Property enhancement of anionically polymerized nylon with dual initiators
US4501821A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1983 |
| Grant date | Feb 26, 1985 |
| Priority date | — |
| Expiry date | Jul 28, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A catalyst and initiator composition for lactam polymerization is composed of a Grignard catalyst for lactam polymerization and initiator system containing PA1 (a) at least one material represented by the following structural formula: ##STR1## (b) at least one material represented by the following structural formula: ##STR2## wherein q and v are independently an integer of at least 1; Z and W are independently selected from a compound or polymeric material, said compound being composed of at least two elements in chemical combination which contain up to two repeating structural units, said polymeric material being a macromolecule formed by the chemical union of at least two coreactants and having at least three repeating structural units; with the proviso that at least a portion of either or both of the materials (a) or (b) is a polymeric material. In the above formulas, R, R', R", R'" are independently hydrogen, a C.sub.1 to C.sub.10 aliphatic radical, C.sub.3 to C.sub.10 cycloaliphatic radical, C.sub.6 to C.sub.10 aryl or alkaryl radical, and independently R and R" and the carbon to which each is attached are included as part of a cycloaliphatic or aromatic ring; and Y is an alky…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.