Abstract: A carpet material with at least one of its components made easier for recycle by use of an adhesive which can be selectively altered to change the adhesion strength to allow component carpet layers to be separated.
Type:
Application
Filed:
September 21, 2009
Publication date:
February 17, 2011
Applicant:
INTERFACE INTERNATIONAL B.V.
Inventors:
John Robert Mantle, James Hanley Clark, Peter Samuel Shuttleworth
Abstract: The invention provides a composition comprising an aqueous solution of 0.1-20 wt. % of a poly(amine) and 0.1 to 50 wt. % of a carboxylated carbohydrate having an average molecular weight of at least 100,000 D and a degree of carboxyl substitution of at least 5%, which carboxylated carbohydrate has been obtained by subjecting a corresponding original carbohydrate to an oxidation treatment whereby carboxyl and aldehyde groups are obtained by oxidation of hydroxyl groups of the original carbohydrate, after which the oxidised carbohydrate so obtained is contacted with a reducing agent whereby at least part of the aldehyde groups that were obtained in the oxidation treatment are reduced to hydroxymethyl groups, whereby the carboxylated carbohydrate comprises at least part of the reducing agent and/or its reaction product(s), and wherein the carboxylated carbohydrate forms a complex with the poly(amine).
Type:
Grant
Filed:
February 14, 2005
Date of Patent:
March 16, 2010
Assignee:
Nederlandse Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek TNO
Inventors:
Arjen Boersma, Theodoor M. Slaghek, Jan J. de Vlieger
Abstract: The invention relates to an adhesive formulation that comprises a starch-based adhesive dissolved in water. According to the invention the adhesive is made up of a native starch transglycosylation product and the solids content of the adhesive formulation is at least 45% by weight. The invention also relates to a method for preparing such adhesive formulations and to the use of the adhesives.