IP Library › Granted Patent US 9,631,046
Granted Patent B2
US 9,631,046 · App. 14/408,077 · Granted Apr 25, 2017

Fast curing agents for epdxy resins

Inventor: Markus Schroetz (Ochsenhausen, DE)
Assignee: BLUE CUBE IP LLC
C08G59/1477C08G59/184C08G59/50C08G59/685C08L63/00C09D5/002C09D163/00
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Quick Facts
Patent No.
US 9,631,046
App. No.
14/408,077
Granted
Apr 25, 2017
Kind
B2
Abstract

A hardener composition comprising a) an accelerator comprising a first amine at least partially neutralized by salicylic acid and a first modifier; b) a non-isolated adduct of i) a difunctional epoxy; and ii) a second amine; and c) a second modifier, and a process for making the hardener composition, are disclosed. The hardener can be used with an epoxy resin to form a curable composition.

Claims (29)

1. A hardener composition comprising:

a) an accelerator comprising a first amine at least partially neutralized by salicylic acid and a first modifier;

wherein said first modifier is styrenated phenol;

b) a non-isolated adduct of

i). a difunctional epoxy and

ii). a second amine;

c) a second modifier;

wherein the second modifier is a branched or unbranched mid chain fatty alcohols having from 12 to 20 carbon atoms per molecule and mixtures thereof or polyethylene, propylene or butylene glycols, or mixtures thereof from 2 to 15 monomer units and their mono- and di- alkyl or aryl ethers; and

d) a third amine.

2. A hardener composition in accordance with claim 1 of the preceding claims wherein said difunctional epoxy is selected from the group consisting of bisphenol A diglycidylether, bisphenol F diglycidylether, and mixtures thereof.

3. A hardener composition in accordance with claim 1 of the preceding claims wherein said first amine is cycloaliphatic.

4. A hardener composition in accordance with claim 1 of the preceding claims wherein said second amine is an araliphatic polyamine.

5. A hardener composition in accordance with claim 1 wherein the accelerator is present in an amount in the range of from 30 weight percent to 90 weight percent, the non-isolated adduct is present in an amount in the range of from 1 weight percent to 75 weight percent, and the second modifier is present in an amount in the range of from 5 weight percent to 25 weight percent, based on the total weight of the composition.

6. A curable composition comprising:

I) the hardener composition of claim 1 ; and

II) an epoxy resin selected from the group consisting of liquid bisphenol-A diglycidyl ethers, liquid bisphenol-F diglycidyl ethers, liquid epoxy novolacs, solid bisphenol-A, and combinations thereof.

7. A primer prepared using the curable composition of claim 6 .

8. A process comprising:

a) contacting a first modifier with salicylic acid to form a slurry; wherein the first modifier is styrenated phenol;

b) contacting a molar excess of a first amine with the slurry under reaction conditions to form an accelerator; and

c) admixing the accelerator with

i) a non-isolated adduct of a difunctional epoxy and a second amine; and

ii) a second modifier; wherein the second modifier is selected from the group consisting of branched or unbranched mid chain fatty alcohols having from 12 to 20 carbon atoms per molecule and mixtures thereof or polyethylene, propylene or butylene glycols, or mixtures thereof from 2 to 15 monomer units and their mono- and di- alkyl or aryl ethers to form a hardener composition; and

iii) a third amine.

9. A process in accordance with claim 8 wherein said reaction conditions include a reaction temperature of under 100° C.

10. A process in accordance with claim 8 wherein said first modifier and said second modifier are selected from the group consisting of araliphtic phenols, branched or unbranched mid chain fatty alcohols having from 12 to 20 carbon atoms per molecule and mixtures thereof.

11. A process in accordance with claim 8 wherein said difunctional epoxy is selected from the group consisting of bisphenol A diglycidylether, bisphenol F diglycidylether, and mixtures thereof.

12. A process in accordance with claim 8 wherein said first amine is cycloaliphatic.

13. A process in accordance with claim 8 wherein said second amine is an araliphatic polyamine.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 24, 2015
From: DOW GLOBAL TECHNOLOGIES LLC
To: BLUE CUBE IP LLC
Reel/Frame 036397/0972 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 11, 2015
From: SCHROETZ, MARKUS
To: UPPC GMBH
Reel/Frame 036300/0287 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 11, 2015
From: UPPC GMBH
To: THE DOW CHEMICAL COMPANY
Reel/Frame 036300/0343 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 11, 2015
From: THE DOW CHEMICAL COMPANY
To: DOW GLOBAL TECHNOLOGIES LLC
Reel/Frame 036300/0415 →
Continuity (2)
Provisional Application 61683883 · Aug 16, 2012
Related Publication 20150175739A1 · Jun 25, 2015