摘要:
Described herein are crystalline block polymers and chain extended polymers containing blocks of crystalline poly(aryl ether ketones). Also, described herein are monomers and oligomers suitable for preparing the crystalline block polymers and chain-extended polymers. Further, described herein are methods for producing the crystalline block and chain-extended polymers, as well as the monomers and oligomers.
摘要:
Described herein is an improved process for preparing poly(aryl ethers) and poly(aryl ether ketones) by the reaction of a mixture of at least one bisphenol and at least one dihalobenzenoid compound, and/or a halophenol, in which the improvement comprises providing to the reaction medium, a combination of sodium or an alkaline earth metal carbonate and/or bicarbonate and a potassium, rubidium, or cesium salt of an organic acid or combinations of various organic salts thereof. The process yields high molecular weight, linear, poly(aryl ethers) and poly(aryl ether ketones) possessing excellent thermal stability and physical properties.
摘要:
Described herein are crystalline block polymers and chain extended polymers containing blocks of crystalline poly(aryl ether ketones). Also, described herein are monomers and oligomers suitable for preparing the crystalline block polymers and chain-extended polymers. Further, described herein are methods for producing the crystalline block and chain-extended polymers, as well as the monomers and oligomers.
摘要:
Novel poly(aryl ether sulfone)-poly(aryl ether ketone) block copolymers are described. They are prepared by the nucleophilic polycondensation of a hydroxy- or halo-terminated poly(aryl ether ketone) oligomer with the poly(aryl ether sulfone) forming reagents; alternatively, a preformed poly(aryl ether sulfone) block may be used.The novel copolymers are tough materials with excellent heat, solvent, and stress-crack resistance. They display high HDT's (heat distortion temperatures) and are useful in molding, extrusion and composites applications.
摘要:
Novel poly(aryl ether sulfone)-poly(aryl ether ketone) block copolymers are described. They are prepared by the nucleophilic polycondensation of a hydroxy- or halo-terminated poly(aryl ether ketone) oligomer with the poly(aryl ether sulfone) forming reagents; alternatively, a preformed poly(aryl ether sulfone) block may be used.The novel copolymers are tough materials with excellent heat, solvent, and stress-crack resistanced. They display high HDT's (heat distortion temperatures) and are useful in molding, extrusion and composites applications.
摘要:
This invention is directed to novel crystalline chain extended polymers containing segments of crystalline poly(aryl ether ketones). The novel materials are easy to prepare and display excellent toughness, fabricability and very good high temperature and solvent resistance.
摘要:
Described are crystalline block copolymers displaying high glass transition temperatures, excellent mechanical properties, excellent chemical and thermal stability, and good melt processability. These block polymers contain segments of crystalline poly(aryl ether ketones).
摘要:
This invention is directed to novel crystalline chain extended polymers containing segments of crystalline poly(aryl ether ketones). The novel materials are easy to prepare and display excellent toughness, fabricability and very good high temperature and solvent resistance.
摘要:
Described herein are novel crystalline chain-extended polymers containing segments of crystalline poly(aryl ether ketones). These poly(aryl ether ketones) are easy to prepare and display excellent toughness, fabricability, and very good high temperature and solvent resistance.
摘要:
Described are crystalline block copolymers displaying high glass transition temperatures, excellent mechanical properties, excellent chemical and thermal stability, and good melt processability. These block polymers contain segments of crystalline poly(aryl ether ketones).