Abstract:
A SILICON TERMINATED ORGANIC POLYMER COMPRISING A CARBONYL CHLORIDE TERMINATED POLYESTER PREPOLYMER WHEREIN THE CARBONYL CHLORIDE TERMINAL GROUPS HAVE BEEN REACTED WITH AN ORGANOSILICON COMPOUND TO TERMINATE, THAT IS CAP OF ENDBLOCK SAID POLYMERS WITH ORGANOSILICON GROUPS.
Abstract:
A ROOM TEMPERATURE CURABLE SILICON TERMINATED ORGANIC POLYMER COMPRISING AN ISOCYANATE TERMINATED POLYURETHANE PROPOLYMER CONTAINING AT LEAST TWO URETHANE LINKAGES PER POLYMER MOLECULE, WHEREIN THE ISOCYANATE TERMINAL GROUPS HAVE BEEN REACTED WIGH AN ORGANOSILICON COMPOUND TO TERMINATE, THAT IS CAP OR ENDBLOCK SAID POLYMERS WITH ORGANOSILICON GROUPS.
Abstract:
THE MECHANICAL BLENDING OF POLYSULFONES WITH OLIGOMER SULFONE ETHER DIAMINE POLYAMIDE-IMIDES AFFORDS POLYBLENDS HAVING ENVIRONMENTAL STRESS AGING CHARACTERISTICS GREATER THAN THOSE OF THE POLYSULFONES AND IMPROVED PROCESSABILITY OVER THAT OF THE OLIGOMER SULFONE ETHER DIAMINE POLYAMIDE/IMIDES.
Abstract:
POLYSACCHARIDES, METHODS FOR PREPARING SUCH POLYSACCHARIDES AND FLUIDS UTILIZING SUCH POLYSACCHARIDES Water-soluble polysaccharides, including cellulose ethers, containg pendent vicinal dihydroxy structure capable of cis geometry, which upon crosslinking with a polyvalent metal, have shear-thermal stability characteristics of at least about 30 at 250.degree.F., are useful in oilfield applications.
Abstract:
COMPOSITIONS CONTAINING HEMIFORMALS OF PHENOL There are described composites containing from about 20 to about 70 weight percent of a reinforcing material, such as glass, carbon, graphite, or aromatic polyamide fiber, and from about 30 to about 80 weight percent of a thermosetting composition which contains hemiformals of phenol and methylolated phenol and a polymer miscible with the hemiformal. S P E C I F I C A T I O N
Abstract:
A PROCESS FOR PRODUCING A POLYMER WATER-IN OIL EMULSION Described herein is a semi-continuous process for producing a polymer water-in-oil emulsion which process comprises: (a) combining: (i) an aqueous solution comprising at least one water-soluble monomer and (ii) a mixture comprising a hydrophobic liquid, a hydrophobic monomer and an oil-soluble surfactant; (b) homogenizing the mixture from (a) to form a water-in-oil emulsion; (c) deoxygenating said homogenized water-in-oil emulsion; (d) continually adding the homogenized water-in-oil emulsion to a reactor while adding thereto a deoxygenated initiator solution; (e) heating the mixture from (d) under polymerization conditions so as to form a polymer water-in-oil emulsion; and (f) recovering a polymer water-in-oil emulsion. D-13301-C
Abstract:
Latent catalysts comprising the phenyl esters of certain carboxylic acids are disclosed for use in the cure thermosetting resins curable by an acid catalyst.
Abstract:
HIGH-ORTHO PHENOL-FORMALDEHYDE RESOLES CONTAINING HEMIFORMAL GROUPS Disclosed ore high-ortho phenol-formaldehyde resoles having stable hemiformal groups. These resoles are of low viscosity, are essentially free of unbound water and volatile organic compounds. They are curable to phenolic formaldehyde resinous solids and are particularly suitable for use in liquid injection molding processes to form composites.