random copolymer

random copolymer

[′ran·dəm kō′päl·i·mər]
(organic chemistry)
Resin copolymer in which the molecules of each monomer are randomly arranged in the polymer backbone.
References in periodicals archive ?
According to SABIC the improved clarity in combination with the high stiffness opens up new opportunities for down-gauging products that are currently made in random copolymer PR In addition its higher flow means it can process at lower temperatures, leading to potential energy saving up to 10 per cent.
The company offers liquid homopolymer polybutadiene and random copolymer butadiene/styrene to enhance properties of UV/EB curable systems.
This observation suggests that compatibility of the M52N block-copolymer was improved by the P(MMA-co-DMA) random copolymer. It has been shown previously in the literature that the DMA units in P(MMA-co-DMA) copolymer increased the miscibility and stability of block-copolymer nanostructures in thermosets (e.g., epoxy, unsaturated polyester) until completion of the polymerization reaction [28, 29, 41].
In 2007 LyondellBasell introduced its Stretchene branded random copolymer polypropylenes aimed specifically at addressing rigidity, transparency coupled with high impact strength and production output.
Among the new grades are a 100-MFR random copolymer for thin-wall injection molding that boasts outstanding taste and odor performance.
These easy-flow materials are said to combine the stiffness of a highly nucleated polypropylene homopolymer with the transparency of a state-of-the-art propylene-ethylene random copolymer. (Targor GmbH)
Figure 5 is used to display the measured peeling force results for all used ethylene copolymers on a common basis (comonomer mole%), because it scales well with the branching frequency along the linear random copolymer chain.
According to SABIC: "The improved clarity in combination with the high stiffness opens up new opportunities for down-gauging products that are currently made in random copolymer PP, resulting in thin-walled products with a very good transparency." In addition its improved flow enables reduction of processing temperatures, leading to potential energy savings up to 10 per cent.
A new EVA random copolymer for oil-resistant crosslinked cable and flexible jacketing boasts a very high vinyl acetate content (40%) and a low MFI (less than 3), a difficult combination to achieve, according to the supplier, Arkema Inc., Philadelphia.
RG468MO, a polypropylene (PP) random copolymer produced by Borouge, a leading provider of innovative, value creating plastics solutions, was crowned with the Green Material Award for Innovation Application in recognition of its contribution to the development of packaging industry.