Waterborne polyamide and their chain extension with isocyanates to form cationic waterborne polyureas dispersions
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United States of America Patent
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app pub date -
Nov 13, 2015
filing date -
Dec 18, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
An improved process for forming polyamide dispersions in water utilizing carbon dioxide to facilitate dispersion of the polyamide is disclosed. The polyamides are generally below 30,000 or 40,000 g/mole molecular weight when dispersed, but can be chain extended with polyfunctional species such as polyisocyanates after dispersion. The dispersions are useful in coatings, adhesives, and inks. Composites and hybrids of these other polyamides with vinyl polymers are also disclosed and claimed.
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International Classification(s)
- 2015 Application Filing Year
- C08J Class
- 2246 Applications Filed
- 1523 Patents Issued To-Date
- 67.81 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- C08J Class
- 64.36 % this patent is cited more than
- 5 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 5, 2027 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 5, 2031 |
