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Class Information
Number: 521/177
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 > C-x-c reactant contains a carbocyclic ring, e.g., aromatic, etc.
Description: Subject matter wherein the -XH containing -C-X-C- reactant contains a carbocyclic ring.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6861453 |
Process for producing a urethane-modified polyisocyanurate foam |
Mar. 1, 2005 |
| 6569352 |
Phthalic anhydride based polyester-ether polyols and urethane prepolymers produced therefrom |
May. 27, 2003 |
| 6211259 |
Low volatile reinforcing system |
Apr. 3, 2001 |
| 6077927 |
Process for coloring polymer resins and products thereof |
Jun. 20, 2000 |
| 6001890 |
Open celled cellular polyurethane products |
Dec. 14, 1999 |
| 5874021 |
Method for producing low-fuming rigid polyurethane foam |
Feb. 23, 1999 |
| 5872156 |
Method for producing low-fuming rigid polyurethane foam |
Feb. 16, 1999 |
| 5864002 |
Process for coloring polymer resins and products thereof |
Jan. 26, 1999 |
| 5824714 |
Polyether polyol for preparing rigid polyurethane foams |
Oct. 20, 1998 |
| 5741847 |
Polymer polyols containing halogenated aromatic monomers and polyurethane foam made therefrom |
Apr. 21, 1998 |
| 5731398 |
Black colorant composition exhibiting low flairing |
Mar. 24, 1998 |
| 5645928 |
Heat insulation panels manufactured from modified polyisocyanurate foams |
Jul. 8, 1997 |
| 5627220 |
Process of the preparation of modified polyisocyanurate foams for heat insulation materials |
May. 6, 1997 |
| 5369138 |
Preparation of flexible, molded, cold-cure polyurethane foams |
Nov. 29, 1994 |
| 5225101 |
Polyol compositions for producing rigid polyurethane foams |
Jul. 6, 1993 |
| 5216040 |
Rigid polyurethane foam and process for producing the same |
Jun. 1, 1993 |
| 5173517 |
Rigid polyurethane foam and heat insulator obtained therefrom |
Dec. 22, 1992 |
| 5169875 |
Urethane composition |
Dec. 8, 1992 |
| 5107068 |
Polyurethane resin and utilization thereof |
Apr. 21, 1992 |
| 5077321 |
Process for the preparation of polyurethane substances using specific stabilizer systems |
Dec. 31, 1991 |
| 5026739 |
Methods of producing rigid polyurethane foams for interior or exterior use for automobiles |
Jun. 25, 1991 |
| 4990545 |
Articles with polyurethane resin having memory shape characteristics and method of utilizing same |
Feb. 5, 1991 |
| 4943597 |
Polyether polyol formulations for hard CFC replacement by water blowing in rigid polyurethane foams |
Jul. 24, 1990 |
| 4931486 |
Poly(alkylene carbonate) polyols as antistatic additives for polyurethanes |
Jun. 5, 1990 |
| 4888365 |
Isocyanate terminated quasi-prepolymers useful for preparing polyurethane/polyisocyanurate foams having low thermal conductivity |
Dec. 19, 1989 |
| 4742089 |
Rigid polyurethane foam and process for producing the same |
May. 3, 1988 |
| 4699932 |
Halogenated-hydrocarbon blown, open-cell, polyurethane foam and a composition and method for the fabrication thereof |
Oct. 13, 1987 |
| 4596836 |
Stabilizing urethanes with antioxidants |
Jun. 24, 1986 |
| 4543369 |
Alkoxylated polyester polyols and polyurethanes made therefrom |
Sep. 24, 1985 |
| 4542163 |
Method for the manufacture of polyisocyanurate foams |
Sep. 17, 1985 |
| 4539378 |
Vinyl polymer polyols made using epoxy resin-modified polyols |
Sep. 3, 1985 |
| 4539339 |
Polyurethane foams made from vinyl polymer polyols |
Sep. 3, 1985 |
| 4518720 |
Flexible polyurethane foams made from polyether polyols modified with epoxy resin-diamine adducts |
May. 21, 1985 |
| 4490490 |
High load bearing flexible polyurethane foams |
Dec. 25, 1984 |
| 4487853 |
Low ethylene oxide/high primary hydroxyl content polyether-ester polyols and polyurethane foams based thereon |
Dec. 11, 1984 |
| 4473669 |
Phenolic polyols and rigid cellular compositions derived therefrom |
Sep. 25, 1984 |
| 4461852 |
Phenolic resin foam and process for producing the same |
Jul. 24, 1984 |
| 4440664 |
Process for the dispersion of chain extender in polyol |
Apr. 3, 1984 |
| 4430247 |
Process for preparing an oxyalkylated product |
Feb. 7, 1984 |
| 4390641 |
Flame-retardant benzylic-ether phenolic modified foam and method of preparing same |
Jun. 28, 1983 |
| 4374970 |
Sulfur-modified copolyether glycols, a method for preparing them, and polyurethanes prepared therefrom |
Feb. 22, 1983 |
| 4373084 |
Sulfur-modified polypropylene ether glycols, a method for preparing them, and polyurethanes prepared therefrom |
Feb. 8, 1983 |
| 4373034 |
Modification of polyols with epoxy resins for use in flexible polyurethane foams |
Feb. 8, 1983 |
| 4371687 |
Sulfur-modified polytetramethylene ether glycols, a method for preparing them, and polyurethanes prepared therefrom |
Feb. 1, 1983 |
| 4323658 |
Polyisocyanurates from diols modified with epoxy resins |
Apr. 6, 1982 |
| 4302551 |
Process for the preparation of cellular polymers having urethane groups, isocyanurate groups, or both |
Nov. 24, 1981 |
| 4288562 |
Initiators for isocyanate reactions |
Sep. 8, 1981 |
| 4260514 |
Urethane foam compositions |
Apr. 7, 1981 |
| 4235988 |
Delivery means for biologically active agents |
Nov. 25, 1980 |
| 4220728 |
Process of reacting isocyanates with active hydrogen containing compounds using sulfonium zwitterions as initiators |
Sep. 2, 1980 |
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