Preparation of thermoformable methyl methacrylate sheets

Details Preparation of thermoformable methyl methacrylate sheets Preparation of thermoformable methyl methacrylate sheets

1978-04-26

1979-05-01

Wong, Jr., Harry

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 73, 526 78, 526 89, 526193, 526206, 5263232, 5263285, 5263297, C08F 238, C08F 2014

Patent

active

041525060

ABSTRACT:
In casting methacrylate sheets for thermoforming applications, it has heretofore been the practice to add chain transfer agents to the polymerization mix for forming syrup. It has now been found that addition of chain transfer agent can be delayed until after the syrup has been prepared with no loss in thermoformability of sheets prepared from the syrup.

REFERENCES:
patent: 3362942 (1968-01-01), Munn
patent: 3380980 (1968-04-01), Calkins et al.

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