摘要:
Disclosed are copolyesters comprising an acid component of 4,4'-biphenyldicarboxylic acid and a glycol component comprising 1,4-cyclohexanedimethanol and ethylene glycol. The copolyesters exhibit unusually high tensile strength.
摘要:
Film-forming graft copolymers having a backbone and graft segments linked together by a chain transfer agent and a diisocyanate and a process for their preparation.
摘要:
POLYBENZIMIDAZOLECARBOXAMIDE POLYMERS ARE PROVIDED; THESE ARE PREPARED BY TREATING A POLYMER CONTAINING IMIDAZOPYRROLONE RING SYSTEMS WITH AMMONIA; THE POLYMERS ARE USEFUL AS ADHESIVES, ESPECIALLY FOR HIGH TEMPERATURE APPLICATIONS.
摘要:
A resin composition comprises a polylactic acid resin (A) 75-10 wt %, an aromatic polycarbonate resin (B) 25-90 wt % and a polymer compound to which a glycidyl compound or an acid anhydride is grafted or copolymerized (D) 1-50 wt parts with respect to 100 wt parts of the total of the component (A) and the component (B).
摘要:
New polyoxazolidines can be defined with the general formula: ##STR1## where R, R.sub.1, R.sub.2 and n have the meaning specified in the description. These polyoxazolidines are useful cross-linking agents for hydrocuring systems based on polyisocyanates, acrylate polymers and polyepoxides, in compositions for paints, coatings, sealants and adhesives.
摘要:
MONOMERIC 5-(3-PERFLUOROALKYL-1,2,4-OXADIAZOLYL) OLEFINS FORM HOMOPOLYMERS AND COPOLYMERS WITH OTHER ETHYLENICALLY UNSATURATED COMONOMERS. THE POLYMERS OBTAINED HAVE VALUABLE SOIL REPELLENT AND DYESITE PROPERTIES WHICH ARE ESPECIALLY USEFUL IN TEXTILE FINISHES. PREFERRED COMPOUNDS EXEMPLIFIED ARE 1,2-BIS (5-(3-N-PERFLUOROHEPTYL-1,2,4-OXADIAZOLYL))ETHYLENE AND 5-ISOPROPENYL-3-N-PERFLUOROHEPTYL-1,2,4-OXADIAZOLE.
摘要:
NORMALLY SOLID POLY(1,3,4-OXADIAZOLES) CAN BE PREPARED BY THE CYCLODEHYDRATION OF N,N''-BIS(ISOMALEIMIDE). POLYHYDRAZIDES. THESE PRODUCTS ARE CHARACTERIZED BY THEIR THERMAL STABILITY AND HIGH MELTING POINTS.