Method of facilitating removal of bioorganic stains from surfaces

• US 9,193,873 B2
• Filed: 01/28/2014
• Issued: 11/24/2015
• Est. Priority Date: 05/01/2009
• Status: Active Grant

• Current Assignee: Toyota Motor Corporation, Regents of The University of Minnesota (University of Minnesota)
• Original Assignee: Toyota Motor Corporation, Toyota Motor Engineering & Manufacturing North America Incorporated (Toyota Motor Corporation), Regents of The University of Minnesota (University of Minnesota)
• Inventors: Wang, Ping, Wu, Songtao, Jia, Hongfei, Ishii, Masahiko, Zhang, Minjuan, Tong, Xiaodong
• Primary Examiner(s): Ariani, Kade
• Application Number:
  US14/166,376
• Publication Number:
  US 20140141490A1
• Time in Patent Office: 665 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: C07K 17/08 the carrier being a synthetic polymer
• CPC Class Codes: C08G 18/4081 Mixtures of compounds of group C08G18/64 with other macromolecular compounds
• CPC Class Codes: C08G 18/42 Polycondensates having carboxylic or carbonic ester groups in the main chain
• CPC Class Codes: C08G 18/6216 Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
• CPC Class Codes: C08G 18/6446 Proteins and derivatives thereof
• CPC Class Codes: C08G 18/706 the liquid medium being water
• CPC Class Codes: C08G 18/792 formed by oligomerisation of aliphatic and/or cycloaliphatic isocyanates or isothiocyanates
• CPC Class Codes: C09D 175/04 Polyurethanes
• CPC Class Codes: C09D 5/025 Preservatives, e.g. antimicrobial agents
• CPC Class Codes: C09D 5/1637 Macromolecular compounds
• CPC Class Codes: C09D 7/68 Particle size between 100-1000 nm
• CPC Class Codes: C09D 7/69 Particle size larger than 1000 nm
• CPC Class Codes: C12N 11/087 Acrylic polymers
• CPC Class Codes: C12N 11/098 formed in the presence of the enzymes or microbial cells
• CPC Class Codes: C12N 9/2411 Amylases
• CPC Class Codes: C12N 9/2414 Alpha-amylase (3.2.1.1.)
• CPC Class Codes: C12N 9/2417 from microbiological source

Abstract

Protein-polymer composite materials are provided according to embodiments of the present invention that include an admixture of a polymer resin, a surfactant and a non-aqueous organic solvent. An aqueous solution containing bioactive proteins is mixed with the admixture. The emulsion is mixed with a crosslinker to produce a curable composition. The curable composition is cured, thereby producing the protein-polymer composite material that is useful for facilitating removal of bioorganic stains.

Claims

1. A protein-polymer composite material, comprising:

one or more amylases dispersed in a two component non-aqueous organic solvent-borne polymer resin, said amylase in the form of a particle with an average particle size, wherein said average particle size in the protein-polymer composite material is in the range of 10 μ

m (average diameter) or less.

2. The material of claim 1, wherein said resin comprises a hydroxyl-functionalized acrylate resin.

3. The material of claim 1 wherein said resin comprises a polyisocyanate crosslinker.

4. The material of claim 1 wherein said amylase is an α

-amylase.

5. The material of claim 1 further comprising one or more additives.