| 摘要 |
The present invention provides a polysulfide polyether having in a main chain: (i) a polyether moiety represented by -(R1O)-n, wherein R1 is an alkylene group having 2-4 carbon atoms, and n is an integer of 6-200; (ii) structural units represented by -(C2H4OCH20COC2H4-Sx)-, and -(CH2CH (OH) CH2-Sx)-, wherein x is an integer of 1-5; and at both ends (iii) a thiol group represented by -C2H4O CH2O C2H4-SH, and/or -CH2CH (OH) CH2-SH, processes for their preparation, and curable compositions. |
