Polyurethane elastomers

Details Polyurethane elastomers Polyurethane elastomers

2007-12-11

2007-12-11

Sergent, Rabon (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

C521S159000, C521S160000, C521S174000, C521S175000, C521S176000, C521S914000, C528S059000, C528S060000, C528S065000, C528S076000, C528S077000

Reexamination Certificate

active

10061186

ABSTRACT:
A polyisocyanate-based elastomer having a ratio of the storage modulus (E′) at 20° C. and the storage modulus (E′) at 120° C. of between 0.75 and 1.5, a tan δ at 100° C. of less than 0.1 and a maximum value of the tan δ of more than 0.8, the tan δ being the ratio of the loss modulus (E″) and the storage modulus (E′).

REFERENCES:
patent: 3983094 (1976-09-01), O'Shea
patent: 4101439 (1978-07-01), Russell et al.
patent: 4124572 (1978-11-01), Mao
patent: 4312973 (1982-01-01), Critchfield et al.
patent: 4379904 (1983-04-01), Ehrlich et al.
patent: 4436869 (1984-03-01), Zipp et al.
patent: RE31671 (1984-09-01), Bonk et al.
patent: 4524102 (1985-06-01), Hostettler
patent: 4554340 (1985-11-01), Heusch et al.
patent: 4767825 (1988-08-01), Pazos et al.
patent: 5001167 (1991-03-01), Wiltz et al.
patent: 5075408 (1991-12-01), Suzuki et al.
patent: 5418261 (1995-05-01), Helsemans et al.
patent: 5459170 (1995-10-01), Bleys et al.
patent: 5591779 (1997-01-01), Bleys et al.
patent: 6245825 (2001-06-01), Bleys
patent: 6884824 (2005-04-01), Bleys et al.
patent: 31 13 690 (1982-10-01), None
patent: 547765 (1993-06-01), None
patent: 61-238816 (1986-10-01), None
patent: H03-177413 (1991-08-01), None
G. Festel, “Dissertation”, (Jun. 1995), pp. 1-5, 7-13, 78, 131-141, 215-217, 223.
Kunststoff Handbuch 7, “Polyurethane”, (Sep. 1983), p. 4.
Vulkollan, Bayer publication, (Aug 1989) pp. 6,7, 11, 19, 22-23.
Bergmann-Schaeffer, 1975, pp. 232-244.
European Standard EN ISO 6721-2, 1996.
International Standard ISO 6721-5, 1996, “Plastics—Determination of dynamic mechanical properties—Part 5: Flexural vibration—Non-resonsance Method”.

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