ADHESIVE COMPOSITIONS WITH MULTIPLE TACKIFIERS
The present invention relates to an adhesive composition comprising: a) a block copolymer comprising at least two A endblock polymeric units that are each derived from a first monoethylenically unsaturated monomer comprising a (meth)acrylate, styrene, or combination thereof, wherein each A endblock...
Saved in:
Main Authors | , , , |
---|---|
Format | Patent |
Language | English Korean |
Published |
07.02.2011
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | The present invention relates to an adhesive composition comprising: a) a block copolymer comprising at least two A endblock polymeric units that are each derived from a first monoethylenically unsaturated monomer comprising a (meth)acrylate, styrene, or combination thereof, wherein each A endblock has a glass transition temperature of at least 50 °C; and at least one B midblock polymeric unit that is derived from a second monoethylenically unsaturated monomer comprising a (meth)acrylate, vinyl ester, or combination thereof, wherein each B midblock has a glass transition temperature no greater than 20 °C; and b) a tackifier mixture comprising
1) 30 to 70 weight percent weight percent of a first rosin acid, first rosin ester, or mixture thereof having zero or one carbon-carbon bond;
2) 10 to 40 weight percent of a second rosin acid, second rosin ester, or mixture thereof having two carbon-carbon double bonds; and
3) 10 to 50 weight percent of a third rosin acid, third rosin ester, or mixture thereof having three carbon-carbon double bonds. |
---|---|
Bibliography: | Application Number: KR20107028927 |