Aminated polysilazane and process for the preparation thereof
US6310168A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2000 |
| Grant date | Oct 30, 2001 |
| Priority date | — |
| Expiry date | Feb 7, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/54
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An amine residue-containing polysilazane having a number average molecular weight of 100-100,000 and having a molecular chain containing a silazane structure represented by the general formula (I) shown below and/or a silazane structure represented by the general formula (II) shown below: ##STR1## PA1 wherein R.sup.1 and R.sup.2 each stand for hydrogen, a hydrocarbyl group or a hydrocarbyl group-containing silyl group, A and A.sup.2 each stand for a divalent hydrocarbyl group, B stands for an N-hydrocarbyl group-substituted amine residue or a cyclic amine residue, B.sup.2 stands for a divalent linear amine residue or a divalent cyclic amine residue and p, r and q are each 0 or 1. The above polysilazane may be obtained by reacting a polysilazane with a mono- and/or dihydroxyl compound having an amine residue in an inert organic solvent containing no active hydrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.