25-02-2021 дата публикации
Номер: US20210054203A1
Принадлежит:
The invention relates to curable compositions based on curable polymers containing a special capped adhesion promoter, and optionally a curing catalyst. These compositions have improved adhesion properties and excellent storage stability. The invention also relates to the uses thereof. 1. A curable composition comprising(A) at least one curable polymer; {'br': None, 'sup': 11', '12', '13, 'sub': q', '3-q, 'B—R—SiR(OR)\u2003\u2003(I)'}, '(B) at least one capped adhesion promoter of formula (I) [{'sup': '11', 'Ris a linear or branched alkylene group, optionally interrupted by a heteroatom;'}, {'sup': '12', 'each Ris independently selected from the group consisting of hydrogen, halogen, amino, a substituted or unsubstituted alkyl, alkenyl, alkynyl, cycloaliphatic, aryl, heteroaryl, and heteroalicyclic group or a combination thereof;'}, {'sup': '13', 'each Ris independently selected from the group consisting of a substituted or unsubstituted alkyl, alkenyl, alkynyl, or acyl group;'}, {'sup': '14', 'each Ris independently selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloaliphatic, aryl, heteroaryl, and heteroalicyclic group or a combination thereof;'}, 'q independently stands for 0, 1, or 2; and', {'br': None, 'sup': 15', '16, '—NRR\u2003\u2003(1)'}, 'B is a nitrogen-containing group of formula (1)'}], 'wherein'} [{'sup': 15', '17, 'sub': '3', 'Ris selected from —Si(R);'}, {'sup': 16', '17, 'sub': '3', 'Ris selected from —Si(R), hydrogen, a substituted or unsubstituted alkyl, alkenyl, alkynyl, cycloaliphatic, aryl, heteroaryl, and heteroalicyclic group or a combination thereof; and'}, {'sup': '17', 'each Ris independently selected from hydrogen, a substituted or unsubstituted alkyl, alkenyl, alkynyl, cycloaliphatic, or aryl group or a combination thereof; or'}, {'sup': 15', '16', '17', '18', '17', '18, 'sub': 2', '2, 'wherein Rand Rcombine to form together with the nitrogen atom to which they are attached a group of formula —Si(R)—R—Si(R)—, ...
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