| Record no |
201102226071 |
| Activity status |
Dead or Administration by others |
| Working Title |
PROCESS FOR THE PREPARATION OF STABLE AQUEOUS URETHANE DISPERSIONS |
| Working Inventors |
LALGUDI SRINIVASAN RAMANATHAN;KUNDALIK GANPAT RAUT;SUBAGIRI RAMASWAMYIYENGAR SRINIVASAN;SWAMINATHAN SIVARAM; |
| Contributing institutions |
NCL |
| Administered by |
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| Ownership |
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| Categories > Subjects |
Polymer sciences and engineering |
| Categories > Portfolio |
Polymerization/Polymer catalysis |
| Disclosure number |
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| NCL No |
1997-NCL-0080 |
| CSIR No |
1997-NF-0161
|
| Priority date |
06-12-1998 |
| Country |
US |
| Application number |
09/143011 |
| Provisional filing date |
|
| Complete filing date |
08-28-1998 |
| Publication status |
Yes |
| Publication date |
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| Publication no |
|
| Granted number |
6239213 |
| Granted date |
05-29-2001 |
| Final title |
PROCESS FOR THE PREPARATION OF STABLE AQUEOUS URETHANE DISPERSIONS |
| Final Inventors |
LALGUDI SRINIVASAN RAMANATHAN;KUNDALIK GANPAT RAUT;SUBAGIRI RAMASWAMYIYENGAR SRINIVASAN;SWAMINATHAN SIVARAM; |
| Abstract |
This invention relates to the process lor the preparation ol aqueous polyurethane dispersions which comprises preparing an isocynate terminated carboxyl group containing prepolymer by preparing a solution ol a polyol in an organic solvent adding an ionic group containing compound to this solution heating this mixture at a controlled temperature adding an isocyanate in the reaction mixtute optionally in the presence ol a catalyst depending upon the isocynate stirring neutralizing and cooling the mixture at ambient temperatures and finally dispersing the mixture in water to obtain the product. |
| Case status |
Granted + Allowed to lapse |
| Licensing status |
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| Licensing case no |
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| Client name |
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| Lead inventors |
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| Categories > Industry > Primary |
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| Categories > Industry > other |
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