Process for the production of thermoformed articles by polymeriz

Details Process for the production of thermoformed articles by polymeriz Process for the production of thermoformed articles by polymeriz

1990-09-10

1992-12-22

Page, Thurman K.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5262321, 5262322, 5262325, 526232, 264 27, 264322, C08F 432, C08F 2600, B29D 1100

Patent

active

051735520

ABSTRACT:
Optical articles are obtained by polymerizing, in the form of a flat plate, by means of a free-radical initiator, a polymerizable liquid composition containing diethylene glycol bis(allyl carbonate), tris-hydroxyethylisocyanate tris(allyl-carbonate) and vinyl acetate and/or methyl methacrylate and then submitting the so-obtained plate to thermoforming.

REFERENCES:
patent: 3658801 (1972-04-01), Berry et al.
patent: 4373076 (1983-02-01), Tarumi et al.
patent: 4521577 (1985-06-01), Romano et al.

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