Polymerizable lactamic copolymers suitable for the formation of coatings on microencapsulated particles

Patent metadata

Field	Value
Publication number	US-9757704-B2
Application number	US-201013518255-A
Country	US
Kind code	B2
Filing date	Dec 22, 2010
Priority date	Dec 22, 2009
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

This present application relates to microcapsules or compositions containing microcapsules wherein the microcapsules comprise a polymerizable lactamic copolymer. More particularly, certain aspects are directed to the use of polymerizable lactamic copolymers in the formation of coatings on microencapsulated particles. These polymerizable lactamic copolymers can result in surface modified microencapsulated particles that may be anionic, non-ionic, or cationic.

First claim

What is claimed:

1. A microencapsulated particle comprising a coating, the coating comprising a lactamic polymerizable copolymer wherein the lactamic polymerizable copolymer consists of N-vinyl caprolactam, 2-phenoxy ethyl acrylate, 2-hydroxy ethyl acrylate VCap-PEA-HEA) and, optionally, acrylic anhydride.

2. A microencapsulated particle in accordance with claim 1 wherein the lactamic polymerizable copolymer is polymerized to the surface of the particle.

3. A microencapsulated particle in accordance with claim 2 wherein the lactamic polymerizable copolymer is polymerized through at least one process selected from the group consisting of thermal polymerization, cationic polymerization, anionic polymerization, free-radical polymerization and combinations thereof.

4. A microencapsulated particle in accordance with claim 1 wherein the lactamic polymerizable copolymer renders a cationic, non-ionic or anionic surface charge to the particle.

5. A microencapsulated particle in accordance with claim 1 wherein the microencapsulated particle comprises a core material at least partially encapsulated by a wall material.

6. A microencapsulated particle in accordance with claim 5 wherein the core material comprises at least one material selected from the group consisting of a fragrance, an oil, an agricultural active, a biocide, a pharmaceutically active material, a sunscreen, a UV absorber, a UV curable adhesive, a lubricant, an abrasive, a wax, a water soluble molecule, a pigment, a colorant, a peroxide, a water sensitive inorganic chemical, an oil field chemical, and a vitamin.

7. A microencapsulated particle in accordance with claim 1 wherein the lactamic polymerizable copolymer consisting of about 5 to 95 wt. % of VCap.

Assignees

• Hood David K
• Visscher Karyn B
• Kamin Surya
• Isp Investments Llc

Inventors

• Hood David K
• Visscher Karyn B
• Kamin Surya

Classifications

• C10M2209/062

  Vinyl esters of saturated carboxylic or carbonic acids, e.g. vinyl acetate · CPC title

• Y10T428/2998

  including synthetic resin or polymer · CPC title

• C09B67/0097

  Dye preparations of special physical nature; Tablets, films, extrusion, microcapsules, sheets, pads, bags with dyes · CPC title

• C11D3/505

  encapsulated or adsorbed on a carrier, e.g. zeolite or clay · CPC title

• B01J13/14 Primary

  Polymerisation; cross-linking · CPC title