Trithiocarbonate-containing addition-fragmentation agents

摘要

The present disclosure provides addition-fragmentation oligomers of the general formula: The crosslinking oligomers of this disclosure provide stress relief by including labile crosslinks that can cleave and reform during the polymerization process.;

主权项

1. An addition fragmentation agent of the formula: wherein RA is a (hetero)hydrocarbyl group; RB is each independently a (hetero)hydrocarbyl group; RC is each independently a (hetero)hydrocarbyl group; Subscript a is 0 to 60; Z comprises an ethylenically unsaturated polymerizable group; wherein RA, RB and RC are each independently alkylene of 2 to 10 carbon atoms; and wherein Z—RC— is selected from H2C═CH—CH2—O—C3H6—, H2C═CH—CH2—C6H12—, H2C═CH-cyclo-C6H10—, H2C═C(CH3)C(O)—O—CH2—CH(OH)—CH2—, H2C═C(CH3)C(O)—O—CH2—CH(O—(O)C(CH3)═CH2)—CH2—, H2C═C(CH3)C(O)—O—CH(CH2OPh)-CH2—, H2C═C(CH3)C(O)—O—CH2CH2—N(H)—C(O)—O—CH(CH2OPh)-CH2—, H2C═C(CH3)C(O)—O—CH2—CH(O—(O)C—N(H)—CH2CH2—O—(O)C(CH3)C═CH2)—CH2—, H2C═C(H)C(O)—O—(CH2)4—O—CH2—CH(OH)—CH2—, H2C═C(CH3)C(O)—O—CH2—CH(O—(O)C—N(H)—CH2CH2—O—(O)C(CH3)C═CH2)—CH2—, CH3—(CH2)7—CH(O—(O)C—N(H)—CH2CH2—O—(O)C(CH3)C═CH2)—CH2—, H2C═C(H)C(O)—O—(CH2)4—O—CH2—CH(—O—(O)C(H)═CH2—CH2— and H2C═C(H)C(O)—O—CH2—CH(OH)—CH2—, H2C═C(H)C(O)—O—(CH2)4—O—CH2—CH(—O—(O)C(H)═CH2)—CH2—, and CH3—(CH2)7—CH(O—(O)C—N(H)—CH2CH2—O—(O)C(CH3)C═CH2)—CH2.