Organic compounds -- part of the class 532-570 series – Organic compounds – Carbonate esters
Reexamination Certificate
2005-04-19
2005-04-19
Sergent, Rabon (Department: 1711)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbonate esters
C528S076000, C528S085000, C528S370000, C558S265000, C558S266000, C558S268000, C558S270000, C558S274000, C568S592000, C568S593000, C568S595000
Reexamination Certificate
active
06881856
ABSTRACT:
A thermoplastic polyurethane useful for elastomers, elastic fibers and artificial leathers contains a polyaddition product of a diisocyanate and a chain extender with a liquid polyethercarbonate diol which is a reaction product of a carbonate compound with a polyether diol having structural units (a) (—(CH2)6—O—) and at least one member of structural units (b) (—(CH2)2—O) and (c) (—CH2CH(CH3)—O—), and in which the units (b) are present in an average number (n) of moles of 0 to 5 per mole of the units (a), the units (c) are present in an average number (m) of moles of 0 to 5 per mole of the units (a), and the total average number (n+m) of moles of the units (b) and (c) is more than 1 but not more than 5, per mole of the units (a).
REFERENCES:
patent: 3639354 (1972-02-01), Muller et al.
patent: 4101529 (1978-07-01), Ammons
patent: 4476293 (1984-10-01), Robinson
patent: 4795810 (1989-01-01), Harris
patent: 4808691 (1989-02-01), Konig et al.
patent: 4861909 (1989-08-01), Harris
patent: 4978691 (1990-12-01), Murai et al.
patent: 5015753 (1991-05-01), Harris
patent: 5045622 (1991-09-01), Kohno et al.
patent: 5100999 (1992-03-01), Murai et al.
patent: 5173543 (1992-12-01), Bott et al.
patent: 5374704 (1994-12-01), Muller et al.
patent: 0 292 772 (1988-11-01), None
patent: 0 358 555 (1990-03-01), None
patent: 0603 675 (1994-06-01), None
patent: 57-172953 (1984-04-01), None
patent: 63-120819 (1988-12-01), None
patent: 02255822 (1990-10-01), None
Kaneko Takayoshi
Kashiwagi Kohichi
Kunimura Masaru
Tanaka Hideho
DLA Piper Rudnick Gray Cary USA US LLP
Sergent Rabon
Ube Industries Ltd.
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