Curable resin composition

• US 5,328,966 A
• Filed: 07/17/1989
• Issued: 07/12/1994
• Est. Priority Date: 07/28/1988
• Status: Expired due to Term

• Current Assignee: Toshiba Silicone Co., Ltd. (General Electric Company)
• Original Assignee: Toshiba Silicone Co., Ltd. (General Electric Company)
• Inventors: Nagaoka, Hisayuki
• Primary Examiner(s): Bleutge, John C.
• Assistant Examiner(s): Gulakowski, Randy
• Application Number:
  US07/380,824
• Time in Patent Office: 1,821 Days
• Field of Search: 525/423, 525/476, 525/510, 528/26, 528/27, 528/38, 528/93
• US Class Current: 525/476
• CPC Class Codes: C08L 2666/14 Macromolecular compounds according to C08L59/00 - C08L87/00; Derivatives thereof
• CPC Class Codes: C08L 2666/28 Non-macromolecular organic substances
• CPC Class Codes: C08L 63/00 Compositions of epoxy resins; Compositions of derivatives of epoxy resins
• CPC Class Codes: C08L 83/00 Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 83/10 Block- or graft-copolymers containing polysiloxane sequences obtained by polymerising a compound having a carbon-to-carbon double bond on to a polysiloxane C08L51/08, C08L53/00

Abstract

Disclosed is a curable resin composition comprising (a) 100 parts by weight of a siloxane-amide block copolymer of formula (1): ##STR1## where R¹ is a substituted or unsubstituted divalent hydrocarbon group; R² may be the same or different and each is a substituted or unsubstituted monovalent hydrocarbon group; R³ is substituted or unsubstituted divalent aromatic hydrocarbon group; and m and an each are a number of 1 or more; (b) from 1 to 100 parts by weight of a crosslinking agent containing 2 or more epoxy groups in the molecule, and (c) up to 15 parts by weight of a curable catalyst. The composition can be cured at room temperature and in the absence of moisture in a closed system to give a cured product having high oil resistance and mechanical strength.

Claims

1. A curable resin composition comprising:

(a) 100 parts by weight of a siloxane-amide block copolymer represented by the formula;

##STR12## where R¹ represents a substituted or unsubstituted divalent hydrocarbon group;

each R² may be the same or different substituted or unsubstituted monovalent hydrocarbon group;

R³ represents a substituted or unsubstituted divalent aromatic hydrocarbon group; and

m and n each represent a number of 1 or more;

(b) from 1 to 100 parts by weight of a crosslinking agent containing 2 or more epoxy groups; and

(c) up to 15 parts by weight of a curing catalyst.

2. The curable resin composition as claimed in claim 1, in which the component (b) is a compound of the formula:

##STR13## where R⁴ represents a substituted or unsubstituted divalent hydrocarbon group.

3. The curable resin composition as claimed in claim 1, in which the component (c) is a compound of the formula:

space="preserve" listing-type="equation">R.sup.5 OH

where R⁵ represents a substituted or unsubstituted monovalent hydrocarbon group.