摘要:
A four-component composition is disclosed comprising a hydroxyl-bearing polymer; a liquid, amino- or hydroxyaromatic diluent having an atmospheric boiling point of about 150.degree. C. or greater; an aminoplast or phenolic resin capable of curing the hydroxyl-bearing polymer and a strong acid catalyst for the reaction between the first and third components. Optionally, a pigment may be added to the composition.
摘要:
A heat-curable composition is disclosed comprising a hydroxyl-bearing polymer; a liquid, polyglycol hemi-formal diluent; and an aminoplast or phenolic resin capable of curing the hydroxyl-bearing polymer. Optionally, a pigment may be added to the composition.
摘要:
Polyarylene sulfide resins essentially free of disulfide linkages are obtained by reacting S.sub.2 Cl.sub.2 or S.sub.2 Br.sub.2 with a benzenoid aromatic compound having 0-2 substituents per benzene ring at about 90.degree. C.-350.degree. C. in the presence of a metal halide Friedel-Crafts catalyst. The process is conveniently carried out at 90.degree. C.-150.degree. C. in inert solvent solution from which the polymer precipitates as it is formed.
摘要:
A four-component composition is disclosed comprising 100 parts of a non-aminoplast hydroxyl-bearing polymer; about 5-100 parts of a (poly)glycol monoether having an atmospheric boiling point of about 300.degree. C. or greater; an aminoplast or phenolic resin capable of curing the hydroxyl-bearing polymer and a strong acid catalyst for the reaction between the first and third components. Optionally, a pigment may be added to the composition.
摘要:
The title compounds are of the formula: ##STR1## wherein R is a chemical bond, oxygen, sulfur, alkylene or alkylidene; W is hydrogen or a (--CR.sub.1 R.sub.2 --CR.sub.3 R.sub.4 --NHR.sub.5) group with the proviso that at least two W groups are (--CH.sub.1 R.sub.2 --CR.sub.3 R.sub.4 --NHR.sub.5) groups; wherein R.sub.1 -R.sub.4 are each independently hydrogen, lower alkyl or hydroxy-substituted lower alkyl; R.sub.5 is hydrogen or a ##STR2## group, wherein R.sub.6 is hydrogen, hydrocarbyl or inertly substituted hydrocarbyl; X, Y and Z are each independently inert substituents; m and p are each independently integers of from zero to four, inclusive; n is an integer of from zero to three, inclusive; q is a number of from zero to about ten; and M is alkylene or alkylidene. They are conveniently prepared by reacting a 2-oxazoline of the formula: ##STR3## with a polyhydric polyphenol of the formula: ##STR4## in the presence of certain metal salt catalysts (e.g. zinc acetate).
摘要:
A method for the preparation of soluble, fusible, aminomethyl diaryl compound resins in the absence of halomethylation or halomethylated materials, which method comprises (a) refluxing a mixture of diaryl compound, an aldehyde, a saturated monocarboxylic acid, and a small amount of a strong acid catalyst to form an aldehyde-diaryl resin, (b) stripping off excess monocarboxylic acid under vacuum, and then (c) adding at least about 1 mole of a primary or secondary amine containing at least one additional nontertiary amino group per reactive group on the aldehyde-diaryl resin.
摘要:
New curable compositions, comprising (1) a mixture of (a) from about 5 to about 90 percent by weight of a diaryl compound-formaldehyde copolymer resin and (b) from about 95 to about 10 percent by weight of an unsaturated polyester resin, and (2) a polymerizable ethylenically unsaturated liquid monomer. Component (1) normally is present in amounts of from 20 to 75 weight percent based on the combined weights of (1) and (2).
摘要:
A toning composition which employs one or more of the propylene and butylene oxide-based glycol ethers with propylene glycol for removing sebum from the skin of a user without stinging and without dissolving and removing to any significant degree the intercellular lipids critical to the retention of moisture in the skin.
摘要:
The invention relates to novel O,O'-, O,S'- or S,S'-dithiodialkylene-bis(mono- or dihydrocarbyl carbamothioates) and S,S'-dithiodialkylene-bis(mono- or dihydrocarbyl carbamodithioate). The novel compounds of this invention are useful as collectors in the froth flotation of sulfide mineral ores.
摘要:
Poly(.epsilon.-caprolactam) is prepared with less than 3 percent water-extractable material by carrying out the polymerization reaction in a vessel, the interior surfaces of which are coated with an inert adherent coating of an organic polymer.