01801nas a2200253   4500008004100000022001400041245011900055210006900174260006800243300001400311490000800325520084700333653002601180653003401206653001901240653001801259653003801277100002201315700002001337700002001357700002101377700001801398856013101416       2007                        eng d  a0021-899500aSynthesis and characterization of hindered amine light stabilizers based on end functionalization of polypropylene0 aSynthesis and characterization of hindered amine light stabilize  a111 RIVER ST, HOBOKEN, NJ 07030 USAbJOHN WILEY & SONS INCcMAY  a1596-16020 v1043 a<p>A polymeric hindered amine light stabilizer (HALS), where HALS moiety was attached at the terminal end of the polypropylene chain via end-functionalized vinylidine PP through simple organic reactions, was synthesized. It comprises the synthesis of vinylidine-terminated polypropylene by using Cp2ZrCl2/MAO as catalyst system and epoxidation of vinylidene polypropylene. The final product was synthesized by carrying out the reaction between epoxy end functionalized polypropylene and 4-amino-2,2,6,6-tetrametyl piperidine. The final product was characterized by using H-1 NMR, C-13 NMR, and FT-IR spectra. Functionality was calculated by using vapor phase osmometry and H-1 NMR. The solubility and diffusion coefficient of the product were calculated and also its stabilization performance was checked. (c) 2007 Wiley Periodicals, Inc.</p>10aend functionalization10afunctionalization of polymers10apolymeric HALS10apolypropylene10avinylidine and photostabilization1 aReddy, Raghunatha1 aKumar, Bijendra1 aRana, Sravendra1 aTevtia, Amit, K.1 aSingh, R., P.  uhttps://library.ncl.res.in/content/synthesis-and-characterization-hindered-amine-light-stabilizers-based-end-functionalization01432nas a2200181   4500008004100000022001400041245012100055210006900176260008900245300002000334520068100354653000901035653002301044653001901067100002001086700002001106856012401126       2007                        eng d  a1618-722900aSynthesis, characterization, and performance evaluation of polymeric hindered amine light stabilizers (HALS) in EPDM0 aSynthesis characterization and performance evaluation of polymer  a1, QUAI LEZAY-MARNESIA, F067000 STRASBOURG, FRANCEbEUROPEAN POLYMER FEDERATIONcAPR  aArticle No. 0383 a<p>Polymeric hindered amine light stabilizer (HALS), wherein the hindered amine functionality was attached to the brominated ethylene-propylene-diene terpolymer (EPDM) was synthesized. The brominated EPDM was synthesized as an intermediate for the synthesis of a new polymeric hindered amine light stabilizer. The grafting and functionalization reactions were characterized by FTIR and (HNMR)-H-1 spectroscopy. The photostabilizing efficiency of this polymeric HALS was studied and compared with conventional HALS under accelerated weathering conditions. The results of the study give evidence for superiority of polymeric HALS over that of melt blended conventional HALS.</p>10aEPDM10aPhotostabilization10apolymeric HALS1 aRana, Sravendra1 aSingh, Raj, Pal  uhttps://library.ncl.res.in/content/synthesis-characterization-and-performance-evaluation-polymeric-hindered-amine-light