Title:
THERMOSETTING SILICON-AND-BORON-CONTAINING COPOLYMER ANDITS PRODUCTION
Document Type and Number:
Japanese Patent JP3290463
Kind Code:
B2
Abstract:
PURPOSE: To obtain the copolymer convertible to ceramics through thermal decomposition, by reaction of polysilazane with a polyborosilazane having B- contg. cross-link, specific B/Si ratio and number-average molecular weight and a thermoplastic Si-contg. polymer.
CONSTITUTION: The objective thermosetting copolymer can be obtained by reaction of (A) polysilazane with (B) a polyborosilazane 0.01-3 in B/Si atom ratio and 200-50000 in number-average molecular weight having cross-links of formula I (R1 is H, halogen, 1-20C alkyl, alkenyl, aryl, alkoxy, OH or amino), formula II (R2 is residue bound to the nitrogen atom in nitrogen atom-bearing groups among R1), formula III, or formula IV (at least two of a total of six atoms composed of respective three nitrogen and boron atoms are used for cross-linking, and R1 may be bound to the rest of the atoms) and (C) a thermoplastic silicon-contg. polymer 100-50000 in number-average molecular weight.
Inventors:
Toru Funayama
Yuji Tashiro
Yasuo Shimizu
Hideki Matsuo
Takeshi Isoda
Yuji Tashiro
Yasuo Shimizu
Hideki Matsuo
Takeshi Isoda
Application Number:
JP13888592A
Publication Date:
June 10, 2002
Filing Date:
May 29, 1992
Export Citation:
Assignee:
TonenGeneral Sekiyu KK
International Classes:
C04B35/571; C04B35/56; C08G77/48; C08G77/60; C08G79/00; C08G79/08; C08G81/00; (IPC1-7): C08G77/60; C04B35/571; C08G79/08; C08G81/00
Domestic Patent References:
| JP284437A |
Attorney, Agent or Firm:
Aoki Ao (5 people outside)