申请人:The United States of America as represented by the Secretary of the Air
公开号:US04366323A1
公开(公告)日:1982-12-28
This invention is directed to the preparation of certain arylene bis-silanols in highly purified form and to the preparation of five new arylene bis-silanols in particular, along with a procedure for polymerizing these and other arylene-type bis-silanols using phosgene as a polymerization promotor or catalyst, to obtain highly purified, high molecular weight arylene-siloxanylene polymers having the characteristic structure: ##STR1## where Y is an arylene or substituted arylene moiety; R and R' are the same or different alkyl group(s), substituted alkyl group(s) or a phenyl group, x ranges from about 1 to 3 and n ranges from about 300 to 1500; said polymers having molecular weights (number average) of 100,000 and higher. Preferred polymers are those arylenesiloxanylenecarbonate polymers which, when laminated to polycarbonate sheets or glass maintain their transparency, stability and adherence to said substrates at temperatures of up to and including 400.degree. F. Such polymers are useful for the formulation of high temperature interlayers for windshields and canopies for aircraft and related aerospace vehicles.
本发明涉及制备某些高度纯净的芳基双硅醇以及制备五种新的芳基双硅醇的方法,以及使用光气作为聚合促进剂或催化剂聚合这些和其他芳基双硅醇的程序,以获得具有特征结构的高度纯净、高分子量的芳基-硅氧烷聚合物:##STR1## 其中Y是芳基或取代芳基基团;R和R'是相同或不同的烷基、取代烷基或苯基,x范围从约1到3,n范围从约300到1500;所述聚合物的分子量(数均值)为100,000及以上。优选的聚合物是芳基硅氧烷碳酸酯聚合物,当层压到聚碳酸酯板或玻璃上时,在高达400°F的温度下保持其透明度、稳定性和与所述基板的粘附性。这种聚合物对于制备飞机和相关航空航天器的挡风玻璃和舱盖的高温中层材料的配方非常有用。