摘要:
A polythioether includes a structure having the formula I —R1—[—S—(CH2)2—O—[—R2—O—]m—(CH2)2—S—R1—]n— I wherein R1 denotes a divalent C2-6 n-alkyl, C3-6 branched alkyl, C6-8 cycloalkyl or C6-10 alkylcycloalkyl group, —[(—CH2—)p—X—]q—(—CH2—)r—, or —[(—CH2—)p—X—]q—(—CH2—)r— in which at least one —CH2— unit is substituted with a methyl group, R2 denotes methylene, a divalent C2-6 n-alkyl, C2-6 branched alkyl, C6-8 cycloalkyl or C6-10 alkylcycloalkyl group, or —[(—CH2—)p—X—]q—(—CH2—)r—, X denotes one selected from the group consisting of O, S and —NR6, R6 denotes H or methyl, m is a rational number from 0 to 10, n is an integer from 1 to 60, p is an integer from 2 to 6, q is an integer from 0 to 5, and r is an integer from 2 to 10. The polythioether is a liquid at room temperature and pressure.
摘要:
A polythioether includes a structure having the formula I —R1—[—S—(CH2)2—O—[—R2—O—]m—(CH2)2—S—R1—]n— I wherein R1 denotes a C2-6 n-alkylene, C3-6 branched alkylene, C6-8cycloalkylene or C6-10 alkylcycloalkylene group, —[(—CH2—)p—X—]q—(—CH2—)r—, or —[(—CH2—)p—X—]q—(—CH2—)r— in which at least one —CH2— unit is substituted with a methyl group, R2 denotes a C2-6 n-alkylene, C2-6 branched alkylene, C6-8 cycloalkylene or C6-10 alkylcycloalkylene group, or —[(—CH2—)p—X—]q—(—CH2—)r—, X denotes one selected from the group consisting of O, S and —NR6, R6 denotes H or methyl, m is a rational number from 0 to 10, n is an integer from 1 to 60, p is an integer from 2 to 6, q is an integer from 0 to 5, and r is an integer from 2 to 10. The polythioether is a liquid at room temperature and pressure.
摘要:
A polythioether includes a structure having the formula I--R.sup.1 --�--S--(CH.sub.2).sub.2 --O--�--R.sup.2 --O--!.sub.m --(CH.sub.2).sub.2 --S--R.sup.1 --!.sub.n --whereinR.sup.1 denotes a divalent C.sub.2-6 n-alkyl, C.sub.3-6 branched alkyl, C.sub.6-8 cycloalkyl or C.sub.6-10 alkylcycloalkyl group, --�(--CH.sub.2 --).sub.p --X--!.sub.q --(--CH.sub.2 --).sub.r --, or --�(--CH.sub.2 --).sub.p --X--!.sub.q --(--CH.sub.2 --).sub.r -- in which at least one --CH.sub.2 -- unit is substituted with a methyl group,R.sup.2 denotes methylene, a divalent C.sub.2-6 n-alkyl, C.sub.2-6 branched alkyl, C.sub.6-8 cycloalkyl or C.sub.6-10 alkylcycloalkyl group, --�(--CH.sub.2 --).sub.p --X--!.sub.q --(--CH.sub.2 --).sub.r --, or --�(--CH.sub.2 --).sub.p --X--!.sub.q --(--CH.sub.2 --).sub.r -- in which at least one --CH.sub.2 -- unit is substituted with a methyl group,X denotes one selected from the group consisting of O, S and --NR.sup.6,R.sup.6 denotes H or methyl,m is a rational number from 0 to 10,n is an integer from 1 to 60,p is an integer from 2 to 6,q is an integer from 0 to 5, andr is an integer from 2 to 10.The polythioether is a liquid at room temperature and pressure.
摘要:
A polythioether has the formulaR.sup.1 --�--R.sup.2 --S--CH(CH.sub.3)--S--!.sub.n --R.sup.2 --R.sup.1whereinR.sup.1 denotes a thiol group, a hydroxyl group, an unsubstituted amine group, a monoalkyl-substituted amine group, a monovalent radical substituted with at least one hydroxyl group, unsubstituted amine group or monoalkyl-substituted amine group, or a group that is non-reactive in the presence of an acid catalyst,R.sup.2 denotes a divalent radical, andn is an integer from 1 to 60.The polythioether is a liquid at room temperature and pressure.