Patents by Inventor Nigel G. Wall

Nigel G. Wall has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the production of synthetic rubber latices, their use as a starting material in the production of pressure-sensitive adhesives and pressure-sensitive adhesives
    Patent number: 4445959
    Abstract: A process for the production of synthetic rubber latices by the emulsion polymerization of a monomer mixture of:40 to 80 parts by weight of a conjugated diene;0 to 45 parts by weight of an aromatic vinyl compound;0 to 30 parts by weight of (meth)acrylonitrile0 to 30 parts by weight of a (meth)acrylic acid ester containing from 1 to 12 carbon atoms in the alcohol component or other copolymerizable compounds, and0.5 to 5.0 parts by weight of an .alpha., .beta.-unsaturated mopnocarboxylic or dicarboxylic acid,the sum of the monomer compounds amounting to 100 parts by weight, characterized in that from 0.5 to 2.0 parts by weight of a chain transfer agent are used per 100 parts by weight of monomer. Said latices can be used for producing pressure-sensitive adhesives.
    Type: Grant
    Filed: May 14, 1982
    Date of Patent: May 1, 1984
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rudolf Hombach, Wilfried Nolte, Peter J. Russell, Nigel G. Wall