Title:
POLYMERISATION INITIATORS BASED ON AMMONIUM TETRAALKYL BORANES, POLYMERISABLE COMPOSITIONS, AND USES THEREOF FOR BONDING LOW SURFACE ENERGY SUBSTRATES
Document Type and Number:
WIPO Patent Application WO2003089536
Kind Code:
A3
Abstract:
Quaternary boron salts are used as initiators of polymerisation in two-part acrylic adhesive compositions for bonding low surface energy substrates such as polyolefins. The two-part compositions comprise part A) the quaternary boron salt and at least one (meth)acrylate monomer; and part B) at least one (meth)acrylate monomer together with a compound reactive with the quaternary boron salt to free an organoborane therefrom. Parts A and B can be used in a 1:1 ratio. The quaternary boron salts are of the formula (I) wherein R<1> is C1-C10 alkyl, R<2>, R<3> and R<4>, which may be the same or different, are, C1-C10 alkyl or C3<->C10 cycloalkyl, phenyl, or phenyl-substituted C1-C10 alkyl or C3<->C10 cycloalkyl, provided that any two of R-< >R<4 >may optionally be part of a carbocyclic ring, and M<+> is a quaternary ammonium ion. Particular examples of initiator compounds include tetramethylammonium phenyl triethyl borate, and tetra methyl ammonium phenyl tri-n-butyl borate, the latter of which is a novel compound.
Inventors:
KNEAFSEY BRENDAN J (IE)
COUGHLAN GERARD (IE)
HARTY THOMAS (IE)
COUGHLAN GERARD (IE)
HARTY THOMAS (IE)
Application Number:
PCT/IE2003/000058
Publication Date:
March 25, 2004
Filing Date:
April 07, 2003
Export Citation:
Assignee:
LOCTITE R & D LTD (IE)
KNEAFSEY BRENDAN J (IE)
COUGHLAN GERARD (IE)
HARTY THOMAS (IE)
KNEAFSEY BRENDAN J (IE)
COUGHLAN GERARD (IE)
HARTY THOMAS (IE)
International Classes:
C09J4/00; C09J4/02; (IPC1-7): C09J4/00; C08F220/18; C08F4/52
Foreign References:
| EP1201722A1 | 2002-05-02 |
Other References:
SARKER, ANANDA M. ET AL: "Visible light photopolymerization employing 2,4-diiodo-6-butoxy-3- fluorone and tetraorganylborate salts as photoinitiators", JOURNAL OF POLYMER SCIENCE, PART A: POLYMER CHEMISTRY (1996), 34(13), 2817-2824, XP001155790
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