Acrylic sheet having uniform distribution of coloring and minera

Details Acrylic sheet having uniform distribution of coloring and minera Acrylic sheet having uniform distribution of coloring and minera

1996-03-22

1996-10-22

Marquis, Melvyn I.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524437, 525261, 525302, 525309, C08F26506

Patent

active

055677452

ABSTRACT:
Ranges of chain-transfer agents, thixotropic agents, and alumina trihydrate content are balanced to minimize migration or maldistribution of coloring matter and alumina trihydrate during curing of methyl methacrylate in a syrup including polymethylmethacrylate and also during subsequent heating and deformation in thermoforming, to achieve constancy of impact resistance and improve stability of patterns even in deformed portions of formed sheets.

REFERENCES:
patent: 4085246 (1978-04-01), Buser et al.
patent: 5521243 (1996-05-01), Minghetti et al.

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