Emulsion polymer of heterogeneous molecular weight and preparation thereof
US4501845A · kind A · utility
22Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 1983 |
| Grant date | Feb 26, 1985 |
| Priority date | — |
| Expiry date | May 31, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2/22
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a polymer and its preparation by reacting part of the monomers in the reactor in such a way as to obtain a high molecular weight product, and reacting at least one other portion of the monomer in the same reactor in such a way as to obtain at least one low molecular weight fraction. The products are useful in contact adhesives, particularly when blended with an aminoplast or phenoplast as a tackifier and crosslinker, and with a thickening agent such as polyvinyl alcohol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.