Low-temperature-curable, solid polyurethane powder coating...

Details Low-temperature-curable, solid polyurethane powder coating... Low-temperature-curable, solid polyurethane powder coating...

2005-07-05

2005-07-05

Sergent, Rabon (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

C427S385500, C427S388100, C427S388200, C427S389000, C427S389700, C427S393000, C427S393500, C428S423100, C428S425100, C428S425600, C428S425800, C525S123000, C525S124000, C525S424000, C525S440030, C525S453000, C525S454000, C525S455000, C525S457000, C525S458000, C525S460000, C525S467000, C525S528000, C528S052000, C528S053000, C528S054000, C528S060000, C528S065000, C528S066000, C528S073000, C528S076000, C528S080000, C528S085000

Reexamination Certificate

active

06914115

ABSTRACT:
Polyurethane powder coating compositions containing uretdione groups and curing at low temperatures are provided, along with processes for preparing such compositions, and their use as powder coatings, wherein the compositions generally contain: A) a uretdione-containing powder coating hardener derived from aliphatic, (cyclo)aliphatic, cycloaliphatic or aromatic polyisocyanates and hydroxyl-containing compounds, and having a melting point from 40 to 130° C., a free NCO content of less than 5% by weight, and a uretdione content of 6-18% by weight; B) a hydroxyl-containing polymer having a melting point from 40 to 130° C., and an OH number between 20 and 200 mg KOH/gram, and C) a catalyst of the formula [NR1R2R3R4]+[R5]−, in which R1-R4simultaneously, or independently of one another, are alkyl, aryl, aralkyl, heteroaryl or alkoxyalkyl radicals, and each R1-R4is aromatic, linear or branched, unbridged or bridged with other radicals, R1-R4.

REFERENCES:
patent: 4732957 (1988-03-01), Schuster et al.
patent: 5464921 (1995-11-01), Laas et al.
patent: 5777061 (1998-07-01), Yonek et al.
patent: 198 56 878 (2000-06-01), None
patent: 0 065 863 (1982-12-01), None
patent: 2 119 356 (1983-11-01), None
patent: WO 99/64233 (1999-12-01), None
U.S. Appl. No. 10/836,540, filed May 3, 2004, Spyrou et al.
U.S. Appl. No. 10/836,407, filed May 3, 2004, Spyrou et al.
K. Jinsoo, et al. Chemie Ingenieur Technik, vol. 73, No. 5, pp. 461-468, XP-001154914, “Sol-Gel Synthesis and Spray Granulation of Porous Titania Powder”, 2001.
R. K. Karn, et al., International Journal of Hydrogen Energy, vol. 24, No. 1, pp. 27-35, XP-004158829, “On the Synthesis of Nanostructured TiO2Anatase Phase and the Development of the Photoelectrochemical Solar Cell”, Jan. 1999.
B. O'Regan, et al., Nature, vol. 353, No. 6346, pp. 737-740, XP-000371693, “A Low-Cost, High Efficiency Solar Cell Based on Dye-Sensitized Colloidal TiO2Films”, Oct. 24, 1991.

Affiliated with

Also associated with

Rating

Low-temperature-curable, solid polyurethane powder coating... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low-temperature-curable, solid polyurethane powder coating..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-temperature-curable, solid polyurethane powder coating... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3413931