Reaction products of alpha-aminomethylene phosphonic acids and epoxy compounds and their use in coating compositions

• US 5,034,556 A
• Filed: 04/03/1989
• Issued: 07/23/1991
• Est. Priority Date: 04/03/1989
• Status: Expired due to Term

• Current Assignee: PPG Industries Incorporated Pittsburgh PA
• Original Assignee: PPG Industries Incorporated (Nouryon BV)
• Inventors: Kahle, Charles F. II
• Primary Examiner(s): Rivers, Diana
• Assistant Examiner(s): BERNHARDT, EMILY A
• Application Number:
  US07/333,355
• Time in Patent Office: 841 Days
• Field of Search: 558/158, 558/169, 558/155
• US Class Current: 558/155
• CPC Class Codes: C07F 9/3817 Acids containing the structure (RX)2P(=X)-alk-N...P (X = O, S, Se)
• CPC Class Codes: C08G 59/4071 phosphorus containing compounds
• CPC Class Codes: C08K 5/06 Ethers; Acetals; Ketals; Ortho-esters
• CPC Class Codes: C08K 5/5313 Phosphinic compounds, e.g. R2=P(:O)OR'
• CPC Class Codes: C09D 163/00 Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
• CPC Class Codes: C09D 5/024 characterised by the additives
• CPC Class Codes: C09D 5/033 characterised by the additives
• CPC Class Codes: C09D 5/38 Paints containing free metal not provided for above in groups C09D5/00 - C09D5/36
• CPC Class Codes: C09D 7/63 organic

Abstract

The disclosure is directed to a compound which is a reaction product of at least one phosphonic acid group of an alpha-aminomethylene phosphonic acid containing at least one group corresponding to the formula, ##STR1## with an epoxy group of a compound containing at least one epoxy group. The disclosure is also directed to waterborne coating compositions, organic solvent-borne coating compositions, and powder coating compositions containing the aforesaid reaction product.

Claims

1. A compound which is a reaction product of an alpha-aminomethylene phosphonic acid corresponding to the formula, ##STR6## wherein a=1, 2 or 3, a+b+c=3, and each R, which may be the same or different, is selected from the group consisting of alkyl, aryl, alkaryl, and aralkyl with an epoxy compound selected from the group consisting of polyglycidyl ethers of polyphenols and glycidyl ethers of aromatic alcohols;

the moles of epoxy groups to moles of replaceable hydrogen from the phosphonic acid groups being within the range of 1.0;

8.0 to 1.0;

1.0.

2. The compound of claim 1 which has been neutralized with ammonia or an amine.