graft copolymer


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graft copolymer

[¦graft kō′päl·ə·mər]
(organic chemistry)
Any high polymer composed of two or more different polymeric entities chemically united.
References in periodicals archive ?
After completing the reaction, a small amount of graft copolymer was poured into Petri dish and dried the samples in oven at 40[degrees]C for 48 h.
followed by the graft polymerization of VAc monomer via chain polymerization to form starch-g-PVAc graft copolymer.
Kollicoat IR, an ethylene glycol and vinyl alcohol graft copolymer, is BASF s highly versatile and safe-in-use instant release coating polymer.
Presentations will include: "Studying and Assessing Human Pigmentation," Nikiforos Kollias, University of British Columbia (formerly of Johnson & Johnson); "An Aspect of the Progression of Skin Photoaging-The Concerted Reaction of Keratinocytes, Fibroblasts, and Neutrophils," Hitoshi Masaki, Tokyo University of Technology, Japan; "A Sunscreen for the World--A Universal Challenge in Sunscreen Development," John Staton, Dermatest, Australia; "Photostability and Photoprotection: Today and in the Future," Craig Bonda, HallStar; "Formulating Sun Protection Products with a Novel Hydrogel Graft Copolymer," Kishore Shah, Polytherapeutics, Inc.
The graft copolymer is prepared by graft-polymerizing an aromatic alkenyl and a vinyl cyanide onto a rubber polymer.
1 to 5 mass percent of an acrylic graft copolymer having a poly(methyl methacrylate-methacrylic acid) backbone and polyethylene glycol side chains; approximately 0.
The material is an impact-modified graft copolymer with notched Izod impact strength of 2.
Finally, it can be suggested that the synergetic effects caused by dilution of styrene with methanol or ethanol and the addition of acids can be used to reduce monomer consumption as well as processing doses in a way that would improve the economy of the grafting process and the mechanical properties of the graft copolymer.
7) Selected block and graft copolymer structures are shown in Scheme 1.
Acrylic Polyol - MDI (MMDI & PMDI) - TDI - Specialty Isocyanates - Standard Polyether Polyol - Polyether Graft Copolymer Polyol - Polyester Polyol - PTHF Polyol
Influences of MMA concentration of the graft copolymer on properties of PB are shown in Table 3.