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Class Information
Number: 521/906
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Polyurethane cellular product containing unreacted flame-retardant material
Description: Subject matter involving a cellular polyurethane polymer having incorporated therein a nonreactive material which enhances the ability of the polyurethane to withstand combustion or the effects of fire.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7288577 |
Polyurethane foam containing flame retardant blend of non-oligomeric and oligomeric flame retardants |
Oct. 30, 2007 |
| 7122135 |
Blend of organophosphorus flame retardant, lactone stabilizer, and phosphate compatibilizer |
Oct. 17, 2006 |
| 7005457 |
Multi-functional microencapsulated additives for polymeric compositions |
Feb. 28, 2006 |
| 6555591 |
Foam cross-linked with metal salt and process for production |
Apr. 29, 2003 |
| 6444718 |
Aquerous urea for fire control |
Sep. 3, 2002 |
| 6262135 |
Polyurethane foam containing a blend of monomeric and oligomeric flame retardants |
Jul. 17, 2001 |
| 6194475 |
Use of metal salts of ricinoleic acid in producing polyurethane |
Feb. 27, 2001 |
| 6080353 |
Method of molding a heat-resistant container |
Jun. 27, 2000 |
| 6010565 |
Foamed material for fireproofing and/or insulating |
Jan. 4, 2000 |
| 5981612 |
Production of flameproofed, rigid, isocyanate-based foams |
Nov. 9, 1999 |
| RE36358 |
Flame retardant polyurethane foams |
Oct. 26, 1999 |
| 5779775 |
Stock solution composition for use in production of hard polyurethane foam |
Jul. 14, 1998 |
| 5776992 |
Halogen-free, flame retardant rigid polyurethane foam |
Jul. 7, 1998 |
| 5741827 |
Production of flame-resistant flexible polyurethane foams |
Apr. 21, 1998 |
| 5719200 |
Flame-resistant polyurea foam |
Feb. 17, 1998 |
| 5622999 |
Polysilicic acid/polyisocyanate basic materials, binding materials and foams and process for preparing same |
Apr. 22, 1997 |
| 5569682 |
Fire-retardant polyurethane foams and method of producing |
Oct. 29, 1996 |
| 5536757 |
Polyurethane foams |
Jul. 16, 1996 |
| 5506278 |
Polyurethane foams |
Apr. 9, 1996 |
| 5393569 |
Water-permeable and fire-resistant film and a preparing method thereof |
Feb. 28, 1995 |
| 5376208 |
Water-permeable and fire-resistant product and a preparing method thereof |
Dec. 27, 1994 |
| 5229427 |
Flexible, combustion-modified, polyurethane foams |
Jul. 20, 1993 |
| 5223549 |
Process for the production of rigid polyurethane foams |
Jun. 29, 1993 |
| 5192811 |
Process for preparing a flame-resistant, elastic soft polyurethane foam |
Mar. 9, 1993 |
| 5175194 |
Process and composition for producing flame retardant rebonded foam products |
Dec. 29, 1992 |
| 5173515 |
Fire retardant foams comprising expandable graphite, amine salts and phosphorous polyols |
Dec. 22, 1992 |
| 5171758 |
Flame retardant urethane foams made using propylene oxide-based polyols |
Dec. 15, 1992 |
| 5169875 |
Urethane composition |
Dec. 8, 1992 |
| 5156762 |
Synergistic stabilizer compositions for polyols and polyurethane foam |
Oct. 20, 1992 |
| 5143943 |
Synergistic stabilizer compositions for polyols and polyurethane foam |
Sep. 1, 1992 |
| 5135961 |
Stabilized flame retardant polyol composition |
Aug. 4, 1992 |
| 5124367 |
Fire retardant compositions comprising dispersion of fire retardant in isocyanate-reactive compound with fatty acid ester and/or amide as dispersing agent |
Jun. 23, 1992 |
| 5114981 |
Process and composition for producing flame retardant rebonded foam products |
May. 19, 1992 |
| 5096623 |
Process and composition for producing flame retardant rebonded foam products |
Mar. 17, 1992 |
| 5093378 |
Process for producing flexible polyurethane foam |
Mar. 3, 1992 |
| 5087384 |
Melamine preparation and stable dispersion of melamine in polyether polyols |
Feb. 11, 1992 |
| 5086082 |
Ignition resistant polyurethane foams with melamine |
Feb. 4, 1992 |
| 5059637 |
Endothermic fire protective material |
Oct. 22, 1991 |
| 5057545 |
Fire retardant foam materials |
Oct. 15, 1991 |
| 5010113 |
Flame-retardant polyurethane products |
Apr. 23, 1991 |
| 5006564 |
Process for the production of flame-retardant polyurethane foams |
Apr. 9, 1991 |
| 4999383 |
Process for the production of flame-retardant polyurethane products |
Mar. 12, 1991 |
| 4960803 |
Fire retardant foam materials |
Oct. 2, 1990 |
| 4945118 |
(Haloneocarbyl-substituted)(aliphatic or oxyaliphatic)(halogenated aliphatic or oxyaliphatic)-phosphorates with polyurethanes |
Jul. 31, 1990 |
| 4931481 |
Process for the production of foams based on aromatic isocyanates using MG(OH).sub.2 and the foams produced thereby |
Jun. 5, 1990 |
| 4904703 |
High temperature foam |
Feb. 27, 1990 |
| 4895878 |
Flexible polyurethane foam having a high fire resistance |
Jan. 23, 1990 |
| 4892893 |
Flame retardant polyurethane foams resistant to cigarette smoldering ignition |
Jan. 9, 1990 |
| 4879320 |
Intumescent fire-retardant coating material |
Nov. 7, 1989 |
| 4876291 |
Mineral filler fire retardant composition and method |
Oct. 24, 1989 |
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