IP Library › Granted Patent US 7,053,132
Granted Patent B2
US 7,053,132 · App. 10/802,950 · Granted May 30, 2006

Blowing agent blends

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 7,053,132
App. No.
10/802,950
Granted
May 30, 2006
Kind
B2
Abstract

Foam blowing agent blends of trans-1,2-dichloroethylene and one or more pentanes are provided, as are polyol premixes and foam compositions containing such blends. The resulting foams exhibit dramatic improvement in fire resistance.

Claims (6)

1. A polyurethane foam composition comprising an isocyanate, a polyol and a foam blowing agent consisting of 5 to 25% by weight trans-1,2-dichloroethylene, 75 to 95% by weight of one pentane selected from the group consisting of n-pentane, i-pentane and cyclopentane and mixtures thereof and optionally water.

2. The polyurethane foam composition of claim 1 wherein the pentane is cyclopentane.

3. The polyurethane foam composition of claim 1 wherein the pentane is n-pentane.

4. The polyurethane foam composition or claim 1 wherein the pentane is i-pentane.

5. The polyurethane foam composition of claim 1 wherein the pentane is a blend of n-pentane and i-pentane.

6. The polyurethane foam composition of claim 1 wherein the pentane is a blend cyclopentane and i-pentane.

Assignments (1)
CHANGE OF NAME Recorded Nov 15, 2004
From: ATOFINA CHEMICALS, INC.
To: ARKEMA INC.
Reel/Frame 015394/0628 →