Glass fiber sizing agent and glass fiber-reinforced crystalline resin composition

US9309380B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9309380-B2
Application numberUS-201113979482-A
CountryUS
Kind codeB2
Filing dateDec 22, 2011
Priority dateMar 17, 2011
Publication dateApr 12, 2016
Grant dateApr 12, 2016

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

Disclosed is a glass fiber-reinforced crystalline resin composition superior in the surface properties and the mechanical properties of a molded article thereof. Specifically, provided is a glass fiber-reinforced crystalline resin composition containing a glass fiber sizing agent that is an aqueous resin containing an o-sulfobenzimide compound, a crystalline resin, glass fibers, wherein the glass fibers have been treated with the glass fiber sizing agent. An aqueous polyurethane resin is preferred as the aqueous resin.

First claim

Opening claim text (preview).

The invention claimed is: 1. A glass fiber-reinforced crystalline resin composition comprising a crystalline resin and glass fibers, wherein the crystalline resin is a polyolefin resin, and the glass fibers have been treated with a glass fiber sizing agent comprising an aqueous polyurethane resin comprising at least one o-sulfobenzimide compound selected from the group consisting of: 2. The glass fiber-reinforced crystalline resin composition according to claim 1 , wherein the content of the o-sulfobenzimide compound is 1 to 10 parts by mass relative to 100 parts by mass of the aqueous polyurethane resin. 3. The glass fiber-reinforced crystalline resin composition according to claim 1 , comprising 60-90% by mass of the crystalline resin and 5-40% by mass of the glass fibers treated with the glass fiber sizing agent. 4. The glass fiber-reinforced crystalline resin composition according to claim 1 , wherein the crystalline resin comprises polypropylene resin. 5. The glass fiber-reinforced crystalline resin composition according to claim 1 , wherein the at least one o-sulfobenzimide compound is 6. The glass fiber-reinforced crystalline resin composition according to claim 1 , further comprising at least one antioxidant. 7. The glass fiber-reinforced crystalline resin composition according to claim 1 , wherein the glass fibers treated with the glass fiber sizing agent contain 0.1 to 5 parts by mass of sizing agent, expressed in residual solid content, based on 100 parts by mass of the glass fibers. 8. The glass fiber-reinforced crystalline resin composition according to claim 1 , wherein the glass fibers have a fiber length of 1-5 mm and a fiber diameter of 2-20 μm.

Assignees

Inventors

Classifications

  • condensed with carbocyclic rings · CPC title

  • Homopolymers or copolymers of propene · CPC title

  • Homopolymers or copolymers of ethene · CPC title

  • Polyureas; Polyurethanes · CPC title

  • C08K5/46Primary

    with oxygen or nitrogen in the ring · CPC title

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What does patent US9309380B2 cover?
Disclosed is a glass fiber-reinforced crystalline resin composition superior in the surface properties and the mechanical properties of a molded article thereof. Specifically, provided is a glass fiber-reinforced crystalline resin composition containing a glass fiber sizing agent that is an aqueous resin containing an o-sulfobenzimide compound, a crystalline resin, glass fibers, wherein the gla…
Who is the assignee on this patent?
Kobayashi Kazushi, Shimamura Nobuyuki, Adeka Corp
What technology area does this patent fall under?
Primary CPC classification C08K5/46. Mapped technology areas include Chemistry & Metallurgy.
When was this patent published?
Publication date Tue Apr 12 2016 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).