Roll material for manufacturing electromagnetic induction sealing liner and sealing liner
US-2024424770-A1 · Dec 26, 2024 · US
Multilayer rotational moulding
US9962911B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9962911-B2 |
| Application number | US-201213458047-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 27, 2012 |
| Priority date | Nov 21, 2002 |
| Publication date | May 8, 2018 |
| Grant date | May 8, 2018 |
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- Title
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- Abstract
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Abstract
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A multilayer article prepared by rotational moulding can include a layer A that is a polyolefin (PO) based layer prepared from PO and a functionalised polyolefin (FPO), or a PO grafter to a non-polyolefin (NPO) in the form of a block copolymer (PO-g-NPO). A layer B can be a PO that is dissimilar from layer A, an NPO, a mixture thereof, and optionally an FPO or a PO-g-NPO. A layer C can be dissimilar from layer A and similar to or dissimilar from layer B. Layer C can be adjacent to layer A and/or layer B, can have good adhesion to layer A and/or layer B, and is not a blend of layer A and layer B. A method of preparing the multilayer article can include rotational moulding.
First claim
Opening claim text (preview).
The invention claimed is: 1. A multilayer article prepared by rotational molding comprising: (a) an outer layer prepared from a polyethylene composition comprising at least 40 wt. % of a first polymer component comprising a non-functionalized polyethylene and from 2 wt. % to 60 wt. % of a second polymer component wherein the second polymer component of the outer layer comprises a polyolefin (PO) grafted to a non-olefinic polymer (NPO) in the form of ((PO)g-NPO) and wherein the second polymer component comprises a functionalized polyethylene having reactive functional units with acid functions or corresponding salt or ester functions or with maleic anhydride functions; and (b) an inner layer prepared from a composition comprising a polyamide, wherein the polyamide is present in an amount ranging from 75 to 100 wt % of said composition of the inner layer, wherein the melting point of the polyethylene composition is at least 15° C. lower than the melting point of the polyamide, wherein the melting point of the polyethylene composition is less than 145° C., and wherein the melting point of the polyamide is at least 145° C. 2. The multilayer article of claim 1 , wherein the ((PO)g-NPO) is polyolefin grafted to polyamide.
Assignees
Inventors
Classifications
Next to vinyl or vinylidene chloride polymer · CPC title
Of polythioether · CPC title
Absolute thicknesses specified · CPC title
Monoolefin polymer · CPC title
comprising polyolefins obtained by a metallocene or single-site catalyst · CPC title
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- What does patent US9962911B2 cover?
- A multilayer article prepared by rotational moulding can include a layer A that is a polyolefin (PO) based layer prepared from PO and a functionalised polyolefin (FPO), or a PO grafter to a non-polyolefin (NPO) in the form of a block copolymer (PO-g-NPO). A layer B can be a PO that is dissimilar from layer A, an NPO, a mixture thereof, and optionally an FPO or a PO-g-NPO. A layer C can be dissi…
- Who is the assignee on this patent?
- Maziers Eric, Obrien Gregory, Clay Bruce, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification B32B27/08. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue May 08 2018 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).