Process for the production of elastic molded articles

Details Process for the production of elastic molded articles Process for the production of elastic molded articles

C - Chemistry, Metallurgy

08

G

402/141, 18/660,

C08G 18/32 (2006.01) C08G 18/50 (2006.01) C08G 18/66 (2006.01) C08J 9/34 (2006.01) C08L 75/12 (2006.01)

Patent

CA 1243443

PROCESS FOR THE PRODUCTION OF ELASTIC MOLDED ARTICLES ABSTRACT OF THE DISCLOSURE Elastic molded articles having a closed surface layer are made from polyurea elastomers by the reaction injection molding technique. These polyurea elastomers are prepared from a polyisocyanate in which all of the isocyanate groups are aromatically bound, a polyether and a diamine. The polyether has at least two isocyanate-reactive groups and a molecular weight from 1800 to 12,000. At least 50% of the isocyanate- reactive groups in the polyether are primary and/or secondary amino groups. The diamine has a molecular weight from 108 to 400 and primary and/or secondary aromatically bound amino groups. Known auxiliary agents and additives may also be employed.

415537

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