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US4849051A Heat resistant positive resists and method for preparing heat-resistant relief structures 失效
耐热正性抗蚀剂和制备耐热浮雕结构的方法

Heat resistant positive resists and method for preparing heat-resistant
relief structures
摘要:
The invention provides heat-resistant positive resists and methods for preparing heat-resistant relief structures therefrom. The positive resists are based upon polybenzoxazole precursor stages and diazoquinones. The polybenzoxazole precursor stages are hydroxypolyamides with the following structure: ##STR1## where R, R*, R.sub.1 and R.sub.1 * are aromatic groups; n.sub.1 and n.sub.2 =1 to 100; and R.noteq.R* and/or R.sub.1 .noteq.R.sub.1 *.
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