C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/32 (2006.01) C08G 18/50 (2006.01) C08G 18/65 (2006.01) C08G 18/66 (2006.01) C08G 18/75 (2006.01)
Patent
CA 2159878
This invention relates to a one-step process for preparing polyurea elastomers comprising reaction at an isocyanate index of from 90 to 200 of (a) one or more aliphatic and/or cycloaliphatic diisocyanates; (b) 25 to 70 equivalent percent, relative to the total of components (b) and (c), of one or more liquid amine-terminated polymers containing at least two aromatically bound isocyanate-reactive primary or secondary amino groups and/or aliphatically bound isocyanate-reactive secondary amino groups and having a molecular weight of from 400 to 6000; and (c) 75 to 30 equivalent percent, relative to the total of components (b) and (c), of one or more aromatic diamine chain extenders having a molecular weight of from 108 to 399, optionally in admixture with one or more crosslinkers.
Adkins Rick L.
Haider Karl W.
Markusch Peter H.
Rosthauser James W.
Slack William E.
Corporation Bayer
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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