Radiation-curable, aqueous dispersions, production and use thereof

• US 5,684,081 A
• Filed: 07/09/1996
• Issued: 11/04/1997
• Est. Priority Date: 07/13/1995
• Status: Expired due to Term

• Current Assignee: Dow Global Technologies, Inc. (Dow, Inc.)
• Original Assignee: Wolff Walsrode AG (Dow, Inc.)
• Inventors: Hecht, Reinhold, Dannhorn, Wolfgang, Luhmann, Erhard, Hoppe, Lutz
• Primary Examiner(s): NILAND, PATRICK DENNIS
• Application Number:
  US08/677,289
• Time in Patent Office: 483 Days
• Field of Search: 525/123, 525/455, 525/131, 524/590, 524/591, 524/507, 524/539, 524/547
• US Class Current: 524/507
• CPC Class Codes: C08G 18/0804 Manufacture of polymers containing ionic or ionogenic groups
• CPC Class Codes: C08G 18/0823 containing carboxylate salt groups or groups forming them
• CPC Class Codes: C08G 18/12 using two or more compounds having active hydrogen in the first polymerisation step
• CPC Class Codes: C08G 18/3225 Polyamines
• CPC Class Codes: C08G 18/68 Unsaturated polyesters
• CPC Class Codes: C08G 18/722 Combination of two or more aliphatic and/or cycloaliphatic polyisocyanates
• CPC Class Codes: C09D 175/14 Polyurethanes having carbon-to-carbon unsaturated bonds

Abstract

The present invention relates to polyester acrylate/urethane dispersions based on polyester acrylate prepolymers containing hydroxyl groups, obtainable by polyaddition of

A. 40-90 wt. % of one or more polyester acrylate prepolymers containing hydroxyl groups and having an OH content of 40-120 mg of KOH/g and

B. 0.1-20 wt. % of one or more mono- and/or difunctional compounds reactive towards isocyanate groups, which compounds contain groups which are cationic, artionic and/or have a dispersant action due to ether groups with

C. 10-50 wt. % of one or more polyisocyanates

D. 0.0-30 wt. % of polyols

together with a subsequent reaction with

E. 0.1-10 wt. % of one or more di- and/or polyamines.

Claims

1. Polyester acrylate/urethane dispersions based on polyester acrylate prepolymers containing hydroxyl groups, obtainable by polyaddition of

A. 40-90 wt. % of one or more polyester acrylate prepolymers containing hydroxyl groups and having an OH content of 40-120 mg of KOH/g and

B. 0.1-20 wt. % of one or more mono- and/or difunctional compounds reactive towards isocyanate groups, which compounds contain groups which are cationic, anionic and/or have a dispersant action due to ether groups with

C. 10-50 wt. % of one or more polyisocyanates

D. 0.0-30.0 Wt. % of polyols

together with a subsequent reaction with

E. 0.1-10 wt. % of one or more di- and/or polyamines.

2. Dispersions according to claim 1, characterised in that

A amounts to 50 to 80 wt. %,

B amounts to 2 to 15 wt. %,

C amounts to 15 to 40 wt. % and

D amounts to 0.0 to 20 wt. % and

E amounts to 0.5 to 7 wt. %.

3. In a lacquer including a lacquer binder, the improvement wherein said binder comprises a dispersion according to claim 1.