摘要:
Graft polymers having high impact resistance are produced by polymerizing vinyl monomers in an aqueous emulsion of an olefinic rubber having a low degree of unsaturation, wherein the emulsion also contains an aromatic, aliphatic or cycloaliphatic hydrocarbon liquid stabilizer.
摘要:
Water-soluble graft copolymers of acrylic acid and methyl cellulose, including water-soluble salts thereof, are useful as binders in the agglomeration of finely divided materials. The graft copolymers are especially useful as binders in the pelletization of minerals and ores, such as taconite.
IN WHICH A REPRESENTS A CRYSTALLINE POLYMER BLOCK HAVING A MELTING POINT ABOVE 100*C. AND THE TOTAL AMOUNT OF POLYMER BLOCK A IS FROM 3 PERCENT TO 30 PERCENT BY WEIGHT OF THE BLOCK COPOLYMER AND IN WHICH B REPRESENTS AN AMOUPHOUS POLYMER BLOCK HAVING A GLASS TRANSITION TEMPERATURE NOT GREATER THAN 15*C. AND HAS A VISCOSITY AVERAGE MOLECULAR WEIGHT OF 10,000 TO 600,000 AND N IS AN INTEGAR OF FROM 1 TO 5.
摘要:
CASTABLE COMPOSITIONS OF MATTER COMPRISING (1) A MONOMERIC MIXTURE OF METHLY METHACRYLATE AND DIALLYL PHTHALATE WITH OR WITHOUT COMONOMERS COPOLYMERIZABLE THEREWITH AND (2) A COPOLYMER OF ETHLENE, CASTINGS THEREOF AND A METHOD FOR THE PRODUCTION THEREOF, ARE DISCLOSED.
摘要:
Copolymers essentially composed of a major portion of monomeric units derived from one or more monomers which are free from ethylenic unsaturation, have at least three carbon atoms and have a polymerizable thiiranyl group; and a minor portion of monomeric units derived from one or more monomers having both a polymerizable thiiranyl group and a polymerizable ethylenically unsaturated group are disclosed. The monomers free from ethylenic unsaturation may be, for example, ethylene sulfide, propylene sulfide, the 1,2- and 2,3-butylene sulfides, vinyl cyclohexane sulfide, 2-benzyl thiirane, paramethyl styrene episulfide, styrene sulfide, cyclohexene episulfide, and isobutylene sulfide. The ethylenically unsaturated monomers may be, for example, allylthioglycidyl ether, thioglycidyl acrylates, thioglycidyl alkacrylates such as thioglycidyl methacrylate, vinyl cyclohexene episulfide, and butadiene monoepisulfide. The monomers are polymerized through the thiiranyl groups thereof. The copolymers can be cured through the ethylenically unsaturated groups thereof to produce elastomers having good physical properties and solvent resistance.
摘要:
A COATING RESIN AND THE PROCESS FOR PREPARATION IT COMPRISING THE STEPS OF: (1) REACTING 30% TO 60% OF A DRYING OIL, AT LEAST 5% OF THE OIL CONTAINING CONJUGATED CONJUGATED DOUBLE BONDS, E.G., SAFFLOWER OIL, DEHYDRATED CASTOR OIL, WITH 2% TO 25% OF AN ALIPHATIC POLYHYDRIC ALCOHOL, E.G., GLYCEROL, PENTAERYTHRITOL; AND THEN (2) ADDING AND REACTING UP TO 30% BY WEIGHT OF AN ORGANIC POLYISOCYANATE, E.G., TOLUENE DIISOCYANATE, 4,4''-METHYLENE-BIS(CYCLOHEXYLISOCYANATE); AND THEN (3) ADDING AND ADDITION POLYMERIZING 15% TO 60% OF AN ETHYLENICALLY UNSATURATED MONOMER, E.G., STYRENE, VINYL TOLUENE; ALL PERCENTAGES BASED ON THE SOLID WEIGHT OF THE PRODUCT.
摘要:
GRAFT COPOLYMERS ARE FORMED BY REACTING A NATURALLY OCCURING POLYHYDROXY BASE POLYMER, SUCH AS CELLULOSE, WITH AN N-3-OXOHYDROCARBON-SUBSTITUTED ACRYLAMIDE SUCH AS DIACETONE ACRYLAMIDE IN THE PRESENCE OF A FREE RADICAL CATALYST, PREFERABLY A SALT OF PERIODIC ACID OR A CERIC SALT. THE GRAFTING OPERATION MODIFIES THE PROPERTIES OF THE BASE POLYMER.