that, under such conditions, the living nature of the copolymerization can be retained. The copolymerization parameters were found to be r_IBVE = 2.2 and r_ODVE = 0.30. Incorporation of up to 50% of IBVE units has only a small effect on the crystallinity of ODVE units. This is ascribed to the fact that the crystallinity is due to the octadecyl side‐chains and not to the main chain, and that the copolymers have a gradient‐like (tapered) structure. © 2000 Society of Chemical Industry     

Photochemically initiated free radical promoted living cationic polymerization of isobutyl vinyl ether

A new photoinitiating system for living cationic polymerization of vinyl ethers such as isobutyl vinyl ether (IBVE) has been reported. The photoinitiating system comprises free radical photoinitiators such as 2,2-dimethoxy-2-phenyl acetophenone (DMPA), benzophenone or thioxanthone, together with an onium salt, such as diphenyliodonium chloride and zinc bromide. In the first step, photochemically generated free radicals are oxidized to the corresponding carbocations which subsequently react with vinyl ether monomer to yield an adduct. In the presence of zinc salt, this adduct initiates living cationic polymerization of IBVE.     

氯乙烯/异丁基乙烯基醚乳液共聚物的合成

以(NH4)2S2O8／Na2SO3／CuSO4为氧化-还原引发体系、十二烷基硫酸钠(SDS)为乳化剂，采用间歇乳液聚合合成氯乙烯／异丁基乙烯基醚(VC／IBVE)共聚物。结果表明，当投料单体中IBVE质量分数增加时,相同聚合时间的聚合转化率和共聚物特性粘度明显降低。当转化率小于70％时，共聚物平均组成变化不大；聚合温度增加使聚合速率增加，但共聚物特性粘度减小；SDS浓度对聚合速率和共聚物特性粘度的影响很小；随引发体系浓度增加．聚合速率增加，共聚物特性粘度变化不大。     

乙烯-醋酸乙烯-氯乙烯共聚树脂合成试验研究

介绍了在10L聚合釜中合成乙烯-醋酸乙烯-氯乙烯(EVA-g-VC)共聚树脂的试验情况。分别研究了EVA种类及用量、EVA的溶胀方法、助剂对聚合过程和树脂颗粒性能的影响规律,制得的EVA-g-VC共聚树脂的加工性能基本达到了国外同类产品水平。     

Concerning the miscibility of poly(vinyl phenol) blends — FTi.r. study

The results of a Fourier transform infrared study of poly(vinyl phenol) (PVPh) blends containing a number of chemically and structurally dissimilar polymers are presented. These polymers include the polyesters poly(ε-caprolactone) and poly(?-propiolactone); poly(vinyl alkyl ethers) where the alkyl groups are methyl, ethyl and isobutyl respectively; poly(ethylene oxide) and poly(vinyl pyrrolidone). All of these PVPh blends, with the exception of that containing poly(vinyl isobutyl ether), exhibit infrared spectral features consistent with a significant degree of mixing. Intermolecular hydrogen bonding interactions involving the PVPh hydroxyl group and either the carbonyl or ether oxygen moieties of the other polymers in the blend are identified. The relative strengths of these intermolecular interactions are discussed together with ramifications pertinent to the overall subject of polymer miscibility.     

氯乙烯聚合研究进展

对近期氯乙烯聚合研究进展情况进行了综述,在聚合化学方面的研究包括复合引发剂引发氯乙烯聚合动力学、氯乙烯活性自由基聚合、茂金属催化聚合和阴离子聚合,在成粒机理方面的研究包括氯乙烯悬浮聚合和新型非均相聚合机理。     

Poly(methyl vinyl ether-b-octadecyl vinyl ether): a new non-ionic surfactant

Block copolymers consisting of methyl vinyl ether (MeVE) units and octadecyl vinyl ether (ODVE) units were synthesized using the cationic living polymerization technique. The polymerization of MeVE was initiated with the trimethyl silyl iodide/1,1-diethoxyethane/ZnI₂ system at −40°C in toluene and the living polymer thus obtained was used as initiator for the polymerization of ODVE at 07deg;C. The combination of hydrophilic (PMeVE) and hydrophobic (PODVE) segments provides the block copolymers with non-ionic surfactant properties, which have been evaluated by measurement of the stabilities of water–decane emulsions.     

Comparison of interdiffusion at polystyrene–poly(vinyl methyl ether) and polystyrene–poly(isobutyl vinyl ether) interfaces

The effect of polymer–polymer compatibility on interdiffusion at polymer interfaces with dissimilar mobilities was investigated by attenuated total internal reflectance infrared spectroscopy. The polymer pair consisting of polystyrene and poly(vinyl methyl ether) was used to study interdiffusion at the interface of compatible polymers. The polymer pair consisting of polystyrene and poly(isobutyl vinyl ether) was used to study interdiffusion at the interface of incompatible polymers. Results indicate that the extent of interdiffusion is controlled by the polymer–polymer compatibility parameter, irrespectively of the differences in the mobility of the polymers.