copolycondensate

In this paper, the block PET-PET(PHB60) copolycondensate was prepared by using melt condensation from PET(PHB60) copolyester and low molecular weight PET.本文采用PET(PEB60)和低分子量的PET熔融共缩聚,制备PET—PET(PHB60)共缩聚物。xA4汉语字典

Synthesis of modified melamine-urea-formaldehyde copolycondensation resin adhesive;改性三聚氰胺-尿素-甲醛共缩聚树脂胶粘剂的合成xA4汉语字典

0%, molar ratio) of copolycondensation, There are a linear relation between t (reaction time of the third monomer)and lnη(η is low shear viscosity of copolymer at 303℃).用硫磺、对二氯苯为原料，在极性有机溶剂中，以１，２，４－三氯苯作共聚反应第三单体，共缩聚制得了微支化型高分子量聚苯硫醚（ＰＰＳ）树脂，在缩聚反应中，第三单体量一定时，一定时间内聚合物对数低切变粘度值与反应时间具有线性关系。xA4汉语字典

A polyamic acid(PAA) was synthesized in N,N′-dimethylformamide(DMF) via microwave-assisted copolycondensation by using 3,3′,4,4′-benzophen-onetetracarboxylic dianhydride(BDTA) and pyromellitic dianhydride(PMDA) as the dianhydride monomers,4,4′-diaminodiphenyl sulfone(DDS) and 4,4′-diaminodiphenyl ether(ODA) as the diamine monomers.以3,3′,4,4′-二苯甲酮二酐(BTDA)、均苯四甲酸二酐(PMDA)、4,4′-二氨基二苯砜(DDS)和4,4′-二氨基二苯醚(ODA)为单体,采用微波辐射溶液缩聚得到一种四元共缩聚聚酰胺酸(PAA),然后经亚胺化得到聚酰亚胺(PI)。xA4汉语字典

The co-polycondensation type polyamic acid (PAA) was synthesized using 4,4′- diaminodiphenylmethane (MDA) as diamine monomer,3,3′,4,4′-benzoph-enonetetracarboxylic dianhydride (BDTA) and pyromellitic acid dianhydride (PMDA) as dianhydride monomers under conventional heating solution polycondensation.以4,4′-二氨基二苯甲烷(MDA)为二胺单体,均苯四甲酸酐(PMDA)和3,3′,4,4′-二苯酮四羧酸二酐(BTDA)为二酐单体,低温溶液聚合生成一种共缩聚聚酰胺酸(PAA)。xA4汉语字典

melamine-urea copolycondensation resin adhesives for wood三聚氰胺-尿素共缩聚树脂木材粘合剂xA4汉语字典

Study on Synthesis and Properties of Co-condensated MPF Resin;MPF共缩聚树脂的合成与性能研究xA4汉语字典

Study on Synthesis and Properties of Co-condensated PUF ResinPUF共缩聚树脂的合成及其性能研究xA4汉语字典

The Modification of Poly (Para-Phenylene Terephthalamide) by Copolycondensation;聚对苯二甲酰对苯二胺三元共缩聚改性研究xA4汉语字典

Synthesis and Characterizaion of Aromic Polyimide via Microwave-Assisted Copolycondensation微波辐射四元共缩聚聚酰亚胺的合成与表征xA4汉语字典

Condensation polymers from cardanol, formaldehyde and amine (PCX) are systhesized by copolycondensation, then are reacted with epoxy resin to form coating films.用共缩聚的方法，由腰果酚、甲醛和多元胺合成腰果酚缩醛胺聚合物。xA4汉语字典

Studies on Urea-Formaldehyde-Modifier Co-condensed Resin Adhesive尿素—甲醛—改性剂共缩聚树脂胶粘剂研究xA4汉语字典

Influence of NaOH/phenol mole ratio on the structure and performance of Phenol-Urea-Formaldehyde resinNaOH用量对PUF共缩聚树脂结构和性能的影响xA4汉语字典

Influence of urea addition on phenol-urea-formaldehyde resin.尿素用量对苯酚-尿素-甲醛共缩聚树脂的影响xA4汉语字典

Comparison of Structure Formation of Phenol-urea-formaldehyde Resin苯酚-尿素-甲醛共缩聚树脂结构形成比较xA4汉语字典

Research Progress on Modification of PPTA by Copolycondensation聚对苯二甲酰对苯二胺树脂共缩聚改性研究进展xA4汉语字典

Structure Formation and Variation of Mass Fractions of MUF and PMUF Co-condensed Resins;MUF和PMUF共缩聚树脂结构形成及分子组分变化的研究xA4汉语字典

Structural Progressing of Phenol-urea-formaldehyde Resin under Alkaline Condition碱性环境下苯酚-尿素-甲醛共缩聚树脂结构形成研究xA4汉语字典

Experiment on Hot Pressing Technology of Plybamboo Form by Phenol-urea-formaldehyde Cocondensed resins苯酚-尿素-甲醛共缩聚树脂制取竹胶板模板热压工艺试验xA4汉语字典

Synthesis and Characterization of Polystyrene-b-Poly(Glycidyl Methacrylate) Copolymer聚苯乙烯-聚甲基丙烯酸缩水甘油酯嵌段共聚物的合成与表征xA4汉语字典

Diagnosis of Atrophy Gastritis and Gastric Intestinal Metaplasia with Confocal Laser Endomicroscopy in Vivo共聚焦激光显微内镜对萎缩性胃炎诊断价值xA4汉语字典

Synthesis of Polystyrene-b-Polycarbonate-b-Polystyrene and Polycarbonate-g-Polystyrene by the Combination of Condensation Polymerization and Atom Transfer Radical Polymerization;原子转移自由基聚合与缩合聚合相结合聚苯乙烯/聚碳酸酯嵌段及接枝共聚物的合成xA4汉语字典

condensed sulfur dyes缩聚染料,硫化缩聚染料xA4汉语字典