Novel polymer containing cyclopentanylvinylene units

Claim 1

A homopolymer or copolymer comprising recurring units of the following formula ##STR22## wherein Z is bonded to a carbon of a five-membered ring by any two of bonds a to d, the remaining two bonds being filled by R 1 and R 2 , and Z represents ##STR23## R 1 to R 6 , independently from each other, represent a hydrogen atom or an alkyl group containing 1 to 6 carbon atoms; and endomethylene linkage can exist between the carbon atom to which R 3 is attached and the carbon atom to which R 4 is attached; q is 0 or 1; m and n, independently from each other, are 0, 1 or 2. and M represents a hydrogen atom or a positive ion selected from the group consisting of alkali metals, alkaline earth metals and quaternary ammonium, with the proviso that at least 1 mole % of the existing M is the above ion other than hydrogen; the degree of polymerization of said homopolymer or copolymer being about 10 to 10,000; and said copolymer being composed of more than 1 mole % of the unit of the formula (I) or (I') and less than 99 mole % of one biradical unit selected from the following groups: a. units of the following formula ##STR24## wherein X 1 , X 2 , X 3 and X 4 independently from each other, represent a hydrogen atom, a hydrocarbon radical containing 1 to 20 carbon atoms, polar group selected from the group consisting of cyano, ester, ether, halogen, amido and imido, or a hydrocarbon radical containing 1 to 20 carbon atoms and substituted by one said polar group, with the proviso that at least one of X 1 , X 2 , X 3 and X 4 is the polar group, the hydrocarbon substituted by the polar group, or an aryl radical group containing 6 to 20 carbon atoms; b. units of the following formula ##STR25## wherein X 5 and X 6 , independently from each other, represent a hydrogen atom, a hydrocarbon radical containing 1 to 10 carbon atoms, an ester radical, or a hydrocarbon radical containing 1 to 10 carbon atoms substituted by an ester radical, and at least one of X 5 and X 6 is the ester radical or the ester-substituted hydrocarbon radical containing 1 to 10 carbon atoms; c. units of the following formula ##STR26## wherein X 7 , X 8 , X 9 and X 10 , independently from each other, represent a hydrocarbon radical containing 1 to 20 carbon atoms, and at least one of X 7 , X 8 , X 9 and X 10 is an aryl or alkaryl radical containing 6 to 20 carbon atoms; d. units of the following formula ##STR27## wherein X 11 represents a hydrocarbon radical containing 1 to 10 carbon atoms or an ester group-containing radical containing 3 to 21 carbon atoms, and Z, q, m and n are the same as defined above; e. units of the following formula ##STR28## wherein X 12 , X 13 , X 14 and X 15 , independently from each other, represent a hydrogen atom, a hydrocarbon radical containing 1 to 10 carbon atoms, a polar group selected from the group consisting of cyano, ester and halogen, or a hydrocarbon radical containing 1 to 10 carbon atoms and substituted by one said polar group; e. units of the following formula ##STR29## wherein X 16 , X 17 , X 18 , X 19 , X 20 and X 21 are the same as X 12 , X 13 , X 14 and X 15 ; g. units of a monoolefinic hydrocarbon containing 4 to 20 carbon atoms; and h. units of a non-conjugated diene group containing 6 to 20 carbon atoms.