Process for rigid polyurethane foams
First Claim
Patent Images
1. Polyfunctional isocyanate-reactive composition comprising from 10 to 75 wt % (based on total isocyanate-reactive components) of an aromatic amine initiated polyether polyol, water and a physical blowing agent mixture containing, relative to the total physical blowing agent, from 1 to 50 mole % of 1,1,1,3,3-pentafluoropropane, from 50 to 99 mole % of isopentane and/or n-pentane.
8 Assignments
0 Petitions
Accused Products
Abstract
Process for preparing rigid polyurethane or urethane-modified polyisocyanurate foam using as blowing agent a mixture containing from 1 to 50 mole % 1,1,1,3,3-pentafluoropropane and from 50 to 99 mole % isopentane and/or n-pentane.
9 Citations
6 Claims
- 1. Polyfunctional isocyanate-reactive composition comprising from 10 to 75 wt % (based on total isocyanate-reactive components) of an aromatic amine initiated polyether polyol, water and a physical blowing agent mixture containing, relative to the total physical blowing agent, from 1 to 50 mole % of 1,1,1,3,3-pentafluoropropane, from 50 to 99 mole % of isopentane and/or n-pentane.
- 3. Polyfunctional isocyanate-reactive composition consisting essentially of water and a physical blowing agent mixture containing from 1 to 50 mole % of 1,1,1,3,3-pentafluoropropane and from 50 to 99 mole % of isopentane or n-pentane, or a mixture thereof.
-
6. A polyfunctional isocyanate-reactive composition comprising a physical blowing agent mixture containing, relative to the total blowing agent, from 1 to 50 mole % of 1,1,1,3,3-pentafluoropropane, and from 50 to 99 mole % of isopentane and n-pentane.
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeHuntsman Ici Chemicals LLC (Huntsman Corporation)
-
Original AssigneeImperial Chemical Industries PLC (IMPERIAL CHEMICAL INDUSTRIES)
-
InventorsColman, Luc Ferdinand Leon
-
Primary Examiner(s)Foelak, Morton
-
Application NumberUS09/159,480Time in Patent Office727 DaysField of Search521/131, 521/174, 521/115, 510/415, 252/182.26US Class Current521/131CPC Class CodesC08J 2375/04 PolyurethanesC08J 9/149 Mixtures of blowing agents ...
