摘要:
Addition polymerization catalysts comprising a derivative of a titanium or zirconium in the +4 oxidation state prepared by metal center oxidation and cation complex formation of a reduced metal precursor complex via electron transfer in a single step by use of a neutral organic oxidant, optionally in the presence of a Lewis acid mitigator.
摘要:
The present invention pertains to sulfonated substantially random interpolymers made from monomer components comprising from 1 to 65 mole percent of (a) at least one vinyl or vinylidene aromatic monomer, or (b) at least one hindered aliphatic or cycloaliphatic vinylidene monomer, or (c) a combination of at least one vinyl or vinylidene aromatic monomer and at least one hindered aliphatic or cycloaliphatic vinylidene monomer, and from 35 to 99 mole percent of at least one aliphatic α-olefin having from 2 to 20 carbon atoms; and optionally, from 0 to 20 mole percent of a diene containing from 4 to 20 carbon atoms; wherein the sufonated interpolymer contains at least one mer (or moiety) of a group represented by the formula -SO3-M where M is hydrogen or a group 1, 7 or 12 metal in ionic form or combination thereof. The present invention also pertains to blends of these polymers with polyamides and polyolefins. These blends are useful as materials which can be formed into a wide variety of plastic articles which take advantage of the combination of toughness, heat resistance, and solvent resistance. The present invention also pertains to articles prepared from substantially random interpolymers which are surface sulfonated.
摘要:
The present invention pertains to an interpolymer comprising; (1) from 5 to 85 mol percent of polymer units derived from one or more vinyl or vinylidene aromatic monomers, (2) from 15 to 95 mol percent of polymer units derived from at least one of ethylene and/or a C3-20 alpha-olefin; and (3) from 0 to 20 mol percent of polymer units derived from one or more of ethylenically unsaturated polymerizable monomers other than those derived from (1) and (2); and wherein said interpolymer contains detectable vinyl or vinylidene aromatic monomer triads.
摘要:
The subject invention provides a thermoset elastomer comprising a crosslinked pseudo-random or substantially random interpolymer of: (a) from 15 to 70 weight percent of at least one α-olefin, (b) from 30 to 70 weight percent of at least one vinylidene aromatic compound, and (c) from 0 to 15 weight percent of at least one diene. The subject invention further provides a thermoplastic vulcanizate comprising the thermoset elastomers of the invention as provided in a thermoplastic polyolefin matrix. The subject invention further provides processes for preparing the inventive thermoset elastomers and thermoplastic vulcanizates, as well as parts fabricated therefrom. The inventive materials have a superior balance of properties, as compared to EPM and EPDM based materials. The subject invention also pertains to foams and methods for their preparation.
摘要:
The subject invention provides a thermoset elastomer comprising a crosslinked pseudorandom or substantially random interpolymer of: (a) from 15 to 70 weight percent of at least one α-olefin, (b) from 30 to 70 weight percent of at least one vinylidene aromatic compound, and (c) from 0 to 15 weight percent of at least one diene. The subject invention further provides provides a thermoplastic vulcanizate comprising the thermoset elastomers of the invention as provided in a thermoplastic polyolefin matrix. The subject invention further provides processes for preparing the inventive thermoset elastomers and thermoplastic vulcanizates, as well as parts fabricated therefrom. The inventive materials have a superior balance of properties, as compared to EPM and EPDM based materials.