??????

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