All rights reserved. Login Sign up. Search Expert Search Quick Search. Additive for polymers and process for preparation thereof. United States Patent The invention concerns a process for preparing an additive for polymers, the additive itself and the use of the additive for improving the surface properties of polymers. Click for automatic bibliography generation. Download PDF English Abstract of WO , Dec. The invention claimed is: 1.
A process for the production of an additive for polymers, comprising: a. Na 2 SiO 3 is added in an amount of 0. A process according to claim 1, wherein the process steps a , b , and c are respectively carried out over a period of 50 to 70 minutes. A process according to claim 1, wherein the product of process step c is subjected to a further process step of coating with an organic coating agent, wherein the organic coating agent is selected from the group consisting of crosslinking agents, dispersing agents, deflocculation agents, and mixtures thereof.
A process according to claim 4 wherein the organic coating agent is selected from the group consisting of alkali metal salts of organic acids, inorganic or organic polyphosphates, poly meth acrylates, polyethers, anionically modified polyethers, fatty alcohol polyglycol ethers, polyhydric alcohols, modified polyurethanes, anion-active aliphatic esters, and mixtures thereof. A process according to claim 6, wherein the alkali metal salts of organic acids comprise a salt of poly meth acrylic acid, acetic acid, or citric acid.
A process according to claim 4, wherein the organic coating agent comprises alkali metal or alkaline earth metal salts of acrylate or methacrylate copolymers. A process according to claim 6, wherein the polyphosphates comprise potassium polyphosphate or poly meth acrylate phosphates. A process according to claim 1, wherein the product of process step d is subjected to a grinding step. An additive for polymers which is obtained according to the process of claim 1. A polymer comprising an additive according to claim A polymer according to claim 15, wherein the additive is present in a range of to 10, ppm with respect to a finished product.
A film comprising a polymer according to claim A polymer fiber comprising an additive according to claim A coating agent comprising an additive according to claim A coating agent according to claim 19, wherein said coating agent comprises a Printed Circuit Board ink. This application is a U. The invention concerns a process for the production of an additive for polymers, the additive itself and the use of the additive for improving the surface properties of polymers, in particular in the form of films, fibres and lacquers.
