Patent ID: 9656443
Date: 2017-05-23
CPC Classifications: B32B,C08G,Y10T

Claim:
1. A stable solution of a ring-opened polymer, which is in a state to be used as a self-crosslinkable resin or a hardener for an epoxy resin and is prepared using the following steps: (a) adding an N,O-heterocyclic compound of formula I or II and a DOPO-based compound into an organic solvent to provide a reaction solution: wherein R1 is selected from the group consisting of a substituted or unsubstituted C1-C10 alkyl, a substituted or unsubstituted C3-C10 cycloalkyl, a substituted or unsubstituted C6-C20 aryl, a substituted or unsubstituted C6-C20 aryloxy, a substituted or unsubstituted C2 to C15 unsaturated hydrocarbyl, a naphthol group, a phenanthrenol group and a dicyclopentadienyl; R2 and R3 are independently selected from the group consisting of H, a halogen, a substituted or unsubstituted C1-C10 alkyl, a substituted or unsubstituted C3-C10 cycloalkyl, a substituted or unsubstituted C6-C20 aryl, a substituted or unsubstituted C6-C20 aryloxy, a substituted or unsubstituted C2 to C15 unsaturated hydrocarbyl, a naphthol group, a phenanthrenol group and a dicyclopentadienyl; W1 is selected from the group consisting of H, a halogen, an ether group, a thioether group, a sulfonyl, a sulfinyl, a carbonyl, a substituted or unsubstituted C1-C10 alkyl, a substituted or unsubstituted C3-C10 cycloalkyl, a substituted or unsubstituted C6-C20 aryl, a substituted or unsubstituted C6-C20 aryloxy, a substituted or unsubstituted C2 to C15 unsaturated hydrocarbyl, a naphthol group, a phenanthrenol group and a dicyclopentadienyl; W2 is selected from the group consisting of a substituted or unsubstituted C1-C10 alkyl, a substituted or unsubstituted C3-C10 cycloalkyl, a substituted or unsubstituted C6-C20 aryl, a substituted or unsubstituted C6-C20 aryloxy, a substituted or unsubstituted C2 to C15 unsaturated hydrocarbyl, a naphthol group, a phenanthrenol group and a dicyclopentadienyl; m and n are independently integers ranging from 1 to 3; p is an integer ranging from 1 to 3; and q is an integer ranging from 1 to 4; (b) heating the reaction solution to carry out a ring-opening polymerization to provide a polymer solution; and (c) cooling the polymer solution to substantially terminate the ring-opening polymerization to obtain the stable solution, wherein the organic solvent is unreactive to the N,O-heterocyclic compound and the DOPO-based compound, and the amount of the DOPO-based compound is about 0.01 wt % to about 50 wt % based on the total weight of the N,O-heterocyclic compound and the DOPO-based compound, and wherein the DOPO-based compound is selected from the group consisting of: and combinations thereof.