TITLE: ACRYLIC-FILLED THERMOFORMABLE ACRYLIC SHEET.
European Patent Application EP0497968 A1

ABSTRACT:
Abstract not available for EP0497968
Abstract of corresponding document: US5242968
A monomer-rich acrylic syrup is cast including about 10% to about 20%
ground acrylic particles. During curing, the particles absorb over half
their weight in monomer, and a cured sheet is formed in which the
matrix monomer and uncrosslinked polymer form a phase which extends
through the particles, while the particles appear to be fused together.
Including a crosslinker in the syrup further insures the
interpenetration of the matrix phase into the swollen particles. A
textured surface is formed, which is useful as an anti-slip surface in
bathtubs and shower stalls, after thermoforming.

INVENTORS:
Minghetti, Ettore (US)
Eitel, John E. (US)

APPLICATION NUMBER: EP19910917452
PUBLICATION DATE: 08/12/1992
FILING DATE: 06/24/1991

ASSIGNEE: ARISTECH CHEMICAL CORP (US)
INTERNATIONAL CLASSES: B29C39/02; B29C51/00; C08F20/18; C08F220/10; C08F265/06; C08J5/18;
C08K3/00; C08L33/04; C08L33/12; (IPC1-7): B32B27/30; C08K3/18;
C08K3/26; C08K3/36; C08L33/12
EUROPEAN CLASSES: B29C39/02C; B29C51/00B; C08F265/06+2/02

FOREIGN REFERENCES:
4282140 Acrylic cement applicable in bone surgery and in stomatology
4159301 Simulated granite and its preparation
4413089 Use of iron oxide pigments in a polymethyl methacrylate article

OTHER REFERENCES:
Kunststoffhandbuch, vol.IX,1975, 4.1.0.1.
Kunststoffhandbuch, vol.IX,1975, p.151,lines 1-4.
See also references of WO 9203497A1