Title: Research on the synthesis of UV curing alicyclic polyurethane acrylate prepolymer
Abstract: Tetra-functional UV curing PUA prepolymer was prepared from aliphatic isosporone diisocyanate(IPDI),pentaerythritol(PETL)and hydroxyethyl acrylate(HEA).The effect of catalyst amount,raw material ratio,reaction temperature and time on the synthetic reaction was investigated.The optimum conditions were as follows: dibutytin dilaurate used as catalyst and the amount of catalyst used in the first step was 0.05%~0.08%(wt) of the total of isosporone disocyanate and hydroxyethyl acrylate,4-methoxyphenol used as inhibitor and the amount was 1% of all reactants,reaction temperature in the first step was 55~75 ℃,reaction time was 2 h reaction temperature was 65~70 ℃,2~2.5 h in the second step,the molar ratio n(PETL): n(IPDI): n(HEA)=1:4:4.12.
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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