| 摘要 |
1. Reactive thermoplastic acrylic prepolymers having a molecular mass in the range 5,000 to 10,000 and being of general formula I see diagramm : EP0002974,P8,F1 wherein each X is hydrogen or methyl, n is an integer from 25 to 50 representing the degree of polymerization, and A is a hydrocarbon group with one double bond between carbon atoms and has the general formula see diagramm : EP0002974,P8,F2 wherein X has the meaning given above, and either Z is - O - CH2 - and Y is H or C6 H5 or see diagramm : EP0002974,P8,F3 and Y is H. |
