Összes fotó(3)
Fontos dokumentumok
412287
Pyromellitic dianhydride
97%
Szinonimák:
Benzene-1,2,4,5-tetracarboxylic dianhydride, PMDA
Bejelentkezésa Szervezeti és Szerződéses árazás megtekintéséhez
Összes fotó(3)
About This Item
Tapasztalati képlet (Hill-képlet):
C10H2O6
CAS-szám:
Molekulatömeg:
218.12
Beilstein:
213583
EC-szám:
MDL-szám:
UNSPSC kód:
12162002
PubChem Substance ID:
NACRES:
NA.23
Javasolt termékek
Minőségi szint
Teszt
97%
form
powder
bp
397-400 °C (lit.)
mp
283-286 °C (lit.)
SMILES string
O=C1OC(=O)c2cc3C(=O)OC(=O)c3cc12
InChI
1S/C10H2O6/c11-7-3-1-4-6(10(14)16-8(4)12)2-5(3)9(13)15-7/h1-2H
Nemzetközi kémiai azonosító kulcs
ANSXAPJVJOKRDJ-UHFFFAOYSA-N
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Általános leírás
Pyromellitic dianhydride is a dianhydride class of monomers commonly used in the preparation of polyimides polymers which are used in aerospace, electronics, and automotive industries because of their excellent thermal stability, high mechanical strength, and inherent flame resistance. It is also used in the synthesis of thermoplastic polymers such as polyesters and polyethers, as well as plasticizers and epoxy resins. Additionally, PMDA serves as a curing agent for epoxy resins. Epoxy resins are widely used in adhesives, coatings, composites, and electrical insulation materials.
Pyromellitic dianhydride (PMDA) is an acidic anhydride that can be used as a repair agent and as a chain extender in the formation of polyethylene terephthalate (PET) based chain extensions. It is mainly used in the production of thermoplastics and other coating applications.
Pyromellitic dianhydride (PMDA) is an acidic anhydride that can be used as a repair agent and as a chain extender in the formation of polyethylene terephthalate (PET) based chain extensions. It is mainly used in the production of thermoplastics and other coating applications.
Alkalmazás
PMDA can be used as:
- A monomer to synthesize aromatic polyimides with excellent thermo-mechanical and chemical properties. These polymers find the applications in automotive and electronic industries.
- A capping agent in the development of siloxane-based hybrid materials for potential usage in organic electronics.
- A monomer in the preparation and modification of thin film composite membranes, which are used in water purification, gas separation, and biomedical devices.
- A monomer in the synthesis of pyromellitic diimide-based copolymers as stable cathode active materials for lithium and sodium-ion batteries.
Figyelmeztetés
Danger
Figyelmeztető mondatok
Óvintézkedésre vonatkozó mondatok
Veszélyességi osztályok
Eye Dam. 1 - Resp. Sens. 1 - Skin Sens. 1
Tárolási osztály kódja
11 - Combustible Solids
WGK
WGK 1
Lobbanási pont (F)
716.0 °F - closed cup
Lobbanási pont (C)
380 °C - closed cup
Egyéni védőeszköz
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
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Cyclodextrin (CD)-based polymers are known to efficiently form molecular inclusion complexes with various organic and inorganic guest compounds. In addition, they also have a great potential as metal complexes because deprotonated hydroxyls can strongly bind metal ions under alkaline conditions.
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In the present work, several novel optically active nanostructure poly(amide-imide)s (PAI)s were synthesized via step-growth polymerization reaction of chiral diacids based on pyromellitic dianhydride-derived dicarboxylic acids containing different natural amino acids such as L-alanine, S-valine, L-leucine, L-isoleucine, L-methionine, and L-phenylalanine
Ju-Young Choi et al.
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Polyimide films have conventionally been prepared by thermal imidization of poly(amic acid)s (PAAs). Here we report that the improvement of tensile strength while increasing (or maintaining) film flexibility of polyimide films was accomplished by simple microwave (MW) irradiation of the
Jun-Xia Yu et al.
Bioresource technology, 110, 160-166 (2012-02-22)
Magnetic pyromellitic dianhydride (PMDA) modified sugarcane bagasse (SCB) was prepared by a situ co-precipitation method. Results showed that the magnetic modified SCB could be recycled easily by an applied magnetic field. Adsorption capacities of the magnetic sorbent for cationic dyes:
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