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Class Information
Number: 521/174
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 -xh reactant wherein x is a chalcogen atom > -xh reactant contains a c-x-c group
Description: Subject matter wherein the -XH reactant contains a -C-X-C group (X is a chalcogen).
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6005016 |
Rigid polyurethane foam based on polyethers of TDA |
Dec. 21, 1999 |
| 6001890 |
Open celled cellular polyurethane products |
Dec. 14, 1999 |
| 5998494 |
Rigid polyurethane foams |
Dec. 7, 1999 |
| 5990187 |
Method of preparing polyurethane foam utilizing organofunctionally modified polysiloxanes |
Nov. 23, 1999 |
| 5977198 |
Process for the production of resilient, flexible polyurethane foams |
Nov. 2, 1999 |
| RE36358 |
Flame retardant polyurethane foams |
Oct. 26, 1999 |
| 5962120 |
Abrasive article back up pad with foam layer |
Oct. 5, 1999 |
| 5962542 |
Process for producing hydrocarbon-blown hard polyurethane foams |
Oct. 5, 1999 |
| 5958992 |
Blowing agent blends |
Sep. 28, 1999 |
| 5958994 |
Method for decreasing the propensity for phase-out of the high molecular weight component of double metal cyanide-catalyzed high secondary hydroxyl polyoxypropylene polyols |
Sep. 28, 1999 |
| 5951796 |
Two component polyurethane construction adhesive and method of using same |
Sep. 14, 1999 |
| 5925687 |
Production of flexible polyurethane foams |
Jul. 20, 1999 |
| 5919395 |
Polyol combination |
Jul. 6, 1999 |
| 5916480 |
Storage-stable emulsions for producing fine-celled rigid foams based on isocyanate |
Jun. 29, 1999 |
| 5916994 |
Polymer polyols and preparation thereof |
Jun. 29, 1999 |
| RE36233 |
Use of softening additives in polyurethane foam |
Jun. 22, 1999 |
| 5902835 |
Group IVB metal blowing catalyst compositions for the production of polyurethane foams |
May. 11, 1999 |
| 5900087 |
Preparation of flexible, flame-bondable polyurethane-polyether foams having improved adhesion |
May. 4, 1999 |
| 5900442 |
Flexible polyurethane foams |
May. 4, 1999 |
| 5895824 |
Preparation of polyether polyols containing aromatics |
Apr. 20, 1999 |
| 5891928 |
Preparation of flexible, flame-bondable polyurethane polyether foams having improved adhesion |
Apr. 6, 1999 |
| 5889067 |
Open cell rigid polyurethane foam and method for producing the same and method for making vacuum insulation panel using same |
Mar. 30, 1999 |
| 5889068 |
Water blown polyurethane soling systems |
Mar. 30, 1999 |
| 5883146 |
Dimensionally stable closed cell rigid polyisocyanate based foam prepared from a froth foaming mixture |
Mar. 16, 1999 |
| 5880168 |
Open-celled rigid foams based on isocyanate |
Mar. 9, 1999 |
| 5877227 |
Low density flexible polyurethane foams |
Mar. 2, 1999 |
| 5874485 |
Flexible foams and flexible molded foams based on allophanate-modified diphenylmethane diisocyanates and processes for the production of these foams |
Feb. 23, 1999 |
| 5863959 |
Graft polymer dispersion having a third monomer and polyurethane foams having a reduced tendency to shrink prepared thereby |
Jan. 26, 1999 |
| 5863961 |
Flexible polyurethane foams and a process for the production thereof |
Jan. 26, 1999 |
| 5864002 |
Process for coloring polymer resins and products thereof |
Jan. 26, 1999 |
| 5854296 |
Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and tetramethylsilane |
Dec. 29, 1998 |
| 5852065 |
Low emission, cell opening surfactants for polyurethane flexible and rigid foams |
Dec. 22, 1998 |
| 5849806 |
Resilient polyurethane foams of polydiene diols and tackifying resin |
Dec. 15, 1998 |
| 5847014 |
Water blown, energy absorbing foams |
Dec. 8, 1998 |
| 5844013 |
Hydrophilic polyurethane gel foams, particularly for treating deep wounds, wound dressing based on hydrophilic polyurethane gel foams and method of manufacture |
Dec. 1, 1998 |
| 5840782 |
Reaction system for preparing microcellular elastomers |
Nov. 24, 1998 |
| 5834529 |
Pressurized, blowing agent-containing isocyanate semiprepolymer mixtures based on lignin-polyether polyols and their use for producing polyurethane foams |
Nov. 10, 1998 |
| 5824713 |
Foamable two-component material based on polyurethane |
Oct. 20, 1998 |
| 5824714 |
Polyether polyol for preparing rigid polyurethane foams |
Oct. 20, 1998 |
| 5814676 |
Flexible polyurethane foams and a process for the production thereof |
Sep. 29, 1998 |
| 5798533 |
Polyol compositions having good flow and water blown rigid polyurethane foams made thereby having good dimensional stability |
Aug. 25, 1998 |
| 5789451 |
Alkanolamine/carbon dioxide adduct and polyurethane foam therewith |
Aug. 4, 1998 |
| 5786402 |
Production of polyurethane foams in the presence of aminoalkyl- or aminophenylimidazoles as catalyst, and the use of these catalysts for the preparation of polyisocyanate polyaddition products |
Jul. 28, 1998 |
| 5776992 |
Halogen-free, flame retardant rigid polyurethane foam |
Jul. 7, 1998 |
| 5773483 |
Process for preparing a flexible foam |
Jun. 30, 1998 |
| 5773484 |
Enol-ether capped polyethers and surfactants produced therefrom |
Jun. 30, 1998 |
| 5770635 |
Polyol composition having good flow and formic acid blown rigid polyurethane foams made thereby having good dimensional stability |
Jun. 23, 1998 |
| 5762822 |
Dimensionally stable closed cell rigid polyisocyanate based foam prepared from a froth foaming mixture |
Jun. 9, 1998 |
| 5763502 |
Microvoid polyurethane materials |
Jun. 9, 1998 |
| 5750583 |
Process for the production of molded polyurethane products |
May. 12, 1998 |
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