| 摘要 |
<p>Polymers (I) of a) 99.9-85 wt.% of at least one copolymerisable monomer (II) of formula D.CH:C(B)A b) 0.1-15 wt.% of at least one copolymerisable acetoacetate (III) of formula CH3COCH2COOR1-OOCC(R):CH2 or CH3COCH2COOR2C(R3):CH2 A=H or Me; B=H, Me, aryl, CN, halogen, or -OOC alkyl; D=H, Me, or -OOC alkyl; R=H or Me; R1=1-6C alkylene; R2=single bond or 1-4C alkylene; and R3=H, Me, or -CH2OOCCH2COCH3. Copolymerisation of at least one (II) with at least one (III) in above-specified wt. ratio is claimed. Pref. (II) is mixt. of at least 2 of styrene, alpha-methylstyrene, acrylonitRILE, OR Me methacrylate, partic. contg. up to 35, esp. 10-30 wt.% acrylonitrile.</p> |
