초록 ▼

A polymer reinforcing material, consisting of a particulate or filamentary mineral component having a thin polymer-interactive layer, averaging about 5-500 Angstrom in thickness, of silicon-free and heavy metal-free organic molecules chemically bonded to its surface by covalent bonding, when used in

A polymer reinforcing material, consisting of a particulate or filamentary mineral component having a thin polymer-interactive layer, averaging about 5-500 Angstrom in thickness, of silicon-free and heavy metal-free organic molecules chemically bonded to its surface by covalent bonding, when used in relatively small amounts in the range from 1 to 30 phr is capable of providing superior retention or increase of desirable polymer properties especially impact resistance, compared to the use of conventional reinforcement in the same polymer, while providing increased stiffness and retention of strength at elevated temperatures. The reinforcing material is prepared by contacting a particulate or filamentary mineral component which has reactive sites at its surface with certain organic compounds at reaction conditions at which a covalent chemical bond is established between the mineral surface and the organic compound by reaction of a reactive site of the mineral with a site-reactive atom or group of the organic compound.

대표청구항 ▼

A reinforced thermoplastic composition comprising a thermoplastic polymer matrix having intimately distributed therein a chemically modified mineral reinforcing component, wherein said matrix is a non-elastomeric thermoplastic poly(vinylarene) and said reinforcing component is a particulate or filam

A reinforced thermoplastic composition comprising a thermoplastic polymer matrix having intimately distributed therein a chemically modified mineral reinforcing component, wherein said matrix is a non-elastomeric thermoplastic poly(vinylarene) and said reinforcing component is a particulate or filamentary mineral polymer-reinforcing material having chemically bonded to its surface by covalent chemical bonding a thin layer averaging about 5-500 Angstrom in thickness of silicon-free and heavy metal-free organic molecules which contain at least a substantial segment capable of interacting with said matrix polymer to provide improved adhesion, said segment having an average molecular weight at least about one-sixth that of said matrix polymer.