Sulfonic acid polyol compound, polyurethane resin,...

Details Sulfonic acid polyol compound, polyurethane resin,... Sulfonic acid polyol compound, polyurethane resin,...

2008-09-23

2010-06-15

Sullivan, Daniel M (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C528S065000, C428S842300, C428S800000

Reexamination Certificate

active

07737304

ABSTRACT:
A compound represented by the Formula (1) below is provided:wherein X denotes a divalent linking group, R1and R2independently denote an alkyl group having 3 or more carbons and having at least one hydroxy group or an aralkyl group having 8 or more carbons and having at least one hydroxy group, the alkyl group and aralkyl group may have a substituent, and M denotes a hydrogen atom or a cation. There is also provided a polyurethane resin obtained by polymerization of a polyisocyanate and a polyol that includes the compound. There is also provided a magnetic recording medium that includes a non-magnetic support and, above the support, at least one magnetic layer including a ferromagnetic powder dispersed in a binder that includes the polyurethane resin. There is also provided a magnetic recording medium that includes a non-magnetic support, above the support at least one non-magnetic layer including a non-magnetic powder dispersed in a binder (1), and, above the non-magnetic layer, at least one magnetic layer having a ferromagnetic powder dispersed in a binder (2), in which binder (1) and/or binder (2) is the polyurethane resin.

REFERENCES:
patent: 3084187 (1963-04-01), Gaertner
patent: 3579457 (1971-05-01), Lincoln et al.
patent: 60382 (1968-11-01), None
patent: 1617077 (1971-02-01), None
patent: 03-066660 (1991-03-01), None
patent: 05-070545 (1993-03-01), None
patent: 09-138939 (1997-05-01), None

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