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High-efficiency perfume capsules

  • US 8,759,275 B2
  • Filed: 11/04/2010
  • Issued: 06/24/2014
  • Est. Priority Date: 11/06/2009
  • Status: Active Grant
First Claim
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1. An encapsulate comprising a core which comprises perfume, a wall having an outer surface and a coating, said wall comprising melamine formaldehyde and encapsulating said core, said coating surrounding the outer surface of said wall, said coating comprising an efficiency polymer which is a polyvinyl formamide, said efficiency polymer having an average molecular mass from about 10,000 Da to about 50,000,000 Da;

  • a hydrolysis degree, of from about 5% to about 40%; and

    /or a charge density from about 1 meq/g efficiency polymer to about 23 meq/g efficiency polymer.

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