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US 2019/0375967 A1Published application
Low water vapor transmission rate (wvtr) adhesive
Assignee3M Innovative Properties Company
InventorsYing Zhang, Vasav Sahni, Albert I. Everaerts, Jason D. Clapper, Jianhui Xia
Life of this patent
Estimating the term…
Abstract
The present invention is an adhesive composition including at least one low molecular weight polyisobutylene polymer having a weight average molecular weight of about 75,000 or lower, at least one high molecular weight polyisobutylene polymer having a weight average molecular weight of about 120,000 or higher, and optionally, at least one tackifier.
Claims12
An adhesive composition comprising:
- at least one low molecular weight polyisobutylene polymer having a weight average molecular weight of about 75,000 or lower;
- at least one high molecular weight polyisobutylene polymer having a weight average molecular weight of about 120,000 or higher;
- and
- optionally, at least one tackifier.
1 more element
An adhesive composition for use in electronic device comprising:
- at least one low molecular weight polyisobutylene polymer;
- at least one high molecular weight polyisobutylene polymer;
- and
- optionally at least one tackifier,
- wherein the composition has a 60° C./5 minute creep compliance greater than 1.5×10−4.
2 more elements
Dependencies are inferred from the claim text.