摘要:
An isomeric mixture of C- and O-allylated aromatic compounds is prepared by contacting an allyl halide, a hydroxyaromatic reactant, an alkaline agent, water and a quaternary salt catalyst. This mixture may be thermally isomerized to obtain the C-allylated compounds in high yield.
摘要:
Polyimido-ester compounds having the formula RO--C(O)--R.sub.1 --C(O)--OR are disclosed wherein R is an alkylene N-dicarboximido radical containing cycloolefinic unsaturation and R.sub.1 is the divalent residue of an unsaturated polycarboxylic acid such as fumaric, itaconic, aconitic, mesaconic, or glutaconic acid. These compounds are blended with unsaturated resins such as unsaturated polyester resin or vinyl ester resin, and polymerizable unsaturated monomers such as styrene to provide thermosettable resin compositions which can be cured to provide castings or laminates with improved resistance to thermal aging.
摘要:
Oligomeric vinyl esters are prepared by reacting (A) an epoxy resin prepared by co-oligomerizing (1) a mixed cyanate of a polyphenol and (2) an aromatic polyamine with (B) a monounsaturated monocarboxylic acid.These vinyl ester resins are (oligomeric vinyl ester and copolymerizable monomer blend) useful in the preparation of laminates, composites, castings, coatings and the like.
摘要:
Alkenylphenylglycidyl ether capped styryl pyridines and styryl pyrazines are prepared by etherifying with an alkenylphenylglycidyl ether the reaction product of (A) a substituted pyridine and/or pyrazine with (B) a substituted aromatic aldehyde with the proviso that at least one of the components (A) or (B) contains a hydroxyl group which is susceptible to etherification by an alkenylphenylglycidyl ether. These alkenylphenylglycidyl ether capped styryl pyridines and pyrazines can be homopolymerized or copolymerized with other materials to produce polymers having excellent high temperature resistance, good mechanical strength and excellent processability and are used to make cured composites with heat resistant fibers that have applications in high temperature environments such as engine compartments and/or fire walls.
摘要:
Vinyl ester resin compositions containing triazine groups or both triazine and oxazoline groups are prepared by reacting (a) a polyepoxide containing triazine groups, or (b) a polyepoxide containing both triazine and oxazoline groups, or (c) a mixture of (a) and (b) above with (d) about 0.75 to about 1, preferably from about 0.9 to about 1, moles of a monounsaturated monocarboxylic acid or mixture of monounsaturated monocarboxylic acids per epoxide group in the presence of (e) a suitable quantity of a suitable catalyst.
摘要:
The subject oligomers are prepared by reacting a diphenol with a cyanogen halide in the presence of an alkaline agent. The resultant product is then reacted with an epoxy resin thereby producing a hydroxy aromatic oligomers containing triazine and oxazoline groups. An epoxy resin is then prepared by reacting the previously formed oligomers with an epihalohydrin followed by dehydrohalogenation of the resultant product.
摘要:
New compositions of matter are disclosed which comprise (1) a cyanate-containing polymer or mixture thereof and optionally (2) a polycyanate or mixture thereof and/or (3) an epoxy resin. These compositions are thermosettable upon heating in the presence of suitable curing agents or catalysts.
摘要:
A new class of polyesteramides having improved properties is the reaction product of a polyol, an alkanolamine, a polycarboxylic acid and a norbornyl terminal group.
摘要:
Phosphonopolyester oligomers are prepared from hydroxyalkylated 2,2',-bis(3-allylphenyl-4-hydroxy) alkanes and phosphonyl dihalides. The oligomers are useful in the preparation of polyester resins, epoxy resins, and polyurethanes.
摘要:
Unsaturated polyesters resins are prepared having improved flexural strength, corrosion resistance, and heat resistance by incorporating into the resins a dicyclopentadiene ether compound having one of the formulas ##STR1## where R.sub.o =dicyclopentadienyln=0-2R.sub.1 =--C.sub.x H.sub.2x --(O--C.sub.x H.sub.2x).sub.zx=1-4z=0-2R.sub.2 =--OH, --O--R.sub.oR.sub.3 =R.sub.2, --O--CH.sub.2 --CH(R.sub.2)--CH.sub.2 --R.sub.2R.sub.4 =--C.sub.y H.sub.2y --(O--C.sub.y H.sub.2y).sub.wy=2-4w=0-2R.sub.5 =R.sub.2, --CH.sub.2 --OH, --CH.sub.2 --O--R.sub.o, --CH.sub.3, or --HR.sub.6 =--OH, --CH.sub.2 --OH, --CH.sub.2 --O--R.sub.o, --O--R.sub.o, --(O--C.sub.y H.sub.2y).sub.w --OH; and whereinR.sub.2, R.sub.3, R.sub.5 and R.sub.6 are chosen so that each compound has at least one hydroxyl group, with the proviso that the combined moles of (D) and (E) are in the range of 0.30 to 2.2 moles per mole of (A).