Polyamide and polyimide addition polymers prepn. - from maleic acid semiamides or maleimides and dihydrophthalic acid anhydride
Реферат: Polymers consisting mainly of units of formula: (where R is an opt. halogenaliphatic, cycloaliphatic or aromatic gp., opt. contg. heteroatoms) are prepd. by reacting (A) a cpd. of formula with (B) dihydrophthalic acid anhydride, in equimolar quantities, at 0-200 (50-120) degrees C, opt. in the presence of an organic liquid, copolymerisable monomers, activators and/or initiators. Products are useful as sizes for paper, lacquers and as protective finishes for wood, metal and concrete surfaces.
Laminated article from curable resin composition comprising bis maleimide and alkenyl phenyl hydroxy ether
Номер патента: US4917954A. Автор: Peter Koenig,Horst Stenzenberger. Владелец: Technochemie GmbH Verfahrenstechnik. Дата публикации: 1990-04-17.