| 主权项 |
1. A moisture-curable composition comprising:
(a) a trialkylsilane-terminated sulfur-containing polymer, comprising a trialkylsilane-terminated polythioether comprising:
(A) a backbone comprising a structure having the Formula (1):
—R1—[—S—(CH2)2—O—[—R2—O—]m—(CH2)2—S—R1]n— (1)wherein:
(i) each R1 is independently selected from a C2-10 n-alkanediyl group, a C3-6 branched alkanediyl group, a C6-8 cycloalkanediyl group, a C6-10 alkanecycloalkanediyl group, a heterocyclic group, a —[(—CH2—)p—X—]q—(CH2)r— group, and a —[(—CH2—)p—X—]q—(CH2)r— group in which at least one —CH2— unit is substituted with a methyl group;(ii) each R2 is independently selected from a C2-10 n-alkanediyl group, a C3-6 branched alkanediyl group, a C6-8 cycloalkanediyl group, a C6-14 alkanecycloalkanediyl group, a heterocyclic group, and a —[(—CH2—)p—X—]q—(CH2)r— group;(iii) each X is independently selected from —O—, —S—, and a —NR6— group, in which R6 is selected from hydrogen and a methyl group;(iv) m ranges from 0 to 50;(v) n is an integer ranging from 1 to 60;(vi) p is an integer ranging from 2 to 6;(vii) q is an integer ranging from 1 to 5; and(viii) r is an integer ranging from 2 to 10; and(B) at least two groups, per molecule, of Formula (2): wherein R3, R4, and R5 are each independently selected from a C1-6 n-alkyl group, a C3-6 branched alkyl group, a substituted C1-6 n-alkyl group, and a phenyl group; and (b) a curing agent; and (c) a blocked basic catalyst. |
