102  US 7,851,130 B2  101  -continued  -continued  H  0  Mw ~7900  Mw/Mn~ 1.73  (RA-6)  OH  OH  Mw ~8300  Mw/Mn~l.81  (RA-7)  OH  OH  (RA-8)  o  o  A  l:lf’oH  OH  Mw~ 8900  Mw/Mn~ 1.80  (RA-5)  Mw~ 13700  Mw/Mn~ 1.89  Mw  ~  10300  Mw/Mn~ 1.90  0  (RA-4) 