Styrene resin composition and method of producing molding thereo

Details Styrene resin composition and method of producing molding thereo Styrene resin composition and method of producing molding thereo

1993-04-30

1995-04-18

Szekely, Peter A.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525226, 525228, 525240, 525241, 525305, 525308, 525309, C08L 3306, C08L 3506, C08L 2506, C08L 2514

Patent

active

054080037

ABSTRACT:
A styrene resin composition comprising a crosslinked styrene resin and uniformly dispersed therein an uncrosslinked resin capable of being extracted with an organic solvent, the amount of the uncrosslinked resin being from 3 to 50% by weight based on the total amount of the composition; and a method of producing a molding of a styrene resin composition, which method comprises the step of subjecting to cast polymerization a liquid mixture comprising: (a) a styrene monomer in an amount of 30% by weight or more based on the total amount of the ingredients (a), (b), and (c); (b) a monofunctional monomer having one radical-polymerizable double bond in the molecule, in an amount less than 70% by weight based on the total amount of the ingredients (a), (b), and (c); (c) a polyfunctional monomer having at least two radical-polymerizable double bonds in the molecule, in an amount of from 0.01 to 40% by weight based on the total amount of the ingredients (a), (b), and (c); (d) a resin component soluble in a mixture of the ingredients (a), (b), and (c), in an amount of from 3 to 100 parts by weight per 100 parts by weight of the total amount of the ingredients (a), (b), and (c); and (e) a free-radical polymerization initiator in an amount of from 0.001 to 5 parts by weight per 100 parts by weight of the total amount of the ingredients (a), (b), (c), and (d).

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patent: 4312725 (1982-01-01), Loshaek et al.
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Encyclopedia of Polymer Science and Engineering, vol. 16, p. 26, John Wiley & Sons.
JP-A-56-167706 Abstract.
JP-A-61-223701 Abstract.
JP-A-62-187712 Abstract.

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