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Pressure-sensitive adhesive composition, pressure-sensitive adhesive sheet, and moisture-permeable waterproof pressure-sensitive adhesive sheet
US9708510B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9708510-B2 |
| Application number | US-201314380872-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 5, 2013 |
| Priority date | Mar 13, 2012 |
| Publication date | Jul 18, 2017 |
| Grant date | Jul 18, 2017 |
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Abstract
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A pressure-sensitive adhesive composition includes 100 parts by mass of a rubber component containing 40 to 93 mass % of a butyl rubber and 7 to 60 mass % of a polyisobutylene and 82 to 128 parts by mass of a softener having a kinetic viscosity at 40° C. of 100 to 9,000 mm 2 /s.
First claim
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The invention claimed is: 1. A pressure-sensitive adhesive composition comprising: 100 parts by mass of a rubber component containing 40 to 93 mass % of a butyl rubber and 7 to 60 mass % of a polyisobutylene; and 82 to 128 parts by mass of a softener having a kinetic viscosity at 40° C. of 100 to 9,000 mm 2 /s, wherein a pressure-sensitive adhesive layer formed from the pressure-sensitive adhesive composition has a pressure-sensitive adhesive force of 3.0 N/25 mm or more in a temperature range of −10° C. to 60° C. 2. The pressure-sensitive adhesive composition according to claim 1 , wherein the softener has a pour point of −55to −10° C. 3. The pressure-sensitive adhesive composition according to claim 1 , wherein the polyisobutylene has a viscosity average molecular weight of 500,000 to 3,000,000. 4. The pressure-sensitive adhesive composition according to claim 1 , wherein the butyl rubber is a reclaimed butyl rubber. 5. The pressure-sensitive adhesive composition according to claim 1 , wherein the pressure-sensitive adhesive composition further contains a cross-linking agent. 6. The pressure-sensitive adhesive composition according to claim 1 , wherein the softener is polybutene. 7. A pressure-sensitive adhesive sheet comprising: a pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition containing: 100 parts by mass of a rubber component containing 40 to 93 mass % of a butyl rubber and 7 to 60 mass % of a polyisobutylene; and 82 to 128 parts by mass of a softener having a kinetic viscosity at 40° C. of 100 to 9,000 mm 2 /s, wherein the pressure-sensitive adhesive layer has a pressure-sensitive adhesive force of 3.0 N/25 mm or more in a temperature range of −10° C. to 60° C. 8. A moisture-permeable waterproof pressure-sensitive adhesive sheet comprising: a moisture-permeable waterproof sheet; and a pressure-sensitive adhesive sheet laminated on the moisture-permeable waterproof sheet, wherein the pressure-sensitive adhesive sheet includes a pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition containing: 100 parts by mass of a rubber component containing 40 to 93 mass % of a butyl rubber and 7 to 60 mass % of a polyisobutylene; and 82 to 128 parts by mass of a softener having a kinetic viscosity at 40° C. of 100 to 9,000 mm 2 /s, wherein the pressure-sensitive adhesive layer has a pressure-sensitive adhesive force of 3.0 N/25 mm or more in a temperature range of −10° C. to 60° C.
Assignees
Inventors
Classifications
- C08L23/22Primary
Copolymers of isobutene; Butyl rubber; Homopolymers or copolymers of other iso-olefins · CPC title
Release layer · CPC title
containing two or more polymers of the same C08L -group · CPC title
Adhesives based on reclaimed rubber · CPC title
including moisture or waterproof component · CPC title
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- What does patent US9708510B2 cover?
- A pressure-sensitive adhesive composition includes 100 parts by mass of a rubber component containing 40 to 93 mass % of a butyl rubber and 7 to 60 mass % of a polyisobutylene and 82 to 128 parts by mass of a softener having a kinetic viscosity at 40° C. of 100 to 9,000 mm 2 /s.
- Who is the assignee on this patent?
- Nitto Denko Corp
- What technology area does this patent fall under?
- Primary CPC classification C08L23/22. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 18 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).