摘要:
The invention relates to functionalized bimodal butadiene-methylmethacrylate impact modifiers. The impact modifiers are especially useful in blends of engineering resins, particularly where the blend contains both functional and non-functional resins. Polycarbonate (PC)/polyethylene terephthalate (PET) blends using the functionalized bimodal butadiene-methylmethacrylate impact modifiers of the invention have excellent low temperature impact performance.
摘要:
Uniformly-shaped, porous, round beads are prepared by the co-polymerization of an acrylic monomer and a cross-linking agent in the presence of 0.05 to 5% by weight of an aqueous soluble polymer such as polyethylene oxide. Cross-linking proceeds at high temperature above about 50.degree.C or at a lower temperature with irradiation. Beads of even shape and even size distribution of less than 2 micron diameter are formed. The beads will find use as adsorbents in chromatography and as markers for studies of cell surface receptors.
摘要:
Terpolymer of crotonic acid, vinyl acetate and an allyl or methallyl ester having the formula ##EQU1## wherein R' hydrogen or CH.sub.3, R.sub.1 is a saturated hydrocarbon chain containing 1-6 carbon atoms and R.sub.2 is -CH.sub.3 or -CH(CH.sub.3).sub.2, with the proviso that the sum of the number of carbon atoms in R.sub.1 + R.sub.2 is equal to or less than 7. The terpolymer is employed with a cosmetic carrier or vehicle to provide a cosmetic composition for the hair, such as a hair lacquer or hair setting lotion, generally in amounts of about 1-4 weight percent of the composition.
摘要:
A spray process for the deposition of carboxyl-containing adhesive latices as discrete droplets wherein the droplets are maintained as raised, spaced deposits on the substrate for lamination is provided. The adhesive latex is sprayed at a low viscosity but prior to contact with the substrate the viscosity of the latex droplets is increased so that upon striking the substrate the droplets remain as raised, spaced deposits rather than coalescing to form a a continuous adhesive layer or being absorbed by the substrate. Laminates obtained with the present spray process have increased resistance to delamination, good flexibility and hand.
摘要:
A METHOD OF PREPARING COPOLYMERS OF METAL SALTS OF UNSATURATED CARBOXYLIC ACIDS, SUITABLE FOR USE AS A STABILIZER FOR CHLORINE-CONTAINING RESINS, SUCH AS POLYVINYL CHLORIDE, BY MEANS OF PRECIPITATION COPOLYMERIZATION IN AN ALCOHO; SOLUTION CONTAINING WATER. A STABILIZED COMPOSITION COMPRISING A MIXTURE OF SAID COPOLYMERS OF METAL SALTS OF UNSAUTRATED CARBOXYLIC ACIDS AND CHLORINE-CONTAINING RESIN.
摘要:
MINERAL-TANNED LEATHER CAN BE PROVIDED WITH IMPROVED BREAK PROPERTIES AND IMPROVED DYEING CHARACTERISTICS BY THE IMPREGNATION THEREOF WITH CERTAIN NOVEL POLYAMPHOLYTE RESINS.
摘要:
IMPROVEMENT IN THE STABILITY TO WATER OF FOAMED COPOLYMERS OF (A) ACRYLIC OR METHACRYLIC ACID AND (B) ACRYLONITRILE, ACRYLAMIDE, METHACRYLONITRILE OR METHACRYLAMIDE AND, IF DESIRED, (C) ADDITIONAL COMONOMER IN THE PRESENCE OF 3 TO 20 PERCENT UREA OR DIMETHYLUREA BY ADDITION OF 0.01 TO 10% BY WEIGHT OF A CROSS-LINKING AGENT TO THE MONOMER MIX BEFORE COPOLYMERIZATION.
摘要:
A MAJOR PORTION OF A MONOESTER OF ACRYLIC OR METHARYLIC ACID WITH A BI-FUNCTIONAL ALCOHOL WHICH HAS AN ESTERFIABLE HYDROXYL GROUP AND AT LEAST ONE ADDITIONAL HYDROPHILIC FUNCTIONAL GROUP IS COPOLYMERIZED IN AQUEOUS SOLUTION WITH A SMALL AMOUNT OF A DIESTER OF THESE ACIDS AND OF AN ALCOHOL WHICH HAS AT LEAST TWO ESTERIFIABLE HYDROXYL GROUPS UNTIL A SHAPE RETAINING BODY IS OBTAINED.
摘要:
A CORNEAL CONTACT LENS IS MADE BY POLYMERIZING A CATALYZED MIXTURE OF ACRYLATES AND/OR METHACRYLATES OF POLYHYDRIC ALCOHOLS WITH A WATER MISCIBLE SOLVENT IN A MOLD CAVITY HAVING A SPHERICALLY CONCAVE BOTTOM SURFACE AND BEING ROTATED ABOUT AN AXIS PERPENDICUAR TO THAT SURFACE AT A SPEED TO PRODUCE AN EXPOSED CONCAVE SURFACE OF THE
POLYMERIZATION MIXTURE, WHICH IS SUFFICIENTLY DIFFERENT FROM A PARABOLOID SHAPE BECAUSE OF SURFACE TENSION EFFECTS TO HAVE A CENTER EFFECTIVE AS A CORRECTIVE LENS.
摘要:
THE INVENTION RELATES TO A POLYMERIZATION PROCESS EMPLOYING A BISULFITE SALT AS THE INITIATOR AND THE BISULFITE TERMINATED OLIGOMERS FORMED THEREBY. THE OLIGOMERS AND THEIR SALTS ARE USEFUL AS CONDUCTIVE AGENTS.