Abstract: Novel polymers having a linear backbone which is free from both branching and cross-linking, comprising quaternized nitrogen atoms linked to each other through trimethylene groups. By the term "linear backbone" is meant that the polymer has only acyclic groups, i.e. trimethylene, linking the nitrogen atoms in a single continuous chain; the polymer is free from "branching" when it has no repeating monomer units extending from the polymer backbone; and it is free from "cross-linking" when there is no joining of two linear backbones. These polymers are useful as antimicrobials, flocculating agents, antistatic agents, electroconductive agents for coating paper, chelating agents and bile acid binding agents, as well as in similar applications where their high charge to weight ratio and fully accessible nitrogen atoms can be employed. The polymers are obtained by the polymerization of dihydro-oxazine, reductive alkylation of the resulting polymer, followed by quaternization.
Type:
Grant
Filed:
April 11, 1979
Date of Patent:
August 12, 1980
Assignee:
Merck & Co., Inc.
Inventors:
Arthur F. Wagner, Nathaniel Grier, Tsung-Ying Shen
Abstract: Novel polymers having a linear backbone which is free from both branching and cross-linking, comprising quaternized nitrogen atoms linked to each other through trimethylene groups. By the term "linear backbone" is meant that the polymer has only acyclic groups, i.e. trimethylene, linking the nitrogen atoms in a single continuous chain; the polymer is free from "branching" when it has no repeating monomer units extending from the polymer backbone; and it is free from "cross-linking" when there is no joining of two linear backbones. These polymers are useful as antimicrobials, flocculating agents, antistatic agents, electroconductive agents for coating paper, chelating agents and bile acid binding agents, as well as in similar applications where their high charge to weight ratio and fully accessible nitrogen atoms can be employed. The polymers are obtained by the polymerization of dihydro-oxazine, reductive alkylation of the resulting polymer, followed by quaternization.
Type:
Grant
Filed:
April 11, 1979
Date of Patent:
June 3, 1980
Assignee:
Merck & Co., Inc.
Inventors:
Arthur F. Wagner, Nathaniel Grier, Tsung-Ying Shen
Abstract: A phenol-aldehyde resin composition consisting essentially of the polymerization product of an alkali organic extract of peanut hulls and pecan piths polymerized with an aldehyde. The peanut hull and pecan pith alkali organic extracts are polymerized with an aldehyde and used to formulate resins suitable for use in plywood adhesives, in wood bonding agents and in cellulosic material impregnating agents.
Abstract: A phenol-aldehyde resin composition consisting essentially of the polymerization product of an alkali organic extract of peanut hulls and pecan piths polymerized with an aldehyde. The peanut hull and pecan pith alkali organic extract are polymerized with an aldehyde and used to formulate resins suitable for use in polywood adhesives, in molding compounds, in wood bonding agents and in cellulosic material impregnating agents.
Abstract: Novel polymers having a linear backbone which is free from both branching and cross-linking, comprising either tertiary or quaternized nitrogen atoms linked to each other through ethylene groups. These polymers are useful as antimicrobials, flocculating agents, antistatic agents, electroconductive agents for coating paper, chelating agents and bile acid binding agents, as well as in similar applications where their high charge to weight ratio and fully accessible nitrogen atoms can be employed. The polymers are obtained by the polymerization of an oxazoline, hydrolysis or direct reduction, nitrogen substitution, and optional quaternization of the resulting polymer.
Type:
Grant
Filed:
September 29, 1977
Date of Patent:
July 17, 1979
Assignee:
Merck & Co., Inc.
Inventors:
Arthur F. Wagner, Nathaniel Grier, Tsung-Ying Shen
Abstract: Block copolymer of the structure A-B wherein:A is a polylactone block of recurring units: ##STR1## wherein PM is a linear polymethylene chain having from 2 to 13 carbon atoms,B is a polyoxymethylene block of recurring units --CH.sub.2 O--. The block copolymer contains at least 2 wt.% of block B and at least 0.1 wt.% of block A.The block copolymer can be used as modified polyacetal when rich in block B, or as special additive for plastics materials when rich in block A.
Type:
Grant
Filed:
October 22, 1976
Date of Patent:
July 10, 1979
Assignee:
Societa' Italiana Resine S.I.R. S.p.A.
Inventors:
Pierino Radici, Gaudenzio Bianchi, Paolo Colombo