Nova Patents
ATE228596T1

Methods for reducing amine odor in paper

Abstract

A method of reducing the level of malodorous amines emitted by paper when exposed to an alkaline environment is provided, which comprises making the paper so that it does not contain ammonium groups that are bonded to any polymer contained in the paper by only one chemical bond. Laminates which emit reduced levels of amines and which are comprised of this paper are also provided. In a preferred embodiment, the paper is sized with a sizing emulsion comprised of alkenyl succinic anhydride and a cationic water-soluble polymer having ammonium groups that are attached to the polymer by at least two chemical bonds.

Term

Term ended

Projected expiry passed 16 August 2019, 7.1 years ago.

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13 members in 8 offices

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Priority claims
DocumentOfficeKindDate
9978198United States of AmericaP
32107899United States of AmericaA
9918563United States of AmericaW

Members13

Family members, oldest first
DocumentOfficeKind
CA2352153A1CanadaA1
WO0015906A1World Intellectual Property Organization (WIPO)A1
AU5674799AAustraliaA
EP1123442A1European Patent Office (EPO)A1
CN1325472AChinaA
EP1123442B1European Patent Office (EPO)B1
US6491790B1United States of AmericaB1
AT228596TAustriaT
ATE228596T1This recordAustriaT1
DE69904227D1GermanyD1
US2003070782A1United States of AmericaA1
US6743335B2United States of AmericaB2
CA2352153CCanadaC