Epoxy adhesive, automotive member, and method for manufacturing same
US-2017313918-A1 · Nov 2, 2017 · US
Adhesive composition
US2022017797A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022017797-A1 |
| Application number | US-201917297387-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 3, 2019 |
| Priority date | Dec 4, 2018 |
| Publication date | Jan 20, 2022 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
An adhesive composition comprising a silane-modified epoxy resin, a dicyclopentadiene novolac epoxy resin and a curing agent. The composition shows good oily steel bonding, even in the absence of CTBN rubber or rubber adducts as toughening agents, with good Tg values of the cured resin and good Tg retention after hot wet aging.
First claim
Opening claim text (preview).
1 . (canceled) 2 . (canceled) 3 . (canceled) 4 . (canceled) 5 . (canceled) 6 . (canceled) 7 . (canceled) 8 . (canceled) 9 . (canceled) 10 . (canceled) 11 . (canceled) 12 . (canceled) 13 . (canceled) 14 . (canceled) 15 . (canceled) 16 . (canceled) 17 . (canceled) 18 . (canceled) 19 . (canceled) 20 . An adhesive composition which comprises, by total weight of the composition: (a) 1 to 15% of a silane-modified epoxy resin, comprising an alkoxy- or alkoxysilane-modified epoxy resin, having an expoxy-equivalent weight of 170 to 1,000 g/eq.; (b) 20 to 60% dicyclopentadiene novolac epoxy resin, having an expoxy equivalent weight of approximately 200 to 300 g/eq. and a softening point of 60 to 90° C.; (c) 1 to 10% curing agent comprising dicyandiamide. (d) 5 to 30% core shell rubber; (e) 1 to 10% nitrile rubber-modified epoxy resin; and (f) 5 to 10% inorganic filler which is an oil absorbent. 21 . The method of bonding two surfaces comprising: applying an adhesive composition as claimed in claim 20 to a first surface; contacting the adhesive composition applied to the first surface with a second surface, said second surface being oily steel or oily galvanized steel; and curing the adhesive composition at a temperature of 140° C. to 170° C. for no more than 60 minutes. 22 . (canceled) 23 . (canceled) 24 . (canceled) 25 . (canceled) 26 . (canceled) 27 . (canceled) 28 . (canceled) 29 . (canceled) 30 . (canceled) 31 . (canceled) 32 . (canceled)
Assignees
Inventors
Classifications
in the substrate · CPC title
in the substrate · CPC title
in the substrate · CPC title
- C09J163/04Primary
Epoxynovolacs · CPC title
involving heating of the applied adhesive · CPC title
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Frequently asked questions
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- What does patent US2022017797A1 cover?
- An adhesive composition comprising a silane-modified epoxy resin, a dicyclopentadiene novolac epoxy resin and a curing agent. The composition shows good oily steel bonding, even in the absence of CTBN rubber or rubber adducts as toughening agents, with good Tg values of the cured resin and good Tg retention after hot wet aging.
- Who is the assignee on this patent?
- Hexcel Composites Ltd
- What technology area does this patent fall under?
- Primary CPC classification C09J163/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Jan 20 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).