A method of making a low density, molded integral skin...

C - Chemistry – Metallurgy – 08 – J

Patent

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C08J 9/14 (2006.01) C08J 9/34 (2006.01) C08L 75/04 (2006.01)

Patent

CA 2248781

It has been found that non-chlorinated pentafluoropropane blowing agents may be used alone or in combination with water in a method of making flexible integral skin foams. For example, foams prepared using 1,1,1,3,3-pentafluoropropane (HFA- 245fa) alone or in combination with water exhibit physical characteristics such as resistance to abrasion and cracking on flex comparable to conventional chlorinated fluorocarbon blown foams. The method of the the present invention produce foams which are suitable for use in many applications including, for example, shoe soles.

Divulgation d'une méthode de production de mousses souples à peau intégrale pour laquelle peuvent être utilisés des agents de gonflement à base de pentafluoropropane non chlorés, seuls ou en combinaison avec l'eau. Par exemple, des mousses préparées à partir de 1,1,1,3,3-pentafluoropropane (HFA-245fa), seul ou en combinaison avec de l'eau, présentent des caractéristiques physiques telles que la résistance à l'abrasion et aux craquelures par flexion, qui sont comparables à elles des mousses classiques soufflées avec un fluorocarbure chloré. La méthode de la présente invention permet de produire des mousses pouvant être utilisées dans de nombreuses applications, par exemple des semelles de chaussure.

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