초록 ▼

A microencapsulated adhesive and a method for producing that microencapsulated adhesive is disclosed. The adhesive is produced from an alkyl acrylate or methacrylate monomer having about 4 to about 12 carbon atoms, or a mixture thereof. The monomer is encapsulated by interfacial polymerization, gela

A microencapsulated adhesive and a method for producing that microencapsulated adhesive is disclosed. The adhesive is produced from an alkyl acrylate or methacrylate monomer having about 4 to about 12 carbon atoms, or a mixture thereof. The monomer is encapsulated by interfacial polymerization, gelatin/gum arabic coacervation or melamine/formaldehyde encapsulation. The microcapsules may be polyamide or polyurea. The monomer is polymerized in the microcapsules by heating to form an adhesive that is non-tacky, but becomes tacky upon application of external forces, such as shearing. The microencapsulated adhesive composition may be used, among other applications, as an adhesive for stamps or envelopes.

대표청구항 ▼

1. A method of producing a microencapsulated adhesive comprising:providing a mixture containing as a major component an alkyl acrylate or methacrylate monomer, or a mixture thereof, and a free radical initiator; microencapsulating said mixture of monomer and initiator; heating said microencapsulated

1. A method of producing a microencapsulated adhesive comprising:providing a mixture containing as a major component an alkyl acrylate or methacrylate monomer, or a mixture thereof, and a free radical initiator; microencapsulating said mixture of monomer and initiator; heating said microencapsulated monomer and initiator for a time and at a temperature sufficient to cause said monomer to polymerize inside said microcapsules.