Applications of epoxy succinate and/or epoxy diethyl succinate
A technology of diethyl epoxy succinate and epoxy succinate is applied in the application field of epoxy succinate and/or diethyl epoxy succinate as PVC heat stabilizers, and achieves good application prospects, initial stage The effect of improved whiteness and long-term thermal stability, and easy availability of raw materials
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[0014] Example group 1
[0015] The composition of the test formulations is shown in Table 1. Wherein, the consumption of epoxy succinate and diethyl epoxy succinate is 0.5 parts by weight added to 100 parts by weight of PVC resin.
[0016] Table 1
[0017]
[0018] Put the above mixture on a two-roller plasticizing machine with a roller temperature of 150°C and a roller distance of 1 mm for 3 minutes. After taking the piece, cut it into a 2 cm×2 cm square test piece. According to the requirements of the GB / T 7141-92 standard, the The PVC sheets are grouped in order and placed in the aging oven, and the oven aging test is carried out at 180±1°C. The test pieces are taken out every 10 minutes, and the changes in the color of the test pieces are observed and recorded. The time continues until the test pieces appear black. , the results are shown in Table 2.
[0019] Table 2
[0020]
[0021] It can be seen from Table 2 that compared with formula 1 of the comparative ...
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