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Amorphous-polyester-compositions-and-uses-thereof

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Amorphous polyester compositions and uses thereof

Details

Inventors: Koga, Hitoshi; Iwata, Kazuo; Mishimoto, Masushi; Hashimoto, Nikio;
Assignee: Mitsui Petrochemical Industries, Ltd. (JP)
Primary Examiner: Short; Patricia
Assistant Examiner:
Attorney, Agent or Firm: Sherman and Shalloway

An amorphous polyester composition according to the present invention comprises (A) a low crystalline polyolefin modified with unsaturated carboxylic acids, (B) an amorphous polyester, (C) a silane coupling agent and (D) an optional inorganic filler, wherein (A) forms a matrix phase and (B) forms a domain phase. This amorphous polyester composition has excellent adhesion properties to different materials such as metal and has excellent damping performance, and therefore a damping material having excellent initial adhesion properties and water-resistant adhesion properties and excellent damping performance, particularly at high temperatures can be obtained from such an amorphous polyester composition.

DETAILED DESCRIPTION A first amorphous polyester composition according to the present invention is a resin composition comprising (A) a low crystalline polyolefin modified with an unsaturated carboxylic acid, (B) an amorphous polyester and (C) a silane coupling agent, wherein (A) is present from 30% to 60% by weight; (B) is present from 40% to 70% by weight; (C) is present from 0.
05 to 4 parts by weight per 100 parts by weight of the total amount of (A) and (B); and (A) forms a matrix phase and (B) forms a domain phase.
A second amorphous polyester composition according to the present invention comprises (A) a low crystalline polyolefin modified with an unsaturated carboxylic acid, (B) an amorphous polyester, (C) a silane coupling agent and (D) an inorganic filler wherein (A) is present from 30% to 60% by weight; (B) is present from 40% to 70% by weight; (C) is present from 0.
05 to 4 parts by weight per 100 parts by weight of the total amount of (A) and (B); (D) is present from 0.
5 to 4 parts by weight per 100 parts by weight of the total amount of (A) and (B); and (A) forms a matrix phase, and (B) forms a domain phase.
The first amorphous polyester composition or second amorphous polyester composition as described above is used as a damping material.

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