Graft copolymers preparation

The epoxy-acrylic resin referred to above is a graft copolymer prepared by the polymerisation of acrylic monomers in the presence of the epoxy resin in such a way that grafting of the acrylic onto the epoxy takes place. Water dispersibility is achieved by neutralising carboxyl groups in the acrylic polymer chain with ammonia or amine. Amino or phenolic resins are used as crosslinkers. Alternatively, solvent-borne epoxy-amino or epoxy-phenolic lacquers can be used. 

S. Himei, M. Takine, and K. Akita, Blend of vinyl chloride resin and graft copolymer prepared by consecutive polymerization of monomers onto butadiene polymer, US Patent 3 288886, assigned to Kane-gafuchi Chemical Ind., November 29,1966. 

PE Graft Copolymers Prepared by Graft-from Reactions... 

Table 5. Characterization of graft copolymers prepared in aqueous media...

Samples for 180° peel tests were prepared according to standard neoprene recipes (9). Neoprene AC or a graft copolymer prepared from it was mixed on an open mill at room temperature for 20-25 min with the following compounding ingredients in succession ... 

Ambrose and Newell studied the synthesis of graft copolymers prepared from chlorinated poly(butadiene) and a-methylstyrene in toluene. They reported that Me3 A1 was... 

Fig. 39. Schemes for graft copolymers prepared from functionalized pIB...

Table 13. Graft copolymers prepared using grafting through and CRP methods...

DeSimone. J. M., A. M. Hellstern, T. C. Ward, J. E. McGrath, S. D. Smith, P. M. Gallagher, V. J. Krukonis, J. Stejskal, D. Strakova, and P. Kratochvil. 1988b. Elucidation of the chemical composition distribution of graft copolymers prepared by the macromonomer technique. Paper presented at the ACS Meeting, Los Angeles, CA, November. 

Synthesis, characterization, and chemical composition distribution investigations of graft copolymers prepared by the macromonomer technique. In Contemporary topics in polymer science, vol. 6 Multiphase macromolecular systems, ed. B. M. Culbertson. New York Plenum Press. 

Conversion chemical heterogeneity of graft-copolymers prepared from... 

Stejskal, J., P. Kratochvil, and A. D. Jenkins. 1987. Graft copolymer statistics. 2. Application to graft copolymers prepared from macromonomers. Macromolecules 20 181. 

Table 1 summarizes the literature data on the graft copolymers prepared by polystyrene macromonomers, which were synthesized by anionic polymerization. 

Table 1. Graft copolymers prepared by polystyrene macromonomers synthesized anionically...

Table 3. Graft copolymers prepared by macromonomers synthesized by radical polymerization... 

Table 5 summarizes the data reported in the literature on the synthesis of graft copolymers prepared from macromonomers synthesized by post polymerization reactions. 

Representative Graft Copolymers Prepared by Carbocationic Techniques... 

Despite the efficiency of the compatibihzation with the help of block copolymers, their use in commercial blends has been on a rather limited scale since no profitable ways are available to synthesize such copolymers. The present authors are unaware whether the market offers any PA/PO blends compatibUized with block or grafted copolymers prepared in advance. 

Figure 1. Solubility data of graft copolymers prepared with different levels of free radical initiator.

Gryte CC, Koroneos C, Agarwal A, Hochberg A (1980) Drag reduction characteristics of graft copolymers prepared by the gamma irradiation of poly (oxyethylene) in the presence of acrylic acid. Polym Eng Sci 20 478 84... 

Meng T, Gao X, Zhang J, Yuan JY, Zhang YZ, He JS (2009) Graft copolymers prepared by atom transfer radical polymerization (ATRP) from cellulose. Polymer 50 447-454... 

This and the following subsection will compare heterogeneous and homogeneous synthetic methods, with emphasis on cellulosics. Fibrous cellulosic graft copolymers, prepared by radiation-induced free-radical copolymerization reactions of vinyl monomers with cellulose, retain some... 

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