-continued  30  US 10,303,056 B2  29  Herein  RA  is as defined above.  RLc1 2  and  RLc1 3  are each  independently a C$_{1 }$-C$_{10 }$ straight, branched or cyclic mon› ovalent hydrocarbon group, or  RLc1 2  and  RLc1 3  may bond  together to form an aliphatic ring with the carbon atom to  which they are attached.  RLc1 4  is furandiyl, tctrahydro› furandiyl or oxanorbomanediyl,  RLc1s  is hydrogen or a  C$_{1 }$-C$_{10 }$straight, branched or cyclic monovalent hydrocarbon  group which may contain a heteroatom.  Examples of the monomers from which the recurring  units having formula (A-3)-22 are derived are shown below.  Herein  RA  is as defined above.  (A-3)-22 