US 7,842,745 B2 · Degassing compositions for curable coatings

Abstract

Non-yellowing degassing compositions which enhance degassing in powder coatings and other film-forming curable coatings are disclosed. The non-yellowing compositions contain degassing agents including a plurality of unfused aromatic rings and at least one functional group selected from ketals, carbamates, carbonates and carboxylic acid esters. The degassing agents resist decomposition and discoloration, and are relatively stable at resin curing conditions. The degassing agents may be synergistically combined with other materials, such as fatty acid amide-containing waxes, to produce new and surprisingly effective degassing compositions suitable for use in powder coatings. Curable compositions which utilize the new degassing compositions are also disclosed.

Claims9

Dependent claims

A degassing composition, which comprises:

an amide wax;
and
a degassing agent of the formula:
wherein
each of R1, R2, R3, R4, and R5 is independently hydrogen, alkanyl of about one to about twenty carbon atoms, alkenyl radical of about one to about twenty carbon atoms or aryl of about one to about twenty carbon atoms;
R6 is independently hydrogen, alkanyl of about one to about eighteen carbon atoms, alkenyl of about one to about eighteen carbon atoms or aryl of about one to about eighteen carbon atoms;
and
n is an integer within the range of about 1 to about 16, inclusive.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

12/584,394Filed 4 Sep 2009 · division

Priority

19 Apr 2007

Published

US 2010/0204373 A112 Aug 2010

Granted

30 Nov 2010

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

C08K 5/20
Nitrogen-containing compounds: carboxylic acid amides
C08G 59/4276
Macromolecular compounds obtained by reactions other than those involving unsaturated carbon-to-carbon bindings: polyesters
C08K 5/0008
Use of organic ingredients: organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
C08K 5/1575
Having two oxygen atoms in the ring: six-membered rings

Degassing compositions for curable coatings

Life of this patent

Degassing compositions for curable coatings

Life of this patent

Abstract

Claims9