US 9,217,080 B2Granted

Microcapsules

AssigneeBASF SE

InventorsMarc Rudolf Jung, Hans-Peter Hentze, Rainer Dyllick-Brenzinger, Dieter Niederberger, Hans Willax

Life of this patent

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Abstract

The present invention concerns microcapsules comprising a capsule core and a capsule wall, the capsule wall being constructed from 30% to 90% by weight of one or more C1-C24-alkyl esters of acrylic and/ or methacrylic acid, acrylic acid, methacrylic acid and/or maleic acid (monomers I), 10% to 70% by weight of a mixture of divinyl and polyvinyl monomers (monomers II), the fraction of polyvinyl monomers being in the range from 2% to 90% by weight based on the monomers II, and also 0% to 30% by weight of one or more miscellaneous monomers (monomer III), all based on the total weight of the monomers, a process for their production and their use in textiles, bindered building materials and heat transfer fluids.

Claims18

Dependent claims

Microcapsules comprising a capsule core and a capsule wall, wherein the capsule wall is formed from at least one polymer comprising:

(A) 60% to 90% by weight of one or more C1-C24-alkyl esters of acrylic and/or methacrylic acid, acrylic acid, and/or methacrylic acid and/or maleic acid as monomer I,
(B) 10% to 40% by weight of a mixture of divinyl and polyvinyl monomers as monomer II, wherein a fraction of the polyvinyl monomers is in the range from 2% to 90% by weight based on the monomers II, and
(C) 0% to 30% by weight of one or more additional monomers other than monomers I and II, as monomer III,
wherein the divinyl monomer is at least one diester of a diol with acrylic acid and/or methacrylic acid and the polyvinyl monomer is at least one polyester of a polyol with acrylic acid and/or methacrylic acid,
wherein the weight percent of (A), (B), and (C) is based on the total weight of the monomers, and
wherein the capsule core comprises a lipophilic substance which comprises a biocide.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/856,530Filed 4 Apr 2013 · continuation
Priority: EP 0612601713 Dec 2006
Published: US 2013/0225717 A129 Aug 2013
Granted: 22 Dec 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

C08L 33/14
Homopolymers or copolymers of esters: of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
B01J 13/18
Polymerisation; cross-linking: in situ polymerisation with all reactants being present in the same phase
B01J 13/185
In situ polymerisation with all reactants being present in the same phase: in an organic phase
C09K 5/063
The change of state being from liquid to solid or vice versa: materials absorbing or liberating heat during crystallisation; Heat storage materials

Family

PCT/EP2007/063580Parent of this continuation · filed 10 Dec 2007
US 2013/0225717 A1Pre-grant publication · published 29 Aug 2013
Application12/517,360Parent of this continuation
US 8,449,981 B2Parent of this continuation
US 2010/0068525 A1Published application
US 9,217,080 B2This patent

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