Thioxanthone photoinitiator was synthesized from DTSA by chlorination and condensation with isopropylbenzene in the presence of anhydrous AlCl3.
以二硫
二苯甲酸(DTSA)经过酰
、
、
后与异丙苯在三氧
铝催
下缩合
为光引发剂。
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We still see high rates of autoimmune disease in countries where there are higher levels of sanitation, there's more washing, there's more chlorination, there are more chemicals, there are fewer microbes compared to less developed countries.
我们依然发现,在那些卫生条件更好、洗涤更频繁、氯
处理更多、
学物质更丰富、微生物相对较少
发达国家,自身免疫性疾病
发病率较高,相比之下,在卫生条件较差
发展中国家,这一现象则不那么明显。