The terminal radicals of the compounds of formula B1 are according to {TAIL ~ the definitions} of R2 and R3 and if X represents COO or CONR5 , the acyl radicals of acrylic or methacrylic acid or the monoacyl radicals of maleic, fumaric or itaconic acid, or if monoalkyl esters of these acids with straight or branched chain alkanols of 1 to 10 carbon atoms, such as methanol, {HEAD ~ ethanol}, butanol, diisobutyl alcohol or decanol, of if X represents oxygen, the vinyloxy radical of vinyl ethers 
The terminal radicals of the compounds of formula B1 are according to { TAIL ~ the definitions } of R2 and R3 and if X represents COO or CONR5 , the acyl radicals of acrylic or methacrylic acid or the monoacyl radicals of maleic , fumaric or itaconic acid , or if monoalkyl esters of these acids with straight or branched chain alkanols of 1 to 10 carbon atoms , such as methanol , { HEAD ~ ethanol } , butanol , diisobutyl alcohol or decanol , of if X represents oxygen , the vinyloxy radical of vinyl ethers
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH