摘要:
Ethylene can be polymerized, and optionally copolymerized with other selected olefins, using a polymerization catalyst system containing nickel and selected t-butyl substituted phosphines. Some of the resulting polymers have novel structures. The polymers are useful for films and molding resins.
摘要:
Ethylene, dienes and optionally α-olefins are copolymerized by selected iron complexes of 2,6-pyridinecarboxaldehydebis(imines) and 2,6-diacylpyridinebis(imines). The resulting copolymers contain residual olefinic unsaturation from the diene monomers, and some of these copolymers contain cyclic units in the main chain.
摘要:
This invention relates to the preparation of polyamide block copolymers by sequential monomer addition. More particularly, it relates to catalysts capable of copolymerizing not only cyclic amides, but other monomers such as cyclic esters and epoxides as well, using sequential addition so as to produce useful and novel block copolymers.
摘要:
Ethylene and allyl- or vinylsilanes are efficiently copolymerized by certain late transition metal complexes containing selected bidentate or tridentate ligands. The resulting novel polymers may be crosslinked by moisture when vinylsilane contains groups bound to silicon which are hydrolyzable. The polymers are useful for wire coating, crosslinked foams, pipes, and other uses.
摘要:
The invention is related to thermal imageable dielectric layers and thermal transfer donors and receivers comprising dielectric layers. The thermal transfer donors are useful in making electronic devices by thermal transfer of dielectric layers having excellent resistivity, good transfer properties and good adhesion to a variety of receivers.
摘要:
Olefins containing selected functional groups such as silyl, ether and alkenyl, and often containing a blocking group, may be copolymerized with unsubstituted olefins such as ethylene and propylene in the presence of certain coordination compounds of nickel or palladium. The resulting polymers are useful as molding resins, elastomers, in adhesives and for films.
摘要:
Olefins containing selected functional groups such as silyl, ether and alkenyl, and often containing a blocking group, may be copolymerized with unsubstituted olefins such as ethylene and propylene in the presence of certain coordination compounds of nickel or palladium. The resulting polymers are useful as molding resins, elastomers, in adhesives and for films.
摘要:
Ethylene and/or propylene, and α-olefins may be copolymerized by contacting them with certain iron or cobalt complexes of selected 2,6-pyridinecarboxaldehydebis(imines) and 2,6-diacylpyridinebis(imines). The polymers produced, some of which are novel, are useful as molding resins.