Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1997-12-09
1999-05-25
Hampton-Hightower, P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528310, 528322, 528332, 528335, 528336, 528351, 528353, C08G 7310, C08G 7316
Patent
active
059070285
ABSTRACT:
A method for making polyesterimide varnishes by polycondensing and imidat a mixture of trimellitic anhydride, 4,4'-diamino-diphenyl methane, glycol, dimethyl terephthalate and glycerol or tris(hydroxyethyl) isocyanurate or optionally p,p'-dihydroxy-diphenyl-dimethyl methane, with a transesterification catalyst added, and subsequently dissolving the resulting polyesterimide resin in an organic solvent with a crosslinking catalyst added, characterized by the feature that 2-methyl-1,3-propanediol and/or 2-butyl-2-ethyl-1,3-propanediol is used as the glycol or as one of the glycols.
REFERENCES:
patent: 3435002 (1969-03-01), Holub
patent: 3917892 (1975-11-01), Kawaguchi et al.
Jarmulski Tomasz
Jewl/oszewicz Wojciech
L/os-Kuchta Barbara
Penczek Piotr
Pl/atek Edward
Hampton-Hightower P.
Instytut Chemii Przemyslowej im. Prof. Ignacego Moscickiego ul.
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