Dispersing agent
US5882393A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1997 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | Sep 23, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S516/915
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a dispersing agent or salts thereof, comprising the reaction product of: PA1 A one or more polyisocyanates with an average functionality of about 2 to about 5, with PA1 B a compound of the type Y--R--X, wherein Y represents a ring structure with at least one nitrogen atom in the ring, R represents a chain of at least three atoms and X has the meaning O--R.sup.1 or N(R.sup.1) (R.sup.2), wherein R.sup.1 is H or a group of the formula R.sup.3 --Z, wherein R.sup.3 represents a chain with at least two atoms and Z represents OH or NH.sub.2, and R.sup.2 represents a group of the formula R.sup.3 --Z, which compound is obtainable through reaction of an acrylate compound or an epoxide compound with a cyclic compound which has at least one group of the structure ##STR1## in the ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.