Adducts based on cyclic compounds and the use thereof as...

Details Adducts based on cyclic compounds and the use thereof as... Adducts based on cyclic compounds and the use thereof as...

2004-01-21

2008-08-12

Douyon, Lorna M. (Department: 1796)

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

C568S483000

Reexamination Certificate

active

07410504

ABSTRACT:
Adducts are obtained by reacting carbonyl compounds of the formula Iwhere R1and R2are as defined, with cyclic compounds of the formula IIwhere X is selected from oxygen, sulfur and N—R8, R3-R8are as defined, and n is an integer from 1 to 4, which adducts are useful as tanning agents and preservatives.

REFERENCES:
patent: 2546018 (1951-03-01), Smith et al.
patent: 2624764 (1953-01-01), Emerson et al.
patent: 2941859 (1960-06-01), Fein et al.
patent: 3983252 (1976-09-01), Buchalter
patent: 5130369 (1992-07-01), Hughes et al.
patent: 6033442 (2000-03-01), Denzinger et al.
patent: 2005/0125906 (2005-06-01), Hueffer et al.
patent: 38 11 267 (1989-05-01), None
patent: 44 44 709 (1996-06-01), None
patent: 0 066 224 (1982-12-01), None
patent: 1 462 309 (1977-01-01), None
patent: 1462309 (1977-01-01), None
patent: 03/095681 (2003-11-01), None
patent: 2004/067782 (2004-08-01), None
Lepage, Lucette et al. “Synthese de dialdehydes-1,5 dieniques par reaction en milieu acide, d'aldehydes aromatiques avec le methoxy-2 dihydro-3,4 2H-pyranne”, Bull. Soc. Chim. France, pp. 591-594, XP002285012, with English abstract 1988.
Heidemann, Eckhardt et al. “Leather”. Ullmann's Encyclopedia of Industrial Chemistry, vol. A15, pp. 259-281 1988.
Herfeld, H. Bibliothek des Leders, vol. 2, p. 191, Umschau Verlag Frankfurt 1988.
Vauck/Mueller, Grundoperationen chemischer Verfahrenstechnik, VCH Weinheim, vol. 7, pp. 638-740 and 765-766 1988.
U.S. Appl. No. 10/543,495, filed Jul. 27, 2005, Hueffer, et al.
U.S. Appl. No. 10/543,605, filed Jul. 28, 2005, Hueffer, et al.

Affiliated with

Also associated with

Rating

Adducts based on cyclic compounds and the use thereof as... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adducts based on cyclic compounds and the use thereof as..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adducts based on cyclic compounds and the use thereof as... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4006878