摘要:
Sulfonated polyphenylene solid polymer electrolytes having high proton conductivity are provided, which are stable and which maintain high conductivity at temperatures of 100.degree. C. and above. These membranes are useful as solid polymer electrolytes for fuel cells and can be operated above the boiling point of water.
摘要:
According to this invention, a process for producing fluorine containing polymer to obtain composite polymer electrolyte composition having excellent ion transport number, that is, ion transfer coefficient, for example, excellent transport number of lithium ion, is provided.A process for producing fluorine containing polymer comprising graft-polymerizing a molten salt monomer having a polymerizable functional group and a quaternary ammonium salt structure having a quaternary ammonium cation and anion, with a polymer having the following unit; —(CR1R2—CFX)— X means halogen atom except fluorine atom, R1 and R2 mean hydrogen or fluorine atom, each is same or different atom.
摘要:
According to this invention, a process for producing fluorine containing polymer to obtain composite polymer electrolyte composition having excellent ion transport number, that is, ion transfer coefficient, for example, excellent transport number of lithium ion, is provided.A process for producing fluorine containing polymer comprising graft-polymerizing a molten salt monomer having a polymerizable functional group and a quaternary ammonium salt structure having a quaternary ammonium cation and anion, with a polymer having the following unit; —(CR1R2—CFX)— X means halogen atom except fluorine atom, R1 and R2 mean hydrogen or fluorine atom, each is same or different atom.
摘要:
The present invention relates to a process for the preparation of a thermoplastic resin composite comprising conducting polycondensation of a monomer material in a solution of an organic solvent containing an organic solvent soluble polymer to form an aromatic condensation polymer which is insoluble in said organic solvent and a thermoplastic resin composite prepared by the process.
摘要:
Condensation polymers of high molecular weight, such as polyesters, polyureas, and polyamides, are usually prepared at temperatures of 200.degree. C. or greater. However, by utilizing the catalyst systems of the present invention, condensation polymers can be synthesized at much lower temperatures. The polycondensation catalyst systems of the present invention are particularly useful for synthesizing aliphatic polyesters, such as polyethylene terephthalate, from dicarboxylic acids and aliphatic glycols. The present invention more specifically discloses a process for the synthesis of an aliphatic polyester comprising polymerizing at least one dicarboxylic acid with at least one aliphatic glycol in the presence of (1) at least one phosphorus containing compound which contains at least one trivalent or pentavalent phosphorus atom which is bonded directly to at least one phenyl group, (2) an acid acceptor, and (3) at least one halogenated organic compound. It is preferred to utilize a polymeric agent having bound acid acceptor groups as the acid acceptor in the process of the present invention.
摘要:
Condensation polymers of high molecular weight, such as polyesters, polyureas, and polyamides, are usually prepared at temperatures of 200.degree. C. or greater. However, by utilizing the catalyst systems of the present invention, condensation polymers can be synthesized at much lower temperatures. The polycondensation catalyst systems of the present invention are particularly useful for synthesizing aliphatic polyesters, such as polyethylene terephthalate, from dicarboxylic acids and aliphatic glycols. The present invention more specifically discloses a process for the synthesis of an aliphatic polyester comprising polymerizing at least one dicarboxylic acid with at least one aliphatic glycol in the presence of (1) at least one phosphorus containing compound which contains at least one trivalent or pentavalent phosphorus atom which is bonded directly to at least one phenyl group, (2) an acid acceptor, and (3) at least one halogenated organic compound. It is preferred to utilize a polymeric agent having bound acid acceptor groups as the acid acceptor in the process of the present invention.
摘要:
Antithrombogenic synthetic elastomer having repeat units comprising portion I which is a soft segment unit containing a polyether and portion II which is a hard segment unit: ##STR1## R is a straight-chain or branched-chain alkylene group containing 2 to 4 carbon atoms, R' is amide a urethane, an urea, n ranges up to 180, m is an integer of 1 to 20, l is an integer of 1 to 10, said polymer having a microdomain structure composed of soft and hard segments, the domains of which have an average size of 10 to 20 nm, and a molecular weight of about 80,000 to about 500,000.The polymer shows little adhesion of blood platelets thereto, little deformation of adhering blood platelets and an excellent antithrombogenic property. This polymer has excellent mechanical properties as an elastomer. This polymer is useful for artificial organs such as blood vessels, kidneys, hearts, and for functional biomaterials and devices such as absorbents for biological components, carriers for sustained release preparations, adhesive materials for living tissue, injectors, blood bags and catheters.
摘要:
A batch processing support apparatus for supporting batch processing in which a batch of individual processing tasks are sequentially executed, comprises a list display that displays a list of a plurality of individual processing tasks and batch processing tasks in which the plurality individual processing tasks are sequentially combined; a selection unit that selects and displays a plurality of desired processing tasks from the individual processing tasks and batch processing tasks displayed by the list display; a rearrangement unit that rearranges the plurality of processing tasks selected by the selection unit; a registering unit that registers a new batch processing task which sequentially executes the processing tasks in an order rearranged by the rearrangement unit; and a batch processing executing unit that executes the batch processing task registered by the registering unit.
摘要:
Described herein is a novel process to resolve a racemic compound into its optically active isomers without need for chemical transformation such as salt formation. The process advantageously utilizes polymers containing chiral moieties in their repeat units as well as exhibiting critical solution temperature behavior in a suitable solvent. An embodiment describes the resolution of tryptophan.
摘要:
An electrolytic membrane for use in fuel cell includes a fluid-imbibed acidified polybenzimidazole resin. The resin is alkyl or aryl sulfonated or alkyl or aryl phosphonated, preferably with a degree of substitution of from 15 to about 60 per cent.