Spray Application

Forane^® 141b is not sold in the US.

Forane 141b is ideal for spray since it is a liquid at atmospheric conditions and has low vapor thermal conductivity. These properties allow the production of easy to process polyurethane chemicals and the production of polyurethane foam with excellent physical properties. See the referenced property and characteristics tables.

Forane 141b Properties
R-Value (Initial)	8.7
Thermal Conductivity @75ºF (Btu-in/ft2 hr ºF )	0.115
Thermal Conductivity @50ºF (Btu-in/ft2 hr ºF)	0.110
Parallel Compressive Strength (psi)	45
Perpendicular Compressive Strength (psi)	22

% Volume Change 28 days @
-20ºF	-0.71
158ºF	2.2
158ºF & 100% Relative Humidity	4.2

Forane 141b Blown Foam Formulation Characteristics
Properties	HCFC -141b Roofing
% Blowing agent on Total Foam	12.5
% CO2 blowing of blowing mixture	20
% Physical blowing agent blowing of blowing mixture	80
Free rise density (pcf)	25
Vapor pressure (psia)	3

Appliance Application

The low vapor thermal conductivity of Forane 141b makes it ideal for the appliance market. Forane 141b's low vapor thermal conductivity gives the polyurethane foam insulation the low k-value necessary to achieve the energy consumption requirements. Since Forane 141b is liquid at atmospheric conditions, it allows for easy processing of the polyurethane chemicals. As a liquid, Forane 141b also allows for the polyurethane system to achieve optimum flow which ensures that the foam flow will fill and insulate the entire cabinet.

Properties	Appliance HCFC -141b
In-place Density (pcf)	1.95 - 2.1
Thermal Conductivity @75°F (Btu-in/ft2 hr °F )	0.127
Thermal Conductivity @50°F (Btu-in/ft2 hr °F)	0.120
Flow Min. Fill Weight (gm)	295
Parallel Compressive Strength (psi)	20
Perpendicular Compressive Strength (psi)	17
Freeze Stable Density (lbs/ft³)	1.85
Dimensional Stability @ -13ºF % volume change during 14 days	-0.75
Dimensional Stability @ 158ºF & 97%RH % volume change during 14 days	3.1
Dimensional Stability @ 199ºF % volume change during 14 days	3.8

Forane 141b Foam Formulation Characteristics
Properties	HCFC -141b Appliance
% Blowing agent on Total Foam	11.5
% CO2 blowing of blowing mixture	25
% Physical blowing agent blowing of blowing mixture	75
Free rise density (pcf)	1.4
Vapor pressure (psia)	3

Panel Application

Polyurethane core metal-faced panels are used for construction. Often they are used for walk in refrigerators and freezers and other insulation purposes.

Forane 141b is an ideal blowing agent for this application. Forane 141b has a low vapor thermal conductivity that gives the polyurethane core blown with Forane 141b good insulation value. Additionally, because HCFC 141b is a liquid at atmospheric conditions it allows the foam system to be easily processed and gives good flow properties to the foam. Good flow allows the material to fill the panels uniformly.