Preparation and characterization of polyureas from divalent metal (Ba, Sr, Pb, Zn) salts of sulfanilic acid
✍ Scribed by Wulin Qiu; Wenxiang Zeng; Xuexian Zhang; Can Li; Lude Lu; Xin Wang; Xujif Yang; Bryan C. Sanctuary
- Book ID
- 102737098
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 554 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0021-8995
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
A series of novel metal-containing bismaleimides monomers BMI(M) (M Å Ca, Sr, Ba, Pb, Co, Ni) were prepared by reacting maleic anhydride with diaminodiphenyl carboxylate to form bismaleamic acid precursors, and subsequently by imidizing them chemically or thermally to form bismaleimides. The samples
## Abstract Metal‐containing polyureas having ionic links in the main chain were synthesized by the polyaddition reactions of 2,4‐toluylene diisocyanate with mixtures of divalent metal salts of __p__‐aminobenzoic acid and 4,4′‐diaminodiphenylmethane (4,4′‐methylenedianiline). Mg and Ca were used as
Some 50 metal-containing polyimides with the metallic elements (Mg, Ca, Sr, Ba, Pb, Co, Ni) in the main chain were prepared first by reacting pyromellitic dianhydride (PMDA) with the mixture of divalent metal salts of p-aminobenzoic acid [ABA(M)] and 4, 4'-diaminodiphenylmethane (MDA) to form polyam