Title:
LOW VISCOSITY, HOT-MELT STABLE ADHESIVE COMPOSITIONS
Document Type and Number:
WIPO Patent Application WO2005063914
Kind Code:
A3
Abstract:
Low viscosity, hot-melt stable adhesive composition, comprising: a) at least one block copolymer, comprising at least two terminal poly(vinyl aromatic) blocks and at least one central block of randomly copolymerised isoprene/butadiene mixtures in an isoprene/butadiene weight ratio of from 45/55 to 55/45, having a poly(vinyl aromatic) content in the range of from 17 to 20 %, a total apparent molecular weight in the range of from 180,000 to 190,000, a content of 1,2-vinyl bonds and/or 3,4 vinyl bonds, each in a proportion of at most 15 wt% in the conjugated diene blocks, and a coupling efficiency in the range of from 63-87 %, occurring in a weight proportion of from 40 to 45 wt%, relative to the weight of the complete composition; b) an aliphatic/aromatic hydrocarbon tackifying resin, containing less than 16 % by weight of aromatic structure as determined by H-NMR, a differential scanning calorimetry (DSC) glass transition temperature (Tg) between 30 and 55°C, and a Ring and Ball softening point between 85 and 95°C, and occurring in a weight proportion of from 45 to 55 wt%, relative to the weight of the complete composition; c) a plasticizer, in a weight proportion of from 5 to 15 wt%, relative to the weight of the complete composition, and adhesive tapes and labels, comprising said composition.
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Inventors:
DE KEYZER NOEL RAYMOND MAURICE (BE)
SOUTHWICK JEFFREY GEORGE (US)
VAN DIJK CORNELIS MARTINUS (NL)
SOUTHWICK JEFFREY GEORGE (US)
VAN DIJK CORNELIS MARTINUS (NL)
Application Number:
PCT/EP2004/053592
Publication Date:
December 15, 2005
Filing Date:
December 17, 2004
Export Citation:
Assignee:
KRATON POLYMERS RES BV (NL)
DE KEYZER NOEL RAYMOND MAURICE (BE)
SOUTHWICK JEFFREY GEORGE (US)
VAN DIJK CORNELIS MARTINUS (NL)
DE KEYZER NOEL RAYMOND MAURICE (BE)
SOUTHWICK JEFFREY GEORGE (US)
VAN DIJK CORNELIS MARTINUS (NL)
International Classes:
C08F297/04; C08L53/02; C09J153/02; (IPC1-7): C09J153/02; C08F297/04; C08L53/02
Domestic Patent References:
| WO2002057386A2 | 2002-07-25 | |||
| WO1995016755A1 | 1995-06-22 |
Foreign References:
| DE2942128A1 | 1981-04-30 | |||
| EP0027606A1 | 1981-04-29 | |||
| US5583182A | 1996-12-10 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 0181, no. 91 (C - 1186) 4 April 1994 (1994-04-04)
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