??????

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