摘要:
Novel bis-anthranilates are obtained by reacting 1 mol of a N,N'-bis-(hydroxyalkyl)-urea with 2 mols of isatoic anhydride. The novel bis-anthranilates are valuable chain extenders for polyurethanes and valuable crosslinking agents for polyurea and epoxide resins.
摘要:
Novel anthranilates of oxyalkylated cyanuric acid are obtained by reacting the oxyalkylated cyanuric acid, for example 1,3,5-tris-(2'-hydroxyethyl) isocyanurate, with isatoic anhydride. The anthranilates are valuable chain extenders and crosslinking agents in the production of polyurethanes and polyurea resins and can also be used as curing agents for epoxide resins.
摘要:
Anthranilates of the formula ##STR1## wherein each R is hydrogen or ##STR2## each n is the number 2, 3 or 4, y is nought or 1 and X is an alkylene radical having 1 to 8 C atoms, meta- or para-phenylene or meta- or para-cyclohexylene, are obtained by reacting a hydroxyalkylated dicarboxylic acid diamide of the formula ##STR3## wherein each R is hydrogen or --CH.sub.2).sub.n OH and n, y and X are as defined above, with isatoic anhydride, preferably in the presence of an alkaline catalyst.The novel compounds are valuable chain extenders and crosslinking agents for the production of polyurethanes and polyurea resins and are also suitable as curing agents for epoxide resins.
摘要:
Liquid polyglycidyl compounds, diethyltoluylenediamine, a curing accelerator and optionally further additives form a liquid matrix system with which fibres and fibre shapes are impregnated by known techniques, particularly by filament winding, pultrusion and injection processes. The components thus produced are for example tubes capable of withstanding pressure and torsional stress.
摘要:
Bis-anthranilates of the formula ##STR1## or mixtures thereof, in which, in the formula, m and n are each 0 or a number from 1 to 5 and the sum of m and n must be at least 1, y is 0 or 1 and X is an alkylene radical having 1 to 8 C atoms, para- or meta-phenylene or para-cyclohexylene.The novel compounds are valuable chain extenders and crosslinking agents for the production of polyurethanes and polyurea resins and are also suitable as curing agents for epoxide resins.
摘要:
Bis-anthranilates of the formula I ##STR1## or mixtures thereof, in which, in the formula, m and n are each 0 or a number from 1 to 5, preferably a number from 1 to 3, and the sum of m and n must be at least 1, as novel chain extenders and crosslinking agents for the production of polyurethanes and polyurea resins. The compounds of the formula I are also suitable as curing agents for epoxide resins.
摘要:
New dialcohols of mononuclear, five-membered or six-membered, unsubstituted or substituted N-heterocyclic compounds which contain two NH-groups in the molecule, by reaction of mononuclear, five-membered or six-membered, unsubstituted or substituted N-heterocyclic compounds, for example hydantoin, barbituric acid, uracil, dihydrouracil, parabanic acid and the corresponding derivatives, with ethylene oxide or propylene oxide to give dialcohols. These diols are useful as intermediates for the preparation of polymers, such as polyesters or polyurethanes, or of epoxy resins.
摘要:
The invention relates to new triols of the formula ##STR1## wherein R.sub.1 and R.sub.2 denote hydrogen, methyl, ethyl or isobutyl, or together denote tetramethylene or pentamethylene, R.sub.3 denotes hydrogen or methyl, and R.sub.4 denotes hydrogen or methyl or ethyl.The new triols are useful for the manufacture of alkyl resins and polyurethanes having high glass transition temperatures.
摘要:
New homopolyesters and copolyesters are obtained by polycondensing dicarboxylic acid derivatives which contain a N,N-heterocyclic radical and which are manufactured from cyclic ureides and 4-halogenomethylbenzoic acid derivatives, and, if appropriate terephthalic acid of isophthalic acid derivatives, with alkanediols and/or N,N-heterocyclic diols. The new polyesters, which are distinguished by valuable toughness and high Tg values, are particularly suitable for use as "engineering plastics" materials.
摘要:
Adducts of cyclic urea derivatives and dialkyl phosphites, containing glycidyl groups, for example adducts of a diglycidyl compound of hydantoins, substituted in the 5-position by alkyl groups or an alkylene group, and of diethyl phosphite or dimethyl phosphite. These adducts are used for the manufacture of flame-retarding plastics.