Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1980-08-19
1983-08-09
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
428411, 428413, 4284744, 525430, 525445, 528 25, 528 99, 528112, 528113, 528125, 528128, 528289, 528297, C08G 6540
Patent
active
043980090
ABSTRACT:
The invention relates to oligomeric and/or polymeric precursor stages of polyoxazoles, as well as to a method for the preparation of these precursor stages. New radiation-reactive polymer precursor stages are provided comprised of addition products of olefinically unsaturated monoepoxides on hydroxyl group-containing polycondensation products of aromatic and/or heterocyclic dihydroxy diamino compounds with dicarboxylic-acid chlorides or esters. The radiation-reactive precursor stages according to the invention are suitable, for example, for the preparation of highly heat-resistant relief structures and as coatings for the optical fibers of light waveguides.
REFERENCES:
patent: 3957512 (1976-05-01), Kleeberg et al.
Ahne Hellmut
Kuhn Eberhard
Rubner Roland
Anderson Harold D.
Siemens Aktiengesellschaft
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