US 2003/0215604 A1Published application

Core-shell polymeric compositions

AssigneeWestvaco Corporation

InventorGamini S. Samaranayake

Life of this patent

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Abstract

This invention concerns cationic core-shell particles having a polymeric core component and a polymeric shell component disposed generally about said core, wherein said shell contains a stabilizer that is covalently bonded to the polymeric shell component. More particularly, the invention concerns the use of these core-shell particles in formulating ink jet receptive coatings.

Claims24

Dependent claims

A cationic core-shell particle suitable for use in formulating ink jet receptive coatings comprising:

(A) a polymeric core component, said core component comprising the free radical polymerization reaction product of a mixture comprising:
(1) about 45.0% to about 95.0% by total weight of the mixture of a member selected from the group consisting of acrylic esters of alcohols containing from 1 to 22 carbon atoms, methacrylic esters of alcohols containing from 1 to 22 carbon atoms, styrene, substituted styrenes, acrylonitrile, methacrylonitrile, vinyl chloride, vinylidene chloride, vinyl ethers, vinyl esters, N-vinyl amides, acrylamides, methacrylamides, and combinations thereof;
(2) about 0.5% to about 30.0% by total weight of the mixture of a member selected from the group consisting of ethylenically unsaturated monomers containing at least one quaternary ammonium group and combinations thereof;
(3) about 4.5% to about 35.0% by total weight of the mixture of a member selected from the group consisting of amine-containing ethylenically unsaturated monomers and combinations thereof;
and
(4) a catalytic amount of polymerization initiator;
and
(B) a polymeric shell component disposed generally about said core component, said shell component comprising the free radical polymerization reaction product of a mixture comprising:
(1) about 70.0% to about 99.5.0% by total weight of the mixture of a member selected from the group consisting of acrylic esters of alcohols containing from 1 to 22 carbon atoms, methacrylic esters of alcohols containing from 1 to 22 carbon atoms, styrene, substituted styrenes, acrylonitrile, methacrylonitrile, vinyl chloride, vinylidene chloride, vinyl ethers, vinyl esters, N-vinyl amides, acrylamides, methacrylamides, and combinations thereof;
(2) up to about 30.0% by total weight of the mixture of a member selected from the group consisting of ethylenically unsaturated monomers containing at least one quaternary ammonium group and combinations thereof;
(3) about 0.5% to about 30.0% by total weight of the mixture of stabilizer selected from the group consisting of ultraviolet absorbers which contain at least one ethylenically unsaturated group, radical scavengers which contain at least one ethylenically unsaturated group, antioxidants which contain at least one ethylenically unsaturated group, peroxide decomposers which contain at least one ethylenically unsaturated group, and combinations thereof;
and
(4) a catalytic amount of polymerization initiator;
and wherein said stabilizer is covalently bound to said shell component.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/291,141Filed 8 Nov 2002
Priority: 16 May 2002
Published: 20 Nov 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

B41M 5/52
Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording:…
B41M 5/5218
Macromolecular coatings: characterised by inorganic additives, e.g. pigments, clays
C08F 291/00
Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to
C08F 291/12
Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to more than one of the groups C08F251/00 -…:…

Family

Application10/147,655Continuation in part · filed 16 May 2002
Application10/194,352Continuation in part · filed 12 Jul 2002
Application10/291,141Continuation in part · filed 8 Nov 2002
US 6,521,343 B1Related patent
US 6,572,969 B1Related patent
US 6,767,638 B2Related patent
US 2003/0215604 A1This patent

From the US filing history. Foreign family members aren’t listed.

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Abstract

A cationic core-shell particle suitable for use in formulating ink jet receptive coatings comprising:

(A) a polymeric core component, said core component comprising the free radical polymerization reaction product of a mixture comprising:
(1) about 45.0% to about 95.0% by total weight of the mixture of a member selected from the group consisting of acrylic esters of alcohols containing from 1 to 22 carbon atoms, methacrylic esters of alcohols containing from 1 to 22 carbon atoms, styrene, substituted styrenes, acrylonitrile, methacrylonitrile, vinyl chloride, vinylidene chloride, vinyl ethers, vinyl esters, N-vinyl amides, acrylamides, methacrylamides, and combinations thereof;
(2) about 0.5% to about 30.0% by total weight of the mixture of a member selected from the group consisting of ethylenically unsaturated monomers containing at least one quaternary ammonium group and combinations thereof;
(3) about 4.5% to about 35.0% by total weight of the mixture of a member selected from the group consisting of amine-containing ethylenically unsaturated monomers and combinations thereof;
and
(4) a catalytic amount of polymerization initiator;
and
(B) a polymeric shell component disposed generally about said core component, said shell component comprising the free radical polymerization reaction product of a mixture comprising:
(1) about 70.0% to about 99.5.0% by total weight of the mixture of a member selected from the group consisting of acrylic esters of alcohols containing from 1 to 22 carbon atoms, methacrylic esters of alcohols containing from 1 to 22 carbon atoms, styrene, substituted styrenes, acrylonitrile, methacrylonitrile, vinyl chloride, vinylidene chloride, vinyl ethers, vinyl esters, N-vinyl amides, acrylamides, methacrylamides, and combinations thereof;
(2) up to about 30.0% by total weight of the mixture of a member selected from the group consisting of ethylenically unsaturated monomers containing at least one quaternary ammonium group and combinations thereof;
(3) about 0.5% to about 30.0% by total weight of the mixture of stabilizer selected from the group consisting of ultraviolet absorbers which contain at least one ethylenically unsaturated group, radical scavengers which contain at least one ethylenically unsaturated group, antioxidants which contain at least one ethylenically unsaturated group, peroxide decomposers which contain at least one ethylenically unsaturated group, and combinations thereof;
and
(4) a catalytic amount of polymerization initiator;
and wherein said stabilizer is covalently bound to said shell component.

11 more elements

Facts

Application

10/291,141Filed 8 Nov 2002

Priority

16 May 2002

Published

20 Nov 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification20 codes

B41M 5/52
Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording:…
B41M 5/5218
Macromolecular coatings: characterised by inorganic additives, e.g. pigments, clays
C08F 291/00
Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to
C08F 291/12
Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to more than one of the groups C08F251/00 -…:…

Family

Application10/147,655Continuation in part · filed 16 May 2002

Application10/194,352Continuation in part · filed 12 Jul 2002

Application10/291,141Continuation in part · filed 8 Nov 2002

US 6,521,343 B1Related patent

US 6,572,969 B1Related patent

US 6,767,638 B2Related patent

US 2003/0215604 A1This patent

From the US filing history. Foreign family members aren’t listed.