Emulsion graft copolymers
First Claim
1. An emulsion graft copolymer composed ofa) 2-10% by weight of a core composed of80-99.99% by weight of methyl methacrylate (I),0.01-5% by weight of allyl methacrylate (II),0-19.99% by weight of other monofunctional comonomers (III), which are ethylenically unsaturated monomers and0-3% by weight of other di- or polyfunctional comonomers (IV) which are ethylenically unsaturated monomers,b) 15-50% by weight of a first shell composed of60-89.99% by weight of a C1 -C20 -alkyl acrylate (V),10-39.99% by weight of a vinylaromatic monomer (VI),0.01-5% by weight of II,0-10% by weight of I and/or III,0-3% by weight of IV,c) 5-20% by weight of a second shell with a composition as indicated under (a),d) 15-50% by weight of a third shell with a composition as indicated under (b),e) 15-30% by weight of a fourth shell composed of80-99.95% by weight of I,0.05-2% by weight of a regulator (VII) and0-19.95% by weight of III,with the proviso that the total of the contents of the shells (b) and (d) is 50-75% by weight.
3 Assignments
0 Petitions
Accused Products
Abstract
Emulsion graft copolymers composed of
a) 2-10% by weight of a core composed of
80-99.99% by weight of methyl methacrylate (I),
0.01-5% by weight of allyl methacrylate (II),
0-19.99% by weight of other monofunctional comonomers (III) and
0-3% by weight of other di- or polyfunctional comonomers (IV),
b) 15-50% by weight of a first shell composed of
60-89.99% by weight of a C1 -C20 -alkyl acrylate (V),
10-39.99% by weight of a vinylaromatic monomer (VI),
0.01-5% by weight of II,
0-10% by weight of I and/or III,
0-3% by weight of IV,
c) 5-20% by weight of a second shell with a composition as indicated under (a),
d) 15-50% by weight of a third shell with a composition as indicated under (b),
e) 15-30% by weight of a fourth shell composed of
80-99.95% by weight of I,
0.05-2% by weight of a regulator (VII) and
0-19.95% by weight of III,
are suitable as additives to increase the impact strength of thermoplastic compositions.
20 Citations
1 Claim
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1. An emulsion graft copolymer composed of
a) 2-10% by weight of a core composed of 80-99.99% by weight of methyl methacrylate (I), 0.01-5% by weight of allyl methacrylate (II), 0-19.99% by weight of other monofunctional comonomers (III), which are ethylenically unsaturated monomers and 0-3% by weight of other di- or polyfunctional comonomers (IV) which are ethylenically unsaturated monomers, b) 15-50% by weight of a first shell composed of 60-89.99% by weight of a C1 -C20 -alkyl acrylate (V), 10-39.99% by weight of a vinylaromatic monomer (VI), 0.01-5% by weight of II, 0-10% by weight of I and/or III, 0-3% by weight of IV, c) 5-20% by weight of a second shell with a composition as indicated under (a), d) 15-50% by weight of a third shell with a composition as indicated under (b), e) 15-30% by weight of a fourth shell composed of 80-99.95% by weight of I, 0.05-2% by weight of a regulator (VII) and 0-19.95% by weight of III, with the proviso that the total of the contents of the shells (b) and (d) is 50-75% by weight.
Specification
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- Resources
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Current AssigneeQuinn Plastics GmbH (Schweiter Technologies AG)
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Original AssigneeBASF AG (BASF SE)
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InventorsSchoen, Wilfried, Wagner, Daniel, Besecke, Siegmund, Endlich, Karl-Ludwig
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Primary Examiner(s)Jagannathan, Vasu S.
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Application NumberUS07/876,780Time in Patent Office656 DaysField of Search525/307, 525/309US Class Current525/307CPC Class CodesC08F 220/14 Methyl esters , e.g. methyl...C08F 285/00 Macromolecular compounds ob...
