Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2006-03-21
2006-03-21
Shippen, Michael L. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
Reexamination Certificate
active
07015365
ABSTRACT:
A process for forming a cycloalkylidene bisphenol comprises: reacting a cycloalkanone compound of formula:where [A] is a substituted or an unsubstituted aromatic group, R1–R4independently represent a hydrogen or a C1–C12hydrocarbyl group; and “a” and “b” are integers independently having values from 0–3; with an aromatic hydroxy compound of formula [A]-OH, where [A] is as previously described; at a mole ratio of greater than or equal to about 20, in the presence of a sulfonic acid type ion exchange resin catalyst crosslinked with greater than or equal to about 8 weight percent of divinylbenzene, and a promoter selected from the group consisting of a mercaptan compound and a resorcinol compound; to form a cycloalkylidene bisphenol of formula:where [A], R1–R4, “a” and “b” are as previously described. Moreover, any acid catalyst can be used with a resorcinol promoter.
REFERENCES:
patent: 3242219 (1966-03-01), Farnham et al.
patent: 4052466 (1977-10-01), Sun
patent: 4191843 (1980-03-01), Kwantes et al.
patent: 4319053 (1982-03-01), Heuser et al.
patent: 4387251 (1983-06-01), Meyer et al.
patent: 4554309 (1985-11-01), Mark et al.
patent: 4766255 (1988-08-01), Ong et al.
patent: 4859803 (1989-08-01), Shaw
patent: 4982014 (1991-01-01), Freitag et al.
patent: 5210328 (1993-05-01), Freitag et al.
patent: 5276213 (1994-01-01), Serini et al.
patent: 6284931 (2001-09-01), Isota et al.
patent: 6486222 (2002-11-01), Kissinger et al.
patent: 6646097 (2003-11-01), Shyadligeri et al.
patent: 1242237 (1967-06-01), None
patent: 4032595 (1992-04-01), None
patent: 0481287 (1992-04-01), None
patent: 0 342 758 (1995-05-01), None
patent: 1 539 184 (1979-01-01), None
patent: 02/50000 (2002-06-01), None
“Product Data Sheet Aberlyst 16WET”; Nov. 2003; ROHM AND HAAS; http://www.rohmhaas.com/lonexchange/IP/literaturea4/16wet.pdf>; 2 pages.
Eastmond G.C. et al.; “Synthesis of Bulky Bis(ether Anhydride)s and Poly(ether Imide)s with Bulky Main-Chain Units”; Journal of Material s Chemistry, Cambridge, GB, vol. 7, No. 4, Apr. 1997; pp. 589-592.
International Search Report; International Application No. PCT/US2004/038270; International Filing Date: Nov. 16, 2004; Date of Mailing: Jun. 13, 2005; 9 pages.
Arakali Radhakrishna Sreenivasarao
Hasyagar Umesh Krishna
Kapila Debjani
Kishan Gurram
Krishnamurti Ramesh
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