Abstract:
COMPOSITIONS USEFUL AS ADHESIVES HAVING IMPROVED BONDING CHARACTERISTICS ARE PREPARED FROM NATURAL OR SYNTHETIC RUBBER BINDERS AND A DIPHENYLMETHANE TETRAISOCYANATE DERIVATIVE.
Abstract:
New organosilyl- and carbamate-modified urea derivatives have the formula IN WHICH R and R'' are monovalent hydrocarbon radicals, R'''' and R'''''' are hydrogen atoms or monovalent hydrocarbon radicals, Q'' is a bivalent hydrocarbon radical, Q is a monovalent to hexavalent hydrocarbon radical, a is 0, 1, 2 or 3, n is 2, 3 or 4, b is zero or an integer from 1 to 200, and c is the valency number of Q. These urea derivatives are prepared by reacting at a temperature of from -20* to 150* C an aminoalkyl-silane derivative of the formula WITH AN ISOCYANATE-MODIFIED CARBAMIC ACID ESTER OF THE FORMULA The products are to be used as priming agents imparting adhesion to synthetic resins on siliceous surfaces, as surfactants and as intermediates for organo-polysiloxane resins.
Abstract:
a-Pyridyl, a-pyrimidyl and a-pyrazinyl isocyanates which contain electronegative substituents in the ring are prepared by reacting the corresponding amino compounds with oxalyl chloride. Due to the high reactivity of the -NCO group these compounds are particularly useful as cross linking agents and modifiers for compounds containing Zerewitinoff-active hydrogen.
Abstract:
SULFUR FREE ESTERS AND/OR AMIDES OF ACIDS OF PHOSPHORUS WHICH CONTAIN AT LEAST ONE GROUP HAVING THE FORMULA ROCH2NHCO-, WHEREIN R IS ALKYL, USEFUL AS ADDITIVES FOR RESINS TO IMPACT FLAME-RESISTANCE.
Abstract:
N-HYDROCARBYL-N-ISOCYANATOMETHYL-CARBAMIC ACID ESTERS AND THEIR PREPARATION BY REACTION OF N-HYDROCARBYLN-HALOMETHYLCARBAMIC ACID ESTERS WITH METAL CYANATES.
Abstract:
LACQUERS SUITABLE FOR MOTOR VEHICLES AND THE LIKE ARE PREPARED FROM MIXTURES OF POLYACRYLATE RESINS CONTAINING HYDROXYL GROUPS AND N-ALKOXYMETHYLURETHANES. THE ALKOXYMETHYTLURETHANES BRING ABOUT THE CROSS-LINKING OF THE POLYACRYLATE RESIN. IN ADDITION TO THE ABOVE MENTIONED INGREDIENTS, MELAMINE FORMALDEHYDE OR UREA FORMALDEHYDE RESINS MAY BE USED JOINTLY WITH THE N-ALKOXYMETHYLURETHANES.
Abstract:
This invention discloses a silyl-substituted urea derivative of controlled reactivity, high storage stability and which improve the properties of the cross-linked end products obtained by the prior art. The silyl-substituted urea comprises the general formula:
WHEREIN R represents a C1-C18 alkyl, C4-C14 cycloalkyl or a phenyl radical, R'' represents a C1-C10 alkyl, C4-C10 cycloalkyl or C6-C10 aryl radical which may be halogenated or cyano-substituted, R'''' represents a hydrogen atom or a methyl or phenyl radical; R'''''' represents a hydrogen atom or a C1-C18 alkyl, C4-C14 cycloalkyl or C6-C14 aryl radical which may be halogenated or cyano-substituted; Q'' represents an alkyl radical containing from 4 to 12 carbon atoms with a valency of (b + 1) or a C4-C14 cycloalkyl, C7-C15 arylalkyl, C6-C14 aryl or C8 alkylaryl radical, all of which radicals have a valency of (b + 1); Q represents a c-valent radical which has been obtained by the removal of C HX groups from a compound with a molecular weight of 200 to 150,000, preferably from 4000 to 80,000, which contains ester, amide, urethane, thioether, acetal, urea, hydrazodicarbonamide, hydrazide and/or carbonate groups and may also contain additional ether groups; A 0, 1 OR 2; B 1 TO 7, PREFERABLY 1 OR 2; C 1 TO 8, PREFERABLY 2 OR 3 AND X O, S, NH or N-Y- (Y C1-C8 alkyl radicals).