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Polybenzoxazine composition

Technology of a polymer composition, benzoxazine, applied in the field of preparation of polymer

Active Publication Date: 2015-07-15
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resulting polybenzo Oxyzine-epoxy hybrids still retain many of the limitations of epoxies, necessitating giving up many of their valuable properties (such as the toughness of epoxies)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example

[0158] All parts, percentages, ratios, etc. in the examples are by weight unless otherwise indicated.

[0159] The amount of catalyst used in the binder is determined by equivalents (eq) based on the number of moles of reactive groups per mole of reactant molecules, for example, 2 equivalents of a difunctional reactant represents one mole of that reactant, and one A mole of trifunctional reactant would represent 3 equivalents of that reactant. The catalyst was treated as a monofunctional catalyst.

[0160] A double dash symbol in the table indicates that the sample was not tested.

[0161] Materials were purchased from Sigma-Aldrich, Milwaukee, WI unless otherwise stated.

[0162] testing method

[0163] Differential Scanning Calorimetry (DSC Analysis) of Curing

[0164] The thermal properties of the composition during curing were determined by placing an amount of the composition in an open aluminum pan in a differential scanning calorimeter (DSC) and heating from 25°...

example 1

[0215] Powders of finely ground BZ-1 (23.1) and sulfur (3.2 grams) were mixed in an equimolar ratio and stirred and shaken in a Wig-L-Bug shaker for approximately 1 minute. Approximately 15.4 milligrams (mg) of the mixture was heated to 320°C in a DSC (Seiko) as described above. The DSC trace showed an exotherm with a high temperature peak at about 211°C, a cure onset temperature of about 140°C, and a total energy released during cure of 221 J / gram. The trace also shows a less sharp endotherm with a peak at about 113°C, which corresponds to the recorded melting point of sulfur.

example 2

[0217] BZ-2 (33.3 grams) and finely ground sulfur (3.2 grams) were mixed in an equimolar ratio and stirred vigorously for about 1 minute. Approximately 20.3 mg of the mixture was heated to 320°C in DSC as described in Example 1. The DSC trace shows an exotherm with double high temperature peaks at about 170°C and 225°C and a cure onset temperature of about 130°C. The total energy released during curing was 221 J / gram. The trace also shows a less sharp endotherm with a peak at about 113°C, which corresponds to the recorded melting point of sulfur.

[0218] Comparative Examples C1–C2

[0219] About 4.4 mg of BZ-1 (C1 ) and about 12.0 mg of BZ-2 (C2) were heated to 320° C. in DSC as described in Example 1 . The respective DSC traces of C1 and C2 showed peak exothermic temperatures of 240°C and 246°C, curing onset temperatures of 190°C and 190°C, and energy released during curing of 323 and 113 J / g, respectively.

[0220] Examples 3-8, Comparative Example C1A

[0221] Fin...

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Abstract

A polymerizable composition comprising a benzoxazine compound and a catalyst is described. The polymerizable composition may be cured to produce compositions useful in coating, sealants, adhesive and many other applications.

Description

technical field [0001] The present invention describes a method for preparing poly(benzo oxazine) method. Background technique [0002] Benzo oxazines and benzos Compositions of Benzoxazines are known (see e.g. U.S. Patents 5,543,516 and 6,207,786 to Ishida et al; Resins”, Polymer, 41, 7941-49 (2000) (S.Rimdusit and H.Ishida, “based on benzo Development of a new class of electronic packaging materials based on the ternary system of oxazine, epoxy resin and phenolic resin", Polymers, Vol. 41, pp. 7941-7949, 2000); and H.Kimura et al., "New Thermosetting Resin from Bisphenol A-based Benzoxazine and Bisoxazoline", J.App.Polym.Sci., 72, 1551-58 (1999) (H.Kimura et al., "From Bisphenol A-based Benzoxazine and Bisoxazoline zine and bis oxazolines", Journal of Applied Polymer Science, Vol. 72, pp. 1551-1558, 1999). [0003] US Patent 7,517,925 (Dershem et al.) describes benzo oxazine compounds and benzos A thermosetting resin composition prepared from an oxazine co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08G73/06C08K5/357C08L79/02C08L79/04C08L51/04
CPCC08K5/357C08L79/04C08L51/04C08G67/00C08G73/0233C08G73/06C08G65/26C08L79/02C08G65/2612C08G65/2627C09D179/04C09J179/04
Inventor D·萨尔尼科夫I·格罗迪舍R·J·韦布
Owner 3M INNOVATIVE PROPERTIES CO
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