| 摘要 |
<p>Various ethylenically unsaturated monomers can be graft copolymerized onto lactone polyesters, such as, homo-polymers of epsilon -caprolactone or copolymers of epsilon -caprolactone and epsilon -alkyl- epsilon -caprolactones at temperatures between 90 DEG and 150 DEG C. Preferred vinyl monomers include acrylic acid, methacrylic acid, acrylic and methacrylic acid alkyl esters, styrene, vinyl halides, vinylidene halides, alkali metal ar-(methacryloxyethoxy) or -(acryloxyethoxy) benzene sulfonates, alkali metal benzene sulfonates, N-methyl-N-vinyl acetamide, dialkylaminoalkyl acrylic and methacrylic acid esters, vinyl pyridines, acrylonitrile, and vinyl esters of aliphatic acids.</p> |
