Abstract: Water-soluble polymers of esters made from acrylic acid and alkylpolyalkylene glycols, obtainable by azeotropic esterification of a mixture of acrylic acid and alkylpolyalkylene glycol in a molar ratio of from 2 to 3:1 in the presence of at least 85% by weight, based on the alkylpolyalkylene glycol, of an organic solvent which forms an azeotrope with water, followed by free-radical polymerization, in an aqueous medium, of the mixture obtained during the esterification, where the organic solvent is distilled off azeotropically from the reaction mixture during the polymerization, and the water removed by distillation is returned to the mixture or replaced by a feed of fresh water, and preparation and use of these polymers as an additive to cementitious systems.
Type:
Grant
Filed:
May 2, 2002
Date of Patent:
February 1, 2005
Assignee:
BASF Aktiengesellschaft
Inventors:
Matthias Kroner, Karl-Heinz Büchner, Gregor Brodt
Abstract: A film having a large tensile stress in the machine direction, excellent mechanical properties and stretch-wrapping property, and that is less broken at the time of wrapping, can be favorably torn off in the transverse direction, can be intimately adhered on the container walls to be wrapped, and excellently restores its shape after it is depressed and deformed as a result of wrapping. The film for stretch-wrapping is formed of a resin composition containing, as a chief component, an ethylene/(meth)acrylic acid/(meth)acrylic acid ester terpolymer that contains not more than 7% by weight of a (meth)acrylic acid ester unit, and, optionally, containing an anti-fogging agent or a tackifier.
Abstract: The present invention provides compositions and methods for removing water from a sealant composition. This includes the addition of a particularly selected anhydride to a sealant composition and further addition of an acrylic acid, in order to remove water from a sealant composition.
Type:
Grant
Filed:
March 4, 2003
Date of Patent:
November 2, 2004
Inventors:
Frederick F. Newberth, III, Peter J. Chupas
Abstract: The invention relates to a new process for the preparation of functionalized telechelics based on vinyl polymers, the telechelics prepared in this way and their use in the plastics, fibers or coating sector.
Type:
Grant
Filed:
April 7, 2003
Date of Patent:
October 5, 2004
Assignee:
Bayer Aktiengesellschaft
Inventors:
Martin Melchiors, Hartwig Höcker, Helmut Keul, Dirk Achten