摘要:
Acido-basic properties of a system containing a polymer obtained by decomposing by oxidative cleavage of a carbon-carbon double bond, and a trifunctional molecule having an alkoxysilyl group in the structure as represented by the formula (A) are changed such that the system is changed into a basic system when the system is acidic and the system is changed into an acidic system when the system is basic to combine the decomposed polymer and the trifunctional molecule, thereby introducing the alkoxysilyl group into the main chain. Furthermore, acido-basic properties of a system containing a polymer obtained by decomposing by oxidative cleavage of a carbon-carbon double bond to decrease the molecular weight, and a functional molecule having an alkoxysilyl group as represented by the formula (a) are changed in the same manner as above to combine the decomposed polymer and the functional molecule, thereby introducing the alkoxysilyl group in a molecular terminal.
摘要:
The present invention relates to a process for the preparation of dimethylketene (DMK) and then of polydimethylketene (PDMK) by polymerization of DMK. More specifically, the DMK is obtained by pyrolysis by isobutyric anhydride (IBAN), the latter decomposing under the effect of heat (pyrolysis) to give isobutyric acid (IBA) and DMK. One mole of pyrolyzed IBAN gives one mole of IBA and one mole of DMK.
摘要:
The present invention is directed to a process for producing a polymeric alkyl-aryl alcohol resin, and to resins produced by the process of the invention. In the process of the invention (which uses a Meerwein-Pondorff-Verley reduction), a mixture of a polymeric alkyl-aryl ketone resin and a metal alkoxide reducing agent is combined in a solvent. The mixture is refluxed to form a polymeric metal alkoxide intermediate and a ketone (which is removed from the mixture to allow the reaction to go to completion). The solvent reacts with the metal alkoxide intermediate to form a polymeric alkyl-aryl alcohol. Preferably, the metal alkoxide reducing agent is aluminum isopropoxide, and the solvent is isopropyl alcohol, the use of which may result in the regeneration of the aluminum isopropoxide when the polymeric alkyl-aryl alcohol is formed. The invention is also directed to a process for making a non-aqueous ink and to inks formed with the process of the invention. In the process, a polymeric alkyl-aryl alcohol, as described above, is formed, and blended with at least one solvent, a novalac resin, a lubricant, such as a sesquloleate, and a pigment to form the ink. Useful ink solvents include, but are not limited to, glycols, glycol ethers, cyclic amides, alcohols, and mixtures thereof.
摘要:
An aqueous emulsion comprising at least one (co)polymer is provided. The (co)polymer is derived from a monomer having formula (1):(R.sub.1 R.sub.2 C.dbd.CR.sub.3 --CO--L--).sub.q A(--NCOblock).sub.p(1)wherein R.sub.1, R.sub.2, and R.sub.3, which are the same or different, represent a hydrogen or a group selected from hydrocarbon chains comprising 1 to 12 carbon atoms, halogens, and electron-withdrawing functional groups; L, which is the same or different, represents a divalent hydrocarbon radical comprising 2 to 12 carbon atoms; A represents an organic backbone which has n free valencies, n is a number between 2 and 7, and is equal to p+q; NCOblock represents a protected isocyanate functional group; p is a number between 1 and 6; and q is a number between 1 and 6.
摘要:
Included are monoadduct monomers made from divinyl ketones wherein only one vinyl bond therein has added to it a nucleophilic precursor. Nucleophilic precursors include phenols, thiols, secondary amines, amino acids, hydrocarbyl phosphites and phosphite esters, organic bis(phosphonites, the bisulfite anion and others.Polyadduct polymers made from the monoadduct monomers. The polyadduct polymers may be homo- or copolymers and may contain a pendant nucleophile residue.
摘要:
Disclosed herein is a polymer comprisingA. from about 1 to 100% by weight of a polymerized monomer containing at least one active methylene group and having the formula ##EQU1## wherein n is 0 or 1, R is hydrogen or methyl, R' is substituted or unsubstituted arylenethylene having the structure ##EQU2## wherein Ar is arylene, R.sup.2 is hydrogen, alkyl, aryl, or cycloalkyl, R.sup.3 is alkoxy or amino when n is equal to 0, and R.sup.3 is alkyl, alkoxy, amino, cycloalkyl or aryl when n is equal to 1; andB. from 0 to about 99% by weight of at least one additional polymerized ethylenically unsaturated monomer.
摘要:
Acrolein together with acrylic acid as an optional reactant is polymerized in a heated, moving aqueous hydrogen peroxide solution by gradually adding monomers and n-dodecyl mercaptan to the solution. The resultant polymer exhibits improved biological degradability making it especially useful in detergents.
摘要:
VINYL KETONES ARE POLYMERIZED IN THE PRESENCE OF A CATALYST FORMED BY AN ORGANOALUMINUM COMPOUND AND A METAL SALT OF AN ORGANIC ACID OR A BETA-DIKETONE. WATER CAN BE ADDED TO THE POLYMERIZATION SYSTEM. IN ADDITION, THE VINYL KETONES CAN BE COPOLYMERIZED WITH ALKENE OXIDES.