Method for producing polyurethane emulsion for aqueous...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C524S839000, C524S840000

Reexamination Certificate

active

07405258

ABSTRACT:
[PROBLEMS] The invention is to provide an aqueous one-component coating agent that is environmentally friendly and safe, and is excellent in productivity and storage stability, and also in alkali resistance and solvent resistance of a coated film.[MEANS FOR SOLVING PROBLEMS] The problems are solved by providing a method for producing polyurethane emulsion for an aqueous one-component coating agent, comprising: reacting an organic diisocyanate (a1), a high molecular weight polyol (a2) and a low molecular weight glycol containing a carboxyl group (a3) to produce an isocyanate-terminated urethane prepolymer having a carboxyl group (A); mixing the urethane prepolymer (A) with a polyisocyanate containing a nonionic polar group (B); neutralizing the carboxyl group in the system with a neutralizing agent (C); and subjecting the mixture to emulsification in water and chain extension with water or an amine.

REFERENCES:
patent: 4501852 (1985-02-01), Markusch et al.
patent: 7-507086 (1995-08-01), None
patent: 11-228654 (1999-08-01), None
patent: 2001-213935 (2001-08-01), None
patent: 2002-211110 (2002-07-01), None
patent: 2003-183574 (2003-07-01), None
patent: 2003-226728 (2003-08-01), None
patent: 2003-253199 (2003-09-01), None
patent: 2003-253200 (2003-09-01), None
patent: 2004-107496 (2004-04-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method for producing polyurethane emulsion for aqueous... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing polyurethane emulsion for aqueous..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing polyurethane emulsion for aqueous... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2772786

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.