Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...
Reexamination Certificate
1999-04-08
2001-01-16
Berman, Susan W. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Compositions to be polymerized by wave energy wherein said...
C522S031000, C522S120000, C522S121000, C525S385000, C525S416000, C524S525000, C524S526000, C524S528000, C524S534000, C524S570000, C524S571000
Reexamination Certificate
active
06174933
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to radiation polymerizable vinylether based compositions, and, more particularly, to cured vinyl ether compositions having a predetermined balance of tack, peel and shear suitable for use in pressure sensitive adhesive applications.
2. Description of the Prior Art
Aeling, E.O. et al, in EPA 0447115A1, published Sep. 18, 1991, described radiation curable coating compositions which required the presence of both a monovinylether monomer whose homopolymer had a Tg of 300° K or lower (low Tg) and a monovinyl ether monomer whose homopolymer had a Tg of 300° K or higher (high Tg).
Accordingly, it is an object of this invention to provide a radiation polymerizable vinylether composition of a single monovinylether having a predetermined balance of tack, peel and shear suitable for use in pressure sensitive adhesive applications.
These and other objects of the invention will be made apparent from the following description thereof.
TABLE I
Vinylether Monomers
DVE-3-(triethyleneglycol divinylether)
CHVE-(cyclohexanedimethanol divinylether)
CVE-(cyclohexylvinylether)
EHVE-(ethylhexylvinylether)
DDVE-(dodecylvinylether)
HBVE-(hydroxybutyl vinylether)
SUMMARY OF THE INVENTION
What is described herein is a radiation polymerizable composition, which has, by weight:
(a) at least 95% of a liquid C
5
-C
8
linear or branched alkyl monovinyl ether monomer,
(b) up to 5% of a divinyl or trivinyl ether crosslinker,
(c) up to 5% of a cationic photoinitiator, and
(d) about 10 to 30 parts per hundred resin (phr) of a hydrocarbon soluble tackifier resin.
The composition herein also may include (e) up to 10 phr of a non-reactive filler.
In preferred chemical embodiments of the invention, (a) is ethylhexylvinyl ether, (b) is cyclohexanedimethanoldivinyl ether or triethyleneglycoldivinyl ether, (c) is an iodonium/sulfonium salt and (d) is a hydrogenated hydrocarbon resin. In preferred compositional ranges of the composition, (a) is 96-99%, (b) is 1-3%, (c) is 1-3 phr, (d) is 10-15 phr, and (e) is 5-10 phr.
The polymerizable composition of the invention has a predetermined viscosity of about 50 to 500 cps which is suitable for spray, gravure or roll coating the composition onto a substrate. The resultant cured coating has a predetermined balance of tack, peel and shear properties, preferably a tack of about 200-1000 g/cm
2
, a peel of about 200-1500 g, and a shear of at least 24 hrs.
REFERENCES:
patent: 3280217 (1966-10-01), Lader et al.
patent: 4291114 (1981-09-01), Berggren et al.
patent: 5314929 (1994-05-01), Crivello et al.
patent: 6028124 (2000-02-01), Glover et al.
patent: 0 477 115 A1 (1991-09-01), None
Dougherty James A.
Mathur Arvind M.
McKittrick John
Berman Susan W.
Davis William J.
ISP Investments Inc.
Katz Walter
Maue Marilyn J.
LandOfFree
Radiation polymerizable vinylether-based compositions does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Radiation polymerizable vinylether-based compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radiation polymerizable vinylether-based compositions will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2458281