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Class Information
Number: 521/161
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > Cellular products or processes of preparing a cellular product, e.g., foams, pores, channels, etc. > Cellular product derived from a -n=c=x containing reactant wherein x is a chalcogen atom > N=c=x reactant contains a heterocyclic ring
Description: Subject matter wherein the -N=C=X reactant contains a heterocyclic ring.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6846849 |
Saccharide-based resin for the preparation of foam |
Jan. 25, 2005 |
| 6822042 |
Saccharide-based resin for the preparation of composite products |
Nov. 23, 2004 |
| 6245825 |
Polyurethane foams |
Jun. 12, 2001 |
| 6242555 |
Light-stable elastomeric polyurethane mouldings and process for the production thereof |
Jun. 5, 2001 |
| 6201035 |
Use of low unsaturated polyether polyols in high resilience slabstock foam applications |
Mar. 13, 2001 |
| 6201034 |
Biodegradable polymers, the production thereof and the use thereof for producing biodegradable moldings |
Mar. 13, 2001 |
| 6031010 |
Polyurethane foam composition having improved flex fatigue |
Feb. 29, 2000 |
| 5614566 |
Method for the preparation of rigid foams having urethane and/or isocyanurate groups and being extensively open celled |
Mar. 25, 1997 |
| 5484818 |
Organic aerogels |
Jan. 16, 1996 |
| 5436277 |
Polyisocyanate compositions for the preparation of flexible polyurethane foams |
Jul. 25, 1995 |
| 5356946 |
Process for preparing reaction injection moldings |
Oct. 18, 1994 |
| 5356945 |
Reactive polyurethanes |
Oct. 18, 1994 |
| 5342881 |
Process for the standardization and stabilization of organic polyisocyanates and the stable products of this process |
Aug. 30, 1994 |
| 5288768 |
Urea-modified isocyanurates |
Feb. 22, 1994 |
| 5286759 |
Foaming system for rigid urethane and isocyanurate foams |
Feb. 15, 1994 |
| 5216035 |
Water-blown polyurethane integral skin foam |
Jun. 1, 1993 |
| 5202358 |
Process for the preparation of liquid storable organic isocyanates containing carbodiimide and/or uretone imine groups and their use for the preparation of polyurethane plastics |
Apr. 13, 1993 |
| 5169878 |
Composition and method of preparation of viscosity-stabilized polyisocyanates comprising triazine groups |
Dec. 8, 1992 |
| 5124370 |
Polyisocyanate mixtures containing isocyanurate groups, a process for their production and their use for the production of polyurethane foams |
Jun. 23, 1992 |
| 5102918 |
Process for producing modified organic polyisocyanate |
Apr. 7, 1992 |
| 5093384 |
Heat insulator made of shape memory polymer foam |
Mar. 3, 1992 |
| 5093383 |
Polyurethane/urea foams from isocyanate prepolymers and isocyanate reactive imino/enamino functional reactants |
Mar. 3, 1992 |
| 5071887 |
Polyurethane elastomer |
Dec. 10, 1991 |
| 5047439 |
Expandable powder coating composition, method of coating a substrate with heat-insulating foam and composite material obtained thereby |
Sep. 10, 1991 |
| 4987213 |
Polyurethane and process for preparing same |
Jan. 22, 1991 |
| 4937012 |
Low temperature stable polymethylene polyphenylene polyisocyanates |
Jun. 26, 1990 |
| 4906674 |
Polysocyanate compositions |
Mar. 6, 1990 |
| 4786655 |
Process for the preparation of polyurethanes containing uretdione rings formed in the presence of a bismuth salt of an organic carboxylic acid |
Nov. 22, 1988 |
| 4757095 |
Utilization of lactones and lactams in the preparation of polyurethane-polyurea products |
Jul. 12, 1988 |
| 4722946 |
Energy-attenuating polyurethanes |
Feb. 2, 1988 |
| 4719247 |
Deformable polyurethane having improved cure time |
Jan. 12, 1988 |
| 4707502 |
Process for the production of urethane-modified polyisocyanate preparations, the polyisocyanate preparations obtainable by this process and their use in the production of plastics based on |
Nov. 17, 1987 |
| 4642320 |
Reaction injection molded polyureas employing high molecular weight amine-terminated polyethers |
Feb. 10, 1987 |
| 4616043 |
Aliphatic polyurethane sprayable coating compositions and method of preparation |
Oct. 7, 1986 |
| 4581432 |
Heat-curable compositions which are storage-stable at room temperature and are based on compounds having reactive hydrogen atoms and polyisocyanates |
Apr. 8, 1986 |
| 4576747 |
Isocyanato-azetidinediones |
Mar. 18, 1986 |
| 4546120 |
Urethane forming compositions based on fatty polyols |
Oct. 8, 1985 |
| 4530941 |
Reaction injection molded polyurethanes employing high molecular weight polyols |
Jul. 23, 1985 |
| 4495309 |
Reaction injection molded polyurethanes, polyureas and polyurea-urethanes employing thiapolycyclic polyisocyanates |
Jan. 22, 1985 |
| 4478960 |
Diphenylmethane diisocyanate-based liquid polyisocyanate mixtures containing urethane groups, process for their preparation and their use for the preparation of flexible polyurethane foams |
Oct. 23, 1984 |
| 4442280 |
Heterogeneous systems of polyol/diphenyl methane uret dione diisocyanates and a process for their production |
Apr. 10, 1984 |
| 4386167 |
Polyisocyanurate polymer containing pendant urea groups, polyol dispersions and polyurethane compositions prepared therefrom |
May. 31, 1983 |
| 4382125 |
Isocyanurate-modified polymethylene polyphenylene polyisocyanate compositions |
May. 3, 1983 |
| 4360603 |
Process for the preparation of compounds containing s-triazine units and isocyanate groups or isocyanate-reactive groups and the production of polyurethanes containing these fillers |
Nov. 23, 1982 |
| 4359550 |
Polyisocyanurate polymers, dispersions, and cellular and non-cellular polyurethane products prepared therefrom |
Nov. 16, 1982 |
| 4359541 |
Process for the preparation of polyisocyanurate dispersions and compositions prepared therefrom |
Nov. 16, 1982 |
| 4330636 |
Carbamylbiuret-modified polyisocyanates |
May. 18, 1982 |
| 4326043 |
Process for the preparation of polyisocyanurate dispersions modified with halogenated alcohols and compositions prepared therefrom |
Apr. 20, 1982 |
| 4288566 |
Process for the production of highly elastic foams containing urethane groups from polyethers, modified polyisocyanates and cross-linking agents |
Sep. 8, 1981 |
| 4284730 |
Liquid carbodiimide- and uretonimine-isocyanurate-containing polyisocyanate compositions and microcellular foams made therefrom |
Aug. 18, 1981 |
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