摘要:
The present invention relates to polymer-platelet particle composites comprising at least one polyamide resin, at least one oxygen scavenging system, and platelet particles derived from at least one layered silicate material.
摘要:
This invention is directed to a polymer-clay nanocomposite, products produced from the nanocomposite, and a process for preparing a polymer-clay nanocomposite. The polymer-clay nanocomposite comprises (a) a matrix polymer, (b) an amorphous oligomer, and (c) a layered clay material.
摘要:
This invention relates to a composite composition comprising one or more polyamide polymers or copolymers, one or more layered clay materials, and one or more alkoxylated ammonium cations. The invention also relates to a process for preparing a nanocomposite and articles produced from the nanocomposite, including bottles.
摘要:
The invention is directed to a nanocomposite material and products produced from the nanocomposite material. This invention is also directed to a process for preparing a polymer-clay nanocomposite comprising the steps of (i) forming a concentrate comprising a layered clay material with a matrix polymer-compatible functionalized oligomer or polymer, and (ii) melt compounding the concentrate with a melt-processible matrix polymer to produce a polymer-clay nanocomposite.
摘要:
The invention relates to a polymer-clay nanocomposite comprising (i) a melt-processible matrix polymer, and incorporated therein (ii) a mixture of at least two layered clay materials. The invention also relates to articles produced from a nanocomposite and a process for preparing a nanocomposite.
摘要:
The present invention relates to polyester-platelet particle composite compositions comprising about 0.01 to about 25 weight percent platelet particles dispersed in at least one polyester wherein said composition has an I.V. of greater than about 0.55 dl/g, low shear melt viscosity greater than about 30,000 poise and a gas permeability which is at least 10 % lower than that of unmodified polyester. The platelet particles are preferably derived from chemically modified or synthetic clays and have a thickness of less than 2 nm and a diameter between 10 to 2000 nm. The high viscosity filled polyester composition is prepared by polycondensing a polyester-platelet particle precomposition in the solid state.
摘要:
A film or sheet having a glass transition temperature below about 23°C and a melting temperature greater than about 120°C is prepared by first preparing a polyester composition of about 50 to about 95 weight percent of a base copolyester having a melting temperature of less than about 220°C and exhibiting more than about 1 percent crystallinity after annealing for 2000 minutes at a temperature of which the base copolyester has a maximum crystallization rate; and about 5 to about 50 weight percent of a plasticizer suitable for use with the base copolyester. The polyester composition is formed into a film or sheet. During formation of the film or sheet or afterwards, crystallization is induced to provide a soft and flexible film or sheet.
摘要:
This invention is directed to a process for preparing an exfoliated, high I.V. polymer-platelet particle nanocomposite comprising the steps of: (i) melt mixing platelet particles with a matrix polymer-compatible oligomeric resin to form an oligomeric resin-platelet particle composite; and (ii) mixing the oligomeric resin-platelet particle composite with a high molecular weight matrix polymer, thereby increasing the molecular weight of the oligomeric resin-platelet particle composite and producing an exfoliated, high I.V. polymer nanocomposite material. The invention also is directed to a nanocomposite material produced by the process, products produced from the nanocomposite material, and a nanocomposite prepared from an oligomeric resin-platelet particle precursor composite.
摘要:
This invention is directed to a polyamide-clay nanocomposite, products produced from the nanocomposite, and a process for preparing a polyamide-clay nanocomposite. The polyamide-clay nanocomposite comprises (a) an amorphous matrix polyamide comprising (i) a residue of a dicarboxylic acid component comprising at least two diacids and (ii) a residue of a diamine component, and (b) a layered clay material, wherein the layered clay material is dispersed in the matrix polyamide.