Our company has strong new product development ability and fast response ability and advanced international design concept, we closely follow the development of new technology in the world, and launch all kinds of high performance and high reliability Pyromellitic Dianhydride 89 32 7, Pyromellitic Dianhydride 99 8 , pyromellitic dianhydride acid or base .We will uphold our corporate mission and vision, guide social values, and strive to benefit mankind and provide quality polyamic acid of pyromellitic dianhydride. Our corporate image is strength, stability, success and harmony. The tireless pursuit of high-quality products is our consistent survival rule. We always adhere to customer-centricity and regard good products as our foundation. Please feel free to contact us. Meanwhile, it is convenient to visit our website. We believe in fostering long-term relationships with our clients that are based on mutual respect and trust. Since its establishment, our sales growth rate has far exceeded the average level of the industry.
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![99.5% Recrystallization PMDA]()
99.5% Recrystallization PMDAPyromellitic Dianhydride (PMDA), due to its rigid benzene ring structure and the highly reactive anhydride groups, can effectively participate in polymerization reactions to form stable imide bonds.read more -
![Acrylamide Crystal 98%]()
Acrylamide Crystal 98%Acrylamide Crystal 98% (CAS 79-06-1 ), also known as AM, the molecule of it has two active centers,both weak acidic and weak alkaline, so it is easy to self-polymerize.It is soluble inread more -
![99.8% Recrystallization 4,4’-OXYDIANILINE]()
99.8% Recrystallization 4,4’-OXYDIANILINE4,4'-Oxydianiline, is also known as 4,4'-ODA and 4,4'-Diaminodiphenylether, due to its structure containing two active amine groups, it can efficiently react with acid anhydrides to form stable imideread more -
![Polyether Polyols For Polyurethanes]()
Polyether Polyols For PolyurethanesPolyether polyols (PPG)are a class of macromolecular compounds formed by alkali-catalyzed polymerization of ethylene oxide, propylene oxide, or other epoxides.read more -
![Polymeric MDI]()
Polymeric MDIPoly[methylene(polyphenyl) isocyanate] is a diisocyanate-diphenylmethane(MDI)-based composition containing some higher functionality isocyanates. The functionality is about 2.6-2.7. It is a brownread more -
![1,3-Bis(4-aMinophenoxy)benzene]()
1,3-Bis(4-aMinophenoxy)benzene1, 3-bis (4-aMinophenoxy)benzene, TPE-R, CAS 2479-46-1, molecular formula C18H16N2O2, molecular weight 292.3318. It is a kind of chemical intermediate, containing two ether bonds and three benzeneread more -
![3,3’,4,4’-Biphenyl Tetracarboxylic Diandhydride]()
3,3’,4,4’-Biphenyl Tetracarboxylic Diandhydride3,3 ',4,4 '-Biphenyl tetracarboxylic diandhydride, also known as BPDA, CAS 2420-87-3, molecular formula C16H6O6, used in the production of polyimide products and composites, pharmaceuticalread more -
![Diphenylmethane]()
DiphenylmethaneDiphenylmethane (CAS 101-81-5), with a purity of 99.0% minimum, has aromatic properties and serves as an important intermediate in organic synthesis. It and its derivatives are widely used in variousread more -
![2-Nitropropane]()
2-Nitropropane2-Nitropropane also known as dimethylnitromethane or isonitropropane is a colourless, oily liquid with a mild and sweet odour. It is flammable and soluble in water. It is also soluble in many organicread more -
![2-amino-2-methyl-1-propanol]()
2-amino-2-methyl-1-propanol2-amino-2-methyl-1-propanol (AMP)：is a high-performance additive and organic synthetic raw material that can be applied in electronics, new energy, cos-metics, coatings and inks, metal cutting,read more -
![Phthalic Anhydride]()
Phthalic AnhydridePhthalic anhydride (CAS 85-44-9), purity 99.5%. We can provide both OX-BASE PA and NP-BASE PA. Our OX-BASE PA exceeds the national standard for superior grade.read more -
![4,4 Diaminodiphenyl Ether]()
4,4 Diaminodiphenyl Ether4,4'-Diaminodiphenyl Ether, also known as ODA (4,4'-Diaminodiphenyl Ether), is an important organic compound with the formula C12H12N2O and a molecular weight of 200.24.read more
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Poly (pyromellitic dianhydride-co-4,4 -oxydianiline), amic acid ......
Poly(pyromellitic dianhydride-co-4,4′-oxydianiline), amic acid solution (PAA) converts to polyimide at 300 o C. The FTIR spectra indicates a carbonyl stretch of carboxylic acids in PAA at 1650...
Synthesis and characterization of pyromellitic dianhydride based ......
Dec 22, 2021 · Pyromellitic dianhydride (PMDA) and 4,4′-diamino-2,2′-stilbenedisulfonic acid (DSD) were polymerized by polycondensation in 1:1 Sulfonated Polyimide (SPI) m-Cresol. ... The mixture was...
NMR-based structural characterization of common …...
Mar 1, 2020 · This study reports for the first time the use of poly (pyromellitic dianhydride-p-phenylene diamine) (PPDD) as a reducing & stabilizing agent, immobilization matrix, and directional......
Synthesis and characterization of the tert-butyl ester of the ......
Synthesis of poly[(amic acid)-co-(amic ester)] precursors and studies of their imidization using FT-IR and FT-Raman spectroscopy. Materials Research Innovations 2003 , 7 (1) , 51-56....
Synthesis, characterization and hydrolytic stability of poly (amic …...
Dec 1, 2011 · A series of new poly (amic acid) ammonium salt (PAAS) precursors were prepared by incorporating different amounts of triethylamine (TEA) into terpolymer polyamic acid (PAA),...
Reaction modeling of the multistep synthesis of polyamic acid …...
Dec 1, 1995 · A mathematical model has been developed for studying the multistep synthesis of polyamic acid from pyromellitic dianhydride and oxydianiline. This synthesis process consists of two...
Our company is determined to expand and strengthen the whole series of durable quaternary phosphonium salt, research quaternary ammonium enter the pop 2045 polyol 45 , TBPD for pur, industrial DPG, POLYESTER POLYOL FR 2012 industry and field, and improve the industrial layout. As one of the leading polyamic acid of pyromellitic dianhydride manufacturers and suppliers in China, we warmly welcome you to buy high purity polyamic acid of pyromellitic dianhydride made in China here from our factory. All chemical products are with high quality and competitive price.
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