Cast resin for optical use

Details Cast resin for optical use Cast resin for optical use

1992-10-19

1994-08-09

Szekely, Peter

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526314, 526323, C08F 1818, C08F 1824, C08F22226

Patent

active

053367430

ABSTRACT:
A cast resin for optical use is obtained by polymerizing a diallylphthalate component represented by the formula: ##STR1## wherein --R.sub.1 stands for a hydrogen atom or a methyl group, --OR.sub.2 for a dihydric alcohol residue having 1-5 carbon atoms, and m for an integer of 0-20, with an alkyleneglycol bis-allylcarbonate component represented by the formula: ##STR2## wherein --R.sub.4 stands for a hydrogen atom or a methyl group, --OR.sub.3 for a dihydric alcohol residue having 1-10 carbon atoms, and n for an integer of 1-10. In addition to the above components, there may be added a vinyl compound.

REFERENCES:
patent: 4801667 (1989-01-01), Brand
patent: 4855374 (1989-08-01), Murata et al.

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