Process for the preparation of a coagulated material
OwnerDirk P. Spek, Leonardus A. van der Heydeninventors
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Abstract
The invention relates to a process for the preparation of a coagulated material by impregnating a textile cloth in an impregnating bath containing at least a coagulable polymer latex followed by coagulation in a coagulating bath. The process of the invention is characterized in that the coagulation is carried out from the water phase, whereas the impregnating bath contains a (chemical or physical) foaming agent, wherein foaming occurs simultaneously with the coagulation or immediately thereafter. It is surprisingly found that according to the present process a high quality coagulated material is obtained, which is comparable with the coagulated material, obtained according to conventional processes.
Claims26
A composition comprising
- (a) a coagulable polymer latex,
- (b) a foaming agent comprising a low boiling water insoluble halogenated hydrocarbon, and
- (c) a textile cloth impregnated with the combination of (a) and (b).
In a process for preparing a coagulated material comprising impregnating a textile cloth with at least a coagulable polymer latex and coagulating said polymer on the cloth, the improvement comprising carrying out the coagulation from the water phase and foaming the coagulated polymer with a foaming agent comprising a low boiling water insoluble halogenated hydrocarbon, said foaming occurring simultaneously with or immediately after the coagulation.
Dependencies are inferred from the claim text.