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

1995-02-23

1996-05-28

Marquis, Melvyn I.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

525261, 525302, 525309, C08K 322, C08L 3102

Patent

active

055212433

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: 3154600 (1964-10-01), Munn
patent: 3847865 (1974-11-01), Duggins
patent: 4085246 (1978-04-01), Buser et al.
patent: 4183991 (1980-01-01), Smiley et al.
patent: 4267229 (1981-05-01), Knight et al.
patent: 4608291 (1986-08-01), Gove
patent: 4803026 (1989-02-01), Ikeda et al.
patent: 5244941 (1993-09-01), Bruckbauer et al.

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