Abstract: The production of undesirable oligomeric cyclic ethers in the preparation of polyether glycols is reduced by using as a catalyst an acid-activated montmorillonite clay which contains, per gram, 0.1 to 0.9 milliequivalent of hydrogen ions having pK.sub.a values of -3 to -8.

Abstract: Resistance to thermal shock of certain anhydride cured epoxy resins is unexpectedly enhanced by addition of certain polyether dihydroxyalkyl carbamate additives. This superior resistance does not appreciably compromise heat deflection properties. The resins comprise a vicinal polyepoxide, a curing amount of a certain bicyclic anhydride and an effective amount of a polyether dicarbamate having terminal hydroxyalkyl carbamate groups and a molecular weight of from about 2000 to about 3000.

Abstract: Polyhydroxypolyether resins are prepared by reacting in water as a dispersion an epoxide compound which has more than one 1,2-epoxy group per molecule with a dihydric phenol. The reaction is conducted in the presence of a nonionic dispersant at a temperature of about 80.degree. C. to about 100.degree. C. using, as a catalyst, an organic phosphine, a tertiary amine, or a quaternary ammonium or phosphonium compound. The polyhydroxypolyether resins are useful in coating compositions, molding compounds, encapsulating compositions, adhesives and the like.

Abstract: The adhesion properties of amine-cured epoxy resins are unexpectedly enhanced by addition of certain di-hydroxyalkyl carbamate terminated polyether additives. The adhesively superior epoxy resin composition comprises a vicinal polyepoxide, a curing amount of an amine curing agent, and an effective amount of a polyether dicarbamate having terminal hydroxyalkyl carbamate groups and a molecular weight of from about 2000 to about 3000.

Abstract: Adducts of epoxy compounds with amino-substituted aromatic carboxylic acids are described. These carboxyl-containing adducts may be cured with conventional epoxy curing agents or solubilized to prepare aqueous coating systems.

Abstract: Rubbery bladders are produced by rotational casting a liquid polymer composition containing (1) an epoxy resin, (2) a liquid carboxyl-terminated polymer, (3) an amine, (4) a dihydric compound, and (5) a plasticizer. In order to obtain the desired flex and tear properties, the equivalent ratio of the other reactants to epoxy must be from about 0.70 to about 1.15. The valve area of the bladder is reinforced with a spun bonded fabric.

Abstract: Resistance to thermal shock of certain anhydride cured epoxy resins is unexpectedly enhanced by addition of certain polyether diureide additives. This superior resistance does not appreciably compromise heat deflection properties. The resins comprise a vicinal polyepoxide, a curing amount of a certain bicyclic anhydride and an effective amount of a polyether diureide having terminal ureido groups and a molecular weight of from about 2,000 to about 3,000.

Abstract: A catalyst system comprising (I) an organoaluminum compound, (II) an organophosphine compound, and (III) a metal salt of a beta-diketone, is effective to homopolymerize an alkene oxide, homopolymerize an ester of acrylic or methacrylic acid or certain other vinyl monomers, or to copolymerize an alkene oxide with an ester of acrylic or methacrylic acid or certain other vinyl monomers. Suitable vinyl monomers include vinyl esters, vinyl ethers, or vinyl ketones.

Abstract: A novel process for polymerization or copolymerization of monomers is described, according to which the reaction is carried out in the presence of an anionic initiator and a macroheterocyclic complexing agent of formula ##STR1## in which: EACH R.sub.1 is a hydrogen atom, a hydrocarbon group or an alkoxycarbonyl group, or the two R.sub.1 together can form a group of the general formula: ##STR2## THAT IS TO SAY FORMING A THIRD BRIDGE BETWEEN THE TWO NITROGEN ATOMS IN THE MOLECULE, A is a hydrocarbon group,D is an oxygen or sulfur atom or a hydrocarbon group, with the proviso that at least two of the groups D are oxygen or sulfur atoms and that, if each R.sub.1 is hydrogen, a hydrocarbon group or an alkoxycarbonyl group, one of these two groups D is oxygen or sulfur and the other is oxygen,n and p are integers ranging from 1 to 3, andm is 2 or 3.

Abstract: The adhesion properties of amine-cured epoxy resins are unexpectedly enhanced by addition of certain amino terminated polyether succinimide additives. The adhesively superior epoxy resin composition comprises a vicinal polyepoxide, a curing amount of an amine curing agent, and an effective amount of a polyether succinimide having terminal amino groups and a molecular weight of from about 4000 to about 4500.

Abstract: The adhesion properties of amine-cured epoxy resins are unexpectedly enhanced by addition of certain amino terminated polyether ureylene additives. The adhesively superior epoxy resin composition comprises a vicinal polyepoxide, a curing amount of an amine curing agent, and an effective amount of a polyether ureylene having terminal amino groups and a molecular weight of from about 4000 to about 4500.

Abstract: Two-part polymerizable compositions are described which contain (a) organic material having epoxide functionality, (b) organic material having hydroxyl functionality, and (c) a catalyst comprising highly fluorinated aliphatic sulfonyl protonic acid or a compound capable of liberating such acid. The compositions polymerize essentially completely at room temperature (or at slightly elevated temperatures). The polymerized compositions have desirable dielectric properties and are therefore especially useful for potting electrical components.

Abstract: To accelerate the curing of epoxide resins by particular curing agents, i.e., polyamines, polyaminoamides, polycarboxylic acids, or polycarboxylic acid anhydrides, there is employed an aliphatic or araliphatic monocarboxylic acid group at least two halogen atoms chosen from fluorine and chlorine atoms, or a salt thereof, such as magnesium trifluoroacetate and magnesium trichloroacetate.

Abstract: An improved method of bonding is disclosed using an epoxy resin composition which incorporates a select group of chlorine-containing polyols.

Abstract: A synthetic resin product which may be used for gluing wood products and the like comprises a lignin and a low molecular weight liquid which is capable of penetrating, swelling and reacting with the lignin to form a hardened product. The low molecular weight liquid may be a solution consisting essentially of formaldehyde and phenol and may also contain an acid or alkaline hardener. Examples of acid hardeners include ammonium chloride, paratoluene sulphonic acid and the like, whereas examples of an alkaline hardener include sodium carbonate, sodium hydroxide, ammonium hydroxide and the like. The formed resin product is very suitable as an adhesive and utilizes lignin not ordinarily suitable as an adhesive and generally regarded as a waste material.

Abstract: Resistance to thermal shock of certain anhydride cured epoxy resins is unexpectedly enhanced by addition of certain polyether diamide additives. This superior resistance does not appreciably compromise heat deflection properties. The resins comprise a vicinal polyepoxide, a curing amount of certain bicyclic anhydride and an effective amount of a polyether diamide having terminal amido groups and a molecular weight of from about 2000 to about 3000.

Abstract: A highly cross linkable methylolated kraft lignin resin for use as a high wet strength adhesive and the like, in which premethylolated kraft lignin of kraft or soda black liquor is combined with a phenolic cross linking agent, which is optionally methylolated, at a pH in the range of pH 4 to pH 7. The lignin is methylolated under alkaline conditions and then may either be acidified to provide an aqueous dispersion or dissolved in a fugitive base such as ammonium hydroxide so as to be brought into close association with the mutually soluble phenolic cross linking agent. The resin is cross linked by conventional heat curing techniques.

Abstract: The modified advanced epoxide resins described, having an average molecular weight of up to 50,000, can be photopolymerized without the need to include photosensitizers. They may be prepared by reaction of a diepoxide ##STR1## with a keto group-containing dihydric phenol ##STR2## to form the advanced epoxide resin ##STR3## followed by condensation with an aldehyde RCHO to yield ##STR4## In the above formulae, R is an organic group which preferably has ethylenic unsaturation or heterocyclic aromaticity in conjugation with the indicated ethylenic double bond; R.sup.1 is the divalent residue linking two epoxide groups; R.sup.2 is preferably a hydrogen atom but may be an organic group, halogen, or cyano; R.sup.3 is a trivalent aromatic or heterocyclic group, especially a group ##STR5## If desired, other dihydric phenols can be employed with that containing a keto group, and condensation with the aldehyde may be carried out so that only some groups --COCH.sub.2 R.sup.2 undergo reaction.

Abstract: Epoxy resin compositions having extended reactivity (gel time) are prepared by adding phosphate or phosphite compounds to epoxy resin-dicyandiamide-tertiary amine curing systems. Such compositions are useful in preparing glass fiber laminates and powder coatings.

Abstract: The adhesion properties of amine-cured epoxy resins are unexpectedly enhanced by addition of certain polyether diureide additives. The adhesively superior epoxy resin composition comprises a vicinal polyepoxide, a curing amount of an amine curing agent, and an effective amount of a polyether diureide having terminal ureido or monosubstituted ureido groups and a molecular weight of from about 2000 to about 3000.