IP Library Granted Patent US 8,318,305
Granted Patent B2
US 8,318,305 · App. 13/115,605 · Granted Nov 27, 2012

Resin composition

Assignees: Sumitomo Chemical Company, Limited; Teijin Fibers Limited
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Quick Facts
Patent No.
US 8,318,305
App. No.
13/115,605
Granted
Nov 27, 2012
Kind
B2
Abstract

A resin composition comprising a fiber component and a resin component, wherein the fiber component is (A) a surface-treated fiber (component A) which comprises 100 parts by weight of a fiber comprising a polyalkylene terephthalate and/or a polyalkylene naphthalene dicarboxylate (component Af) and 0.1 to 10 parts by weight of a sizing agent having a glass transition point of −80° C. or higher and lower than 70° C. and adhered to the surface of the fiber (component Ac); and the resin component comprises (B) an ethylene-based copolymer containing a glycidyl group (component B), (C) a modified polyolefin resin modified with an unsaturated carboxylic acid and/or an unsaturated carboxylic acid derivative (component C), and (D) a polyolefin resin having a melt flow rate of 40 to 200 g/10 min (component D), except for the components C and D, the content of the component D being 30 to 850 parts by weight based on 100 parts by weight of the component A, and the total content of the components B and C being 5 to 630 parts by weight based on 100 parts by weight of the component A, and a molded article thereof.

Claims (18)

1. A resin composition comprising a fiber component and a resin component, wherein

the fiber component is (A) a surface-treated fiber (component A) which comprises 100 parts by weight of a fiber comprising a polyalkylene terephthalate and/or a polyalkylene naphthalene dicarboxylate (component Af) and 0.1 to 10 parts by weight of a sizing agent (component Ac) having a glass transition point of −80° C. or higher and lower than 70° C. and adhered to the surface of the fiber; and

the resin component comprises

(B) an ethylene-based copolymer containing a glycidyl group (component B),

(C) a modified polyolefin resin modified with an unsaturated carboxylic acid and/or an unsaturated carboxylic acid derivative (component C), and

(D) a polyolefin resin having a melt flow rate of 40 to 200 g/10 min (component D), except for the components B and C,

the content of the component D being 30 to 850 parts by weight based on 100 parts by weight of the component A, and the total content of the components B and C being 5 to 630 parts by weight based on 100 parts by weight of the component A,

wherein the components B and C satisfy the following expression:

0.02 ≦Cx·Cy/Bx·By≦ 3.0

Bx: content (wt %) of component B

By: content (wt %) of monomer unit having a glycidyl group in component B

Cx: content (wt %) of component C

Cy: content (wt %) of monomer unit derived from unsaturated carboxylic acid and/or unsaturated carboxylic acid derivative in component C.

2. The resin composition according to claim 1 , wherein the component Ac is a polyurethane resin.

3. The resin composition according to claim 1 , wherein the component Af has a weight average fiber length of 2 to 50 mm.

4. The resin composition according to claim 1 , which has a pellet shape.

5. A molded article molded from the resin composition of claim 1 .

6. The molded article according to claim 5 , which is selected from a car interior part, a car exterior part and an engine room part.

Assignments (2)
MERGER Recorded Jan 22, 2018
From: TEIJIN FIBERS LIMITED
To: TEIJIN FRONTIER CO., LTD.
Reel/Frame 045102/0722 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 8, 2011
From: WATANABE, KENJI; ATARASHI, KENJI; CHATANI, KUMIKO; ARAKAWA, MOTOOMI
To: SUMITOMO CHEMICAL COMPANY, LIMITED; TEIJIN FIBERS LIMITED
Reel/Frame 026712/0506 →
Priority Claims (1)
JP 2010-122621 · May 28, 2010 · national
Continuity (1)
Related Publication 20110293913A1 · Dec 1, 2011