Multiblock hydrogenated polymers for adhesives
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
Jun 27, 2000
Grant Date -
N/A
app pub date -
Feb 26, 1997
filing date -
Nov 3, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention encompasses nontapered block copolymers of the following structure and adhesives containing them D--A--(B--A).sub.n --D.sub.x or (D--A--B).sub.z --Y where A is a vinyl aromatic hydrocarbon polymer block, B and D are hydrogenated conjugated diene polymer blocks wherein if the diene is butadiene, it must have a vinyl content of at least 30 percent by weight, n is an integer from 1 to 5, x is 0 or 1, z is an integer from 2 to 30, and Y is a multifunctional coupling agent and the copolymer has a vinyl aromatic hydrocarbon content of from 9 to 35 percent by weight. The ratio of the molecular weight of D to that of B ranges in accordance with the normalized molecular weight factor which may range from greater than 0 up to 180.times.10.sup.-6.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully