151  US 9,323,150 B2  152  -continued  The content of repeating unit expressed by general formula  (A) in the resin (Ab), based on all the repeating units of the  resin (Ab), is preferably in the range of Oto 90 mo! %, more  preferably 5 to 80 mo! %, further more preferably 10 to 70 50  mo! % and most preferably 20 to 60 mo!%.  It is also preferred for the resin (Ab) to comprise any of  repeating units of general formulae below. In the general  formulae, j is an integer ofO to 3, preferably Oto 2 and more  preferably O or 1.  The resin (Ab) in its one form comprises at least the repeat› ing unit of the formula below as the repeating unit expressed  by general formula (A).  OH  OH  OH  OCH3  OCH3  OH  OH  OH  OH  -+CH2-CH +› I  ’  I  (OH))  ~CQ9  (OHlf  ---t-CH2 - CH  -j- 6--o  (OH))  OH  Particular examples of the repeating units of these general  formulae are shown below.  --+CH2-CH +-- I  ~  I  j  (OH))  --+CH2-CH+-- 6--o  (OHlf  --+CH2-CH-t- -continued 