??????

???????? HPMC ?????? ???????? PVC ???????????? ???????, ??? ??????? ??? ?? ????????????? ??????????? ??????? ???? ???, ?????? ????? ?? ???????? ????? ???, ???????? ????? ??? ??? ???????? ???????? ??????????? ???? ???? ???? ????? ????????????? ????????, ??????? ?????? ???????????? ??? ???????????? ???? ?????????? ??????? (PVA) ??? ??????????????????? ???????????????? (HPMC) ????? ????????? ?? ??????, ???? ???????? ???????? ???? ?????? ??????, ??? ?????????????? ?????? ???? ??????? ???????