초록 ▼

Compact polymer/metal composite particles, sized or unsized, in which the metal is in the form of crystallites encapsulated in a polymer matrix. The composite particles may be prepared by introducing a metal complex into a swollen polymer in an organic liquid which is a solvent for the metal complex

Compact polymer/metal composite particles, sized or unsized, in which the metal is in the form of crystallites encapsulated in a polymer matrix. The composite particles may be prepared by introducing a metal complex into a swollen polymer in an organic liquid which is a solvent for the metal complex, followed by thermal decomposition of the metal complex and removal of the swelling organic liquid. The composite particles may be used in biological applications.

대표청구항 ▼

Polymer/metal composite particles, having a size of from 0.1 micron to 1 mm, said composite particles comprising 99.5 to 33% by weight of a matrix based on a copolymer derived from (a) 0.5 to 30% by weight of at least one monomer bearing nucleophilic sites which can be coordinated with a metal compl

Polymer/metal composite particles, having a size of from 0.1 micron to 1 mm, said composite particles comprising 99.5 to 33% by weight of a matrix based on a copolymer derived from (a) 0.5 to 30% by weight of at least one monomer bearing nucleophilic sites which can be coordinated with a metal complex selected from the group consisting of metal-carbonyl, -organocarbyl and -hydrocarbon complexes, (b) 30 to 99% by weight of at least one monoethylenic monomer which does not coordinate with said metal complex, and (c) 0.5 to 50% by weight of at least one crosslinkable polyethylenic monomer which does not coordinate with said metal complex and, encapsulated in said matrix, 0.5 to 67% by weight of crystallites of a metal of Group VIa, VIIa, or vIII of the Periodic Classification of the elements in the zero valence state derived from said metal complex, the nature of said copolymer being such that particles of said copolymer are capable of swelling by 0.1 to 50 times their volume, in the presence of an organic liquid which is a solvent for said metal complex, said swollen volume of said particles being such that said copolymer particles become accessible to the molecules of said metal complex while remaining insoluble in said organic liquid, said organic liquid having a boiling point above the temperature of decomposition of said metal complex, and wherein said composite particles are compact and sized, and wherein the size of said metal crystallites is from 10-6 to 10-4 mm. The method of using the composite particles of claim 27, wherein said particles are employed as a solid phase in a biological application. The method of claim 36, wherein said composite particles, as they are or in an aqueous dispersion, are employed as a solid phase in a diagnostic test.