§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US4546122A Expired / Lapsed US ⏱️ 0.0 years remaining

Flexible polyurethane foams

Assignee: Bayer Corp
•
Filing: 1984-08-06
•
Granted: 1985-10-08
•
Expires: 2004-08-06
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract The present invention is directed to a process for the production of a flexible polyurethane foam comprising reacting (a) an organic polyisocyanate, and (b) a coupled polyol which consists essentially of the reaction product of an organic polyisocyanate and an organic compound having a hydroxy functionality of at least 2 and a primary hydroxy group content of at least 30%, the ratio of hydroxyl groups in said organic compound to isocyanate groups being greater than 1, (c) in the presence of (i) a blowing agent, (ii) a catalyst, and (iii) a foam stabilizer, said foam stabilizer being capable of producing a flexible polyurethane foam meeting the standard specifications for high resilience polyurethane foam as set forth in ASTM D-3770-79, when used in a foam formulation based on toluene diisocyanate and either (A) a polymer polyol prepared by polymerizing one or more ethylenically unsaturated monomers in a polyether polyol, or (B) a dispersion of polyurea and/or polyhydrazodicarbonamide in a hydroxyl group containing material.

Inventors

  • 👤 David A. Radovich
  • 👤 Michael K. Lowery

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 11:30
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5036; C08G18/5045; C08G18/08; C08G18/10; C08G2110/00; C08G2110/0008; C08G2110/0041; C08G2110/005; Y; Y10; Y10S; Y10S521/00; Y10S521/904

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 156 words
A process for the production of a flexible polyurethane foam comprising reacting (a) an organic polyisocyanate, and (b) a coupled polyol which consists essentially of the reaction product of an organic polyisocyanate and an organic compound having an hydroxy functionality of at least 2 and a primary hydroxy group content of at least 30%, the ratio of hydroxyl groups in said organic compound to isocyanate groups being greater than 1, (c) in the presence of (i) a blowing agent, (ii) a catalyst, and (iii) a foam stabilizer, said foam stabilizer being capable of producing a flexible polyurethane foam meeting the standard specifications for high resilience polyurethane foam as set forth in ASTM D-3770-79, when used in a foam formulation based on toluene diisocyanate and either (A) a polymer polyol prepared by polymerizing one or more ethylenically unsaturated monomers in a polyether polyol, or (B) a dispersion of polyurea and/or polyhydrazodicarbonamide in an hydroxyl group containing material.
Claim 2
Dependent Claim 156 words
A process for the production of a flexible polyurethane foam comprising reacting (a) an organic polyisocyanate, and (b) a coupled polyol which consists essentially of the reaction product of an organic polyisocyanate and an organic compound having an hydroxy functionality of at least 2 and a primary hydroxy group content of at least 30%, the ratio of hydroxyl groups in said organic compound to isocyanate groups being greater than 1, (c) in the presence of (i) a blowing agent, (ii) a catalyst, and (iii) a foam stabilizer, said foam stabilizer being capable of producing a flexible polyurethane foam meeting the standard specifications for high resilience polyurethane foam as set forth in ASTM D-3770-79, when used in a foam formulation based on toluene diisocyanate and either (A) a polymer polyol prepared by polymerizing one or more ethylenically unsaturated monomers in a polyether polyol, or (B) a dispersion of polyurea and/or polyhydrazodicarbonamide in an hydroxyl group containing material.
Claim 3
Dependent Claim 27 words
The process of claim 1 wherein said organic compound has a functionality of from 2.5 to 4 and a primary hydroxyl group content of at least 50%.
Claim 4
Dependent Claim 12 words
The process of claim 1, wherein said organic compound is a polyether.
Claim 5
Dependent Claim 11 words
A polyurethane foam produced according to the process of claim 1.
Claim 6
Dependent Claim 19 words
The process of claim 1 wherein said organic compound has a molecular weight of from about 500 to 12,000.

References Cited (Backward Citations)

US28715A Cited
US29118A Cited
US3026275A Cited
US3115481A Cited
US3078239A Cited
US3049515A Cited
US3054778A Cited
USRE29118E Cited
USRE28715E Cited
US3741917A Cited
US3963681A Cited
US4042537A Cited
US4042540A Cited
US4054545A Cited
US4089835A Cited
US4120834A Cited
US4413111A Cited
US4452924A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-10-07 1989-04-08 1989-10-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-10-07 1993-04-08 1993-10-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-10-07 1997-04-08 1997-10-08 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag