PPR(pentatricopeptide repeats)， Hakanan ana kira polypropylene (PPR) mara daidaito, kayayyakinsa suna da kyau, ƙarfin ƙarfi, kyakkyawan aikin sarrafawa, kyakkyawan ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar ƙwarewar

PP-R kuma aka kira uku nau'in polypropylene bututu, irregular copolymer polypropylene, amfani da irregular copolymer polypropylene bayan extruded zama bututu, allura gyara zama bututu sassa. Polypropylene irregular copolymer ma wani nau'i ne na polypropylene, da asalin tsarin sarkar polymer ta hanyar ƙara nau'ikan monomers daban-daban don canzawa. Ethylene ne mafi yawan amfani da monomer, wanda ya haifar da canje-canje a polypropylene jiki halaye. Idan aka kwatanta da pp homopolymer, unconventional copolymer inganta aikin gani (ƙara gaskiya da rage haze), inganta aikin juriya, ƙara sassauci, rage zafin jiki na narkewa, don haka kuma rage zafin jiki na zafi; A lokaci guda, daidai ne da homopolymers dangane da kwanciyar hankali na sinadarai, aikin keɓaɓɓen tururi na ruwa, da kuma aikin jin daɗin jiki (ƙananan wari da dandano). Ana amfani da su a fagen bushewa, allura, fina-finai da takarda extrusion aiki, a matsayin abinci marufi kayan, magunguna marufi kayan da yau da kullun masu amfani kayayyaki.