Abstract: Filled thermoplastic compositions have a lower melt index than do the virgin resins, leading to problems in molding. The melt index of the filled resin can be raised by the addition of 3-12 wt.% atactic polypropylene.

Abstract: A method for preparing foams of chlorinated vinyl chloride polymers is provided. The foams are prepared by impregnating the chlorinated vinyl chloride polymer with an aliphatic alcohol of from 1 to 5 carbon atoms and thereafter heating the impregnated polymer.

Abstract: A cement for attaching covering to walls, floors and similar bases includes an adhesive substance which may be glue or a synthetic adhesive and a filler material which may be powdered glass or quartz and which has the property of not interacting with the adhesive nor to be dissolved therein and to adhere to the adhesive substance only slightly or not at all. When the layer of cement dries after attachment, e.g., of the wall covering to the wall, the covering may subsequently be removed therefrom by simply pulling and without damage to either the base or the covering, because the cement splits into two separate layers, one of which remains on the base and the other of which remains on the covering being removed. In another embodiment, a layer of cement is applied to the covering and then dried. For attachment of the covering to the base, another layer of either splittable or non-splittable cement is applied to the layer of dried cement already present.

Abstract: Polystyrene (copolymer) foam is produced by forming a polystyrene (copolymer) solution in an hermetically sealed container using a solvent having a high vapor pressure and a low boiling point, and progressively releasing the thus formed solution under temperature and pressure conditions allowing rapid evaporation of the solvent.

Abstract: An aqueous size composition is disclosed. The composition is particularly suited for application to glass fibers, and consists essentially of an emulsified epoxy resin, a gamma-methacryloxypropyltrialkoxy silane wherein the alkoxy group has from 1 to 3 carbons, a polyethylene glycol monostearate, a polyvinylpyrrolidone, a water dispersible powder of disintegrated beta-1,4-glucan material and sodium carboxymethyl cellulose dispersed therein and an organic acid in an amount sufficient to provide a pH from 3 to 6.

Abstract: This invention relates to the recovery of oil from underground deposits. The invention relates to novel gel compositions consisting of water, a polysaccharide polymer, an acid generating salt and a melamine resin. The invention also relates to the method of utilizing said composition to recovery underground oil.

Abstract: A novel carrier composition for corrugating adhesives contains 1 part amylaceous material, about 3 to 5 parts water, and about 0.5 to 4 parts urea. The carrier is self-gelling at room temperature, and lowers the gel temperature of the adhesive paste to within the optimal range for use in making corrugated paperboard. The carrier is especially well-suited for use in acidic adhesive systems since its effect on the gelatinization temperature of the raw starch component is independent of pH.

Abstract: Film forming starch-hydrolyzed polyacrylonitrile graft copolymer and latex composition.

Abstract: A polyester size composition for synthetic fibers useful in protecting the fibers from abrasion during the weaving process or to improve the adhesion to the fibers of conventional size compositions and especially useful with polyester fibers such as those based upon polyethylene terephthalate, comprises a branched water-dispersible polyester which is the reaction product of at least one polycarboxylic acid, at least one diol or polyglycol and an aromatic carboxylic acid containing a --SO.sub.3 M grouping which is attached to the aromatic nucleus of said carboxylic acid through an aliphatic chain and ester linkage and wherein said linkage contains about 2 to about 8 carbon atoms.

Abstract: A series of novel amphoteric graft copolymers of xanthomonas hydrophilic colloid and partially N-aminoalkylated acrylamide has been prepared by reacting the corresponding acrylamide copolymer with an alkyl amine and an active aldehyde. The new copolymer is cationized via acidification or quaternization, and is reverted to its anionic form via basification.

Abstract: Water-absorbent starch products may be prepared by simultaneously drying and polymerizing an aqueous media containing starch, ethylenic unsaturated monomer and free-radical initiator. Without necessitating further refining or chemical modification, effective water-absorbent, drum-dried products essentially free from water-soluble salts and free-radical initiator contaminants and containing a high level of functional water-attractant groups may be directly manufactured. If desired, the water-absorbent starch products may be further refined to increase the water-absorbent properties of the starch polymer.

Abstract: A novel starch ether derivative of which the crosslinking properties may be altered by adjusting the pH of the cook is prepared by reacting under controlled conditions a starch base in aqueous medium with an N-(alkoxymethyl)acrylamide wherein the alkoxy group contains 1-4 carbon atoms, and is preferably an isobutoxy group. The starch derivatives herein may be used as insolubilizing or strengthening agents in adhesives, coatings, and in other applications wherein controlled crosslinking is desirable.

Abstract: The dispersibility of cotton filter fly in an elastomeric composition is greatly improved by applying point contact compressive force to the filter fly prior to mixing it into the elastomer.

Abstract: Paper and other cellulose materials are sized with a cationic starch prepared by forming an aqueous slurry of a lightly oxidized starch, adding a cationizing agent to the slurry and then heating the slurry in a continuous cooker.

Abstract: A size composition for use in the treatment of glass fibers as reinforcement for paper wherein the size composition is formulated of starch, a polyolefin emulsion and a lubricant and/or emulsifier. The composition can also be formulated to include a wax. Glass fibers treated with the size composition of the invention have a reduced "fuzz" content as well as improved processing characteristics.

Abstract: A two-step process for achieving a covalent bond between latex polymers and immunological substances, the first of which involves reacting latex particles having a reactive carboxyl group with a diamine in the presence of an appropriate carbodiimide as the condensing agent. The resulting product, which can be designated as the modified latex, is an amide terminating in primary or secondary amino groups. This product is then reacted with the appropriate immunological reagent such as an antigen or antibody modified if necessary to contain amino groups, in the presence of a bifunctional aldehyde to result in the condensation of the amino groups of the immunological reagent to the amino groups of the modified latex via an intermediate aldehyde bridging moiety.

Abstract: This invention relates to a composition comprising a blend of a copolyester, a polyisocyanate and a compatible organic polymer, the ratio by weight of polyester to polymer being within the range of from about 20 : 1 to 0.5 : 1 by weight. The invention also relates to a laminate including the novel composition.

Abstract: This invention is directed to a new thermal stabilizer system for cellulose esters and their commercially useful formulated compositions which can be molded, shaped and otherwise processed in a thermoplastic condition at elevated temperatures to provide products having (1) better molecular weight retention and (2) less discoloration after thermal processing when compared to similar cellulose ester compositions containing prior art stabilizers.

Abstract: This invention provides a liquid, polymerizable composition of matter, suitable for molding fibrous reinforced articles with exceptionally smooth surfaces, said composition being curable under heat and pressure to form a rigid, cured product which is characterized by an optically heterogeneous appearance. The composition comprises a thermoplastic cellulose ester, and .alpha.,.beta.-ethylenically unsaturated polymerizable polyester having a molecular weight per double bond factor of 150 to 186, and a monomer containing a CH.sub.2 .dbd.C< group copolymerizable with the unsaturated polyester.

Abstract: A mass of alloy fibers of polyacrylic acid salt of alkali-metals or ammonium and regenerated cellulose, useful for absorbing fluids, are prepared by mixing a caustic solution of polyacrylic acid with viscose, spinning the mixture into fibers and obtaining dry fibers in the alkaline state. The fibers are advantageously dried with an alkaline lubricating finish thereon and then processed into dressings, sanitary napkins, tampons and diapers.