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Class Information
Number: 521/158
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 > With ketone, aldehyde, or aldehyde derivative
Description: Subject matter wherein a ketone, aldehyde, or aldehyde derivative is reacted with a -N=C=X containing material.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6362302 |
Method and compositions for spray molding polyurethane three dimensional objects |
Mar. 26, 2002 |
| 6136876 |
Weak bronsted acid derivatives for improving dimensional stability of polyurethane flexible foams |
Oct. 24, 2000 |
| 6063826 |
Polyisocyanate based xerogels |
May. 16, 2000 |
| 5990184 |
Polyisocyanate based aerogel |
Nov. 23, 1999 |
| 5889286 |
Premixes for the preparation of polyurethane or polyisocyanurate foams |
Mar. 30, 1999 |
| 5654345 |
In situ blown foams |
Aug. 5, 1997 |
| 5639800 |
Production of flame resistant, halogen-free polyurethane/polyureas |
Jun. 17, 1997 |
| 5631319 |
Pressurized, blowing-agent-containing isocyanate semiprepolymer mixtures based on mixtures of polyhydroxyl compounds and monoalcohols and/or hydroxyketones, the use thereof for the production |
May. 20, 1997 |
| 5616626 |
Phenolic foam composition and use thereof for in place foaming |
Apr. 1, 1997 |
| 5578656 |
Methods of preparing polymeric foams using cyclic urea blowing promoters |
Nov. 26, 1996 |
| 5569724 |
N-menthylol derivatives of polycondensation products, their preparation and use |
Oct. 29, 1996 |
| 5436278 |
Melamine resin foam, process for production thereof and melamine/formaldehyde condensate |
Jul. 25, 1995 |
| 5432207 |
Phenolic foam composition and use thereof for "in place" foaming |
Jul. 11, 1995 |
| 5356946 |
Process for preparing reaction injection moldings |
Oct. 18, 1994 |
| 5118722 |
Method of producing elastic foams having a base of polyurethane by microwave foaming |
Jun. 2, 1992 |
| 5093378 |
Process for producing flexible polyurethane foam |
Mar. 3, 1992 |
| 5081204 |
Polyurethane elastomers |
Jan. 14, 1992 |
| 5081210 |
Polyurethane elastomers |
Jan. 14, 1992 |
| 5079328 |
Polyurethane elastomers |
Jan. 7, 1992 |
| 5079327 |
Polyurethane elastomers |
Jan. 7, 1992 |
| 5079271 |
Method for the preparation of polymeric foams |
Jan. 7, 1992 |
| 4997858 |
Method for preparing a flexible polyurethane foam |
Mar. 5, 1991 |
| 4722946 |
Energy-attenuating polyurethanes |
Feb. 2, 1988 |
| 4654375 |
Fire-retardant polyurethane foam and method and resin for preparing the same |
Mar. 31, 1987 |
| 4654377 |
Process for the preparation of low molecular weight polyhydroxyl compounds |
Mar. 31, 1987 |
| 4647595 |
Process for producing a urethane-modified polyisocyanurate foam |
Mar. 3, 1987 |
| 4595711 |
Aromatic polyester polyols fluorocarbon compatibilized with ethoxylate propoxylate compounds for urethane and isocyanurate foams |
Jun. 17, 1986 |
| 4562240 |
Bicyclic amide acetal/polyol/polyisocyanate polymers |
Dec. 31, 1985 |
| 4558114 |
Polymers derived from polyisocyanates, bicyclic amide acetals and oxazolines |
Dec. 10, 1985 |
| 4555530 |
Halogenated phenolic polyols and rigid cellular compositions made therefrom |
Nov. 26, 1985 |
| 4400560 |
Process for the preparation of a mixture of low-molecular weight polyhoric alcohols |
Aug. 23, 1983 |
| 4394306 |
Bromine containing fire retardant compositions of matter |
Jul. 19, 1983 |
| 4383100 |
Polyurethanes from oligomeric formal diols of THF copolymer glycols |
May. 10, 1983 |
| 4379862 |
Process for the preparation of polyurethane resins using low molecular weight polyhydroxyl compounds prepared by the condensation of formaldehyde |
Apr. 12, 1983 |
| 4367294 |
Preparation of polyurethane foams modified with melamine-formaldehyde precondensates |
Jan. 4, 1983 |
| 4341909 |
Preparation of low molecular weight polyhydroxyl compounds |
Jul. 27, 1982 |
| 4326086 |
Process for the preparaton of low molecular weight polyhydroxyl compounds |
Apr. 20, 1982 |
| 4324716 |
Solutions of polyisocyanate polyaddition products |
Apr. 13, 1982 |
| 4322523 |
Methylolated mono- and oligosaccharides |
Mar. 30, 1982 |
| 4311802 |
Process and apparatus for the continuous production of foamed plastics material having improved fire resistance |
Jan. 19, 1982 |
| 4300003 |
Process for the preparation of low molecular polyhydroxyl compounds |
Nov. 10, 1981 |
| 4294934 |
Process for the production of elastic, optionally cellular, polyurethane ureas |
Oct. 13, 1981 |
| 4288566 |
Process for the production of highly elastic foams containing urethane groups from polyethers, modified polyisocyanates and cross-linking agents |
Sep. 8, 1981 |
| 4284729 |
Process for coloring thermosetting resins |
Aug. 18, 1981 |
| 4275169 |
Intumescent flexible polyurethane foam having incorporated into the reaction mixture an aliphatic aldehyde |
Jun. 23, 1981 |
| 4255529 |
Process for the preparation of cellular or non-cellular polyurethane resins |
Mar. 10, 1981 |
| 4247654 |
Alkoxylated formose polyols and their use in polyurethane plastics |
Jan. 27, 1981 |
| 4247653 |
Process for the preparation of low molecular weight polyhydroxyl compounds |
Jan. 27, 1981 |
| 4246361 |
Method for producing flame- and smoke-resistant polyurethane foam sheet by incorporation of a urea derivative in reaction mixture |
Jan. 20, 1981 |
| 4243758 |
Process for the production of reaction products using aqueous formose which has been prepared with the use of a lead catalyst which lead catalyst has been removed from the formose product by c |
Jan. 6, 1981 |
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