Class / Patent application number | Description | Number of patent applications / Date published |
525267000 | Including step of preparing a polymer in the presence of a specified material and in the absence of a preformed polymer derived from ethylenic reactant only | 11 |
20090306301 | CAST ACRYLIC PLATES WITH ENHANCED SHOCKPROOFNESS - Process for the preparation of impact-strengthened cast PMMA sheets comprising the following stages:
| 12-10-2009 |
20110112253 | AMPHIPHILIC BLOCK COPOLYMER FORMULATIONS - The invention relates to an amphiphilic block copolymer having an increased speed of water adsorption. The non-water soluble copolymer, having a hydrophilic middle block and hydrophobic endblocks, has a high rate water transmission and/or permeation. The increase in rate is due to neutralization, or partial neutralization of the hydrophilic block of the copolymer. Furthermore, the absorption rate can be controlled by the extent of the neutralization. Another aspect of the invention is the use of co-monomers and/or additives to further increase or tailor the water absorption properties. The use of additives and comonomers is also shown to enhance the processability of the disclosed polymer composition. | 05-12-2011 |
20110144275 | Zwitterionic Block Copolymers and Methods - Zwitterionic block copolymers having oppositely charged or chargeable terminal groups, and methods of making and using the same, are disclosed. The zwitterionic block copolymers can undergo microphase separation. | 06-16-2011 |
20110294958 | Method Of Forming A Non-Random Copolymer - A non-random copolymer is formed, and its structure controlled, using a method including the step of combining a mixture of a first radical polymerizable compound and an organoborane initiator, a second radical polymerizable compound, and an organoborane decomplexing agent, at a rate sufficient to form the non-random copolymer. The non-random copolymer may be a silicon gradient polymer. To form the silicon gradient copolymer, the first and second radical polymerizable compounds are polymerized in the presence of the organoborane initiator and the organoborane decomplexing agent. The silicon gradient copolymer has a polymer backbone consisting of organic moieties and has at least one silicon containing pendent group. | 12-01-2011 |
20120116023 | METHOD FOR CONTROLLING ANIONIC POLYMERIZATION - This invention deals with an approach to control anionic polymerization. The anionic polymerization is conducted by adding a kind of initiator ligand compound, directly or in the form of solution into the monomer or initiator at the same or different time, or at different stages. The metal atoms in the ligand can form the association with the initiator cations, while the alkyloxy groups in the intiator ligand can restrict the entering channel of the addition of the monomers due to their relatively large volume or steric hindrance. Therfore, the initiator ligand compound can restrict the rate of anionic polymerization, restrain the side reaction, and make the anionic polymerization possible to be conducted at room or even higher temperature. | 05-10-2012 |
525268000 | Specified material contains a transition metal atom | 5 |
20120245298 | Amphiphilic Block Polymers Prepared by Alkene Metathesis - The invention relates to a multiblock polyolefin, and methods to make a multiblock polyolefin, represented by the formula (X) or (XII): | 09-27-2012 |
20130137830 | Functionalized High Vinyl Terminated Propylene Based Oligomers - This invention relates to a functionalized co-oligomer having an Mn of 300 to 30,000 g/mol comprising 10 to 90 mol % propylene and 10 to 90 mol % of ethylene, wherein the oligomer has at least X % allyl chain ends, where: 1) X=(−0.94 (mole % ethylene incorporated)+100), when 10 to 60 mole % ethylene is present in the co-oligomer, and 2) X=45, when greater than 60 and less than 70 mole % ethylene is present in the co-oligomer, and 3) X=(1.83*(mole % ethylene incorporated)−83), when 70 to 90 mole % ethylene is present in the co-oligomer. This invention also relates to a functionalized homo-oligomer, comprising propylene, wherein the oligomer has: at least 93% allyl chain ends, an Mn of about 500 to about 20,000 g/mol, an isobutyl chain end to allylic vinyl group ratio of 0.8:1 to 1.2:1.0, and less than 100 ppm aluminum. This invention also relates to a process of making functionalized homo- or co-oligomer, comprising propylene, wherein the productivity is greater than 4500 g/mmol Hf (or Zr)/hour. | 05-30-2013 |
525269000 | Transition metal is other than Group IVB, VB, or VIB metal atom | 3 |
20120083576 | Process for the Preparation of Impact Resistant Propylene Polymer Compositions - A process for the preparation of propylene polymer compositions carried out in the presence of a catalyst system comprising (a) a solid catalyst component having average particle size ranging from 15 to 80 μm comprising a magnesium halide, a titanium compound having at least a Ti-halogen bond and at least two electron donor compounds one of which being present in an amount from 50 to 90% by mol with respect to the total amount of donors and selected from succinates and the other being selected from 1,3 diethers, (b) an aluminum alkyl and optionally (c) an external electron donor compound, and comprising the following steps:
| 04-05-2012 |
20140179874 | HYPERBRANCHED POLYETHYLENES AND A PROCESS FOR MAKING - A process for making a hyperbranched polyethylene. The process has the steps of (a) reacting a multifunctional acrylate monomer with an α,ω-diene monomer in the presence of a first catalyst to form an alternating acrylate/diene copolymer and (b) reacting the alternating acrylate/diene copolymer with a late transition metal α-diimine catalyst to form a multi-nuclear initiator for chain walking polymerization of ethylene. There is also a process for forming a multi-nuclear initiator. There is also a hyperbranched polymer, | 06-26-2014 |
20150094428 | SYNTHESIS OF CHLOROTRIFLUOROETHYLENE-BASED BLOCK COPOLYMERS BY IODINE TRANSFER POLYMERIZATION - Methods for the synthesis of CTFE-based block copolymers through iodine transfer polymerization are disclosed. In an exemplary embodiment, a method includes reacting a fluoromonomer “M” with a chain transfer agent of the formula X—Y or Y—X—Y, wherein X represents a C | 04-02-2015 |
525271000 | Specified material contains a Group IA atom in elemental form or bonded to hydrogen or carbon | 1 |
525272000 | Contains an atom other than Group IA, C, or H | 1 |
20110319568 | COPOLYMER RUBBER HAVING A STAR-SHAPED BLOCK STRUCTURE, THE PREPARATION PROCESS AND USE THEREOF - Provided is a copolymer rubber, comprising a copolymer having a star-shaped block structure (SIB-PA) | 12-29-2011 |