Rohm and Haas Company

Frederick Paul Hinz

Kathleen Anne Koziski

Mark Alan Kesselmayer

Meredith Ann Morgan

Anne Margaret Bacho

Fergus Stuart McColl

Lori Branham Pfahler

The open time of a cementitious composition, such as a grout, may be increased by the incorporating therein, as a binder, a polymer composition comprising a film-forming copolymer formed by polymerization of a monomer mixture comprising 1 to 3% of at least one monomer selected from the group of monomers consisting of amides of &agr;,&bgr;-unsaturated C to C carboxylic acids and at least one hydroxy-(C to C )alkyl (meth)acrylate monomer, wherein the total amount of these monomers is from 2 to 7.5% by weight of said monomer mixture.

Polymer compositions

This invention relates to vinyl monomer compositions having accelerated surface cure characteristics. These compositions are prepared from a vinyl monomer or monomer mixtures such as blend of isobornyl methacrylate and hydroxypropyl methacrylate, a bulk phase polymerization catalyst system, a polyvalent metal oxidative surface phase catalyst, and a diolefin rubber dispersed in the vinyl monomer as a surface cure accelerator. These compositions are useful as sealers, healers and for polymer concrete.

Vinyl monomer compositions with accelerated surface cure

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Jeffersonville, PA, United States of America

Frederick Paul Hinz