Blocked isocyanate crosslinker solution

Details Blocked isocyanate crosslinker solution Blocked isocyanate crosslinker solution

2005-11-29

2005-11-29

Gorr, Rachel (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...

C524S376000, C525S403000, C525S528000

Reexamination Certificate

active

06969754

ABSTRACT:
A low viscosity blocked isocyanate solution can be made by reacting together a polymeric isocyanato compound and propylene glycol, or a polymeric primary or secondary amine and propyl carbonate. The resulting beta-hydroxypropyl urethane polymer can be combined with propylene glycol monomethyl ether as a reducing solvent to form a pourable high-solids solution with good flow properties at room temperature. The solution has lower viscosity than is obtained using ethylene glycol as a blocking agent or using several non-HAPS reducing solvents that are similar to propylene glycol monomethyl ether. The solution can readily be combined with electrodepositable paint ingredients to form a curable coating composition.

REFERENCES:
patent: 4435559 (1984-03-01), Valko
patent: 4484994 (1984-11-01), Jacobs, III et al.
patent: 4528363 (1985-07-01), Tominaga
patent: 4615779 (1986-10-01), McCollum et al.
patent: 4720569 (1988-01-01), Tominaga
patent: 4820830 (1989-04-01), Blank
patent: 5202383 (1993-04-01), Moriarity et al.
patent: 5250164 (1993-10-01), Valko
patent: 5594049 (1997-01-01), Yamada et al.
patent: 6110341 (2000-08-01), McMurdie et al.
patent: 6372108 (2002-04-01), Hoenig et al.
patent: 6410146 (2002-06-01), Shirakawa et al.
patent: 2004/0069637 (2004-04-01), Eswarakrishnan et al
patent: WO 03/054048 (2003-07-01), None
“Chemistry and Properties of Blocked Aliphatic Isocyanates,”Cytec(1/99).
“Jeffsol® Alkylene Carbonates Synthesis of Hydroxyalkyl Urethanes,”Huntsman Technical Bulletin, pp. 1-3 (2003).
“Product Information Mondur MR Aromatic Polyisocyanate Product Code G172,”Bayer Corporation, Coatings and Colorants Division (Jun. 30, 2002).
“Product Information PAPI 94 Polymeric MDI,”Dow Plastics, pp. 1-4, (Aug. 2001).
“Polyurethanes North America Products,” [online] The Dow Chemical Company, [retrieved on Nov. 26, 2003]. Retrieved from the Internet: <URL: http://www.dow.com/polyurethane
a/product/iso/polymeric.htm.
Wicks, Douglas A. et al., “Review Blocked isocyanates III Part B: Uses and applications of blocked isocyanates”,Elsevier Progress in Organic Coating, pp. 1-83 (2001).

Affiliated with

Also associated with

Rating

Blocked isocyanate crosslinker solution does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Blocked isocyanate crosslinker solution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blocked isocyanate crosslinker solution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3514978