Polymeric materials with substituted urea end groups

• US 4,032,698 A
• Filed: 10/29/1975
• Issued: 06/28/1977
• Est. Priority Date: 02/02/1973
• Status: Expired due to Term

• Current Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Original Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Inventors: Ashe, Thomas A.
• Primary Examiner(s): Anderson, Harold D.
• Application Number:
  US05/626,754
• Time in Patent Office: 608 Days
• Field of Search: 260/78 A, 260/78 UA, 260/77.5 R, 260/77.5 MA, 260/77.5 AP, 260/77.5 AT, 260/77.5 A, 260/77.5 CR, 260/77.5 AM, 260/78.41 , 260/79.5 R, 260/79.5 C, 260/79.5 NV, 526/11.1, 526/14, 526/29, 526/30, 526/49, 526/56
• US Class Current: 525/126
• CPC Class Codes: C08F 8/30 Introducing nitrogen atoms or nitrogen-containing groups
• CPC Class Codes: C08G 18/10 Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• CPC Class Codes: C08G 18/2865 Compounds having only one primary or secondary amino group; Ammonia
• CPC Class Codes: C08G 18/32 Polyhydroxy compounds; Polyamines; Hydroxyamines
• CPC Class Codes: C08G 18/3838 containing cyano groups
• CPC Class Codes: C08G 18/384 containing nitro groups
• CPC Class Codes: C08G 18/3851 containing three nitrogen atoms in the ring
• CPC Class Codes: C08G 18/62 Polymers of compounds having carbon-to-carbon double bonds
• CPC Class Codes: C08G 18/678 containing nitrogen

Abstract

Polymeric materials represented by the general structure ##STR1## WHERE Q is a polymeric segment of ethylenically unsaturated monomers, lacking Zerewitinoff hydrogen atoms;

X is the residue of a chain transfer agent;

Y is the residue of a di-, tri- or tetraisocyanate radical after removal of isocyanate groups;

A is the residue of a basic radical which, as an entity before reaction, has a pk_a value of 5-14, or a salt thereof, and

m and n are 1, 2 or 3 (the total not exceeding 4), are useful as pigment dispersing aids in coating compositions.

Claims

1. A polymeric material represented by the structure ##STR25## where Q is a resinous polymeric or copolymeric segment of

(a) an ester of acrylic acid or methacrylic acid with an alkanol of 1-18 carbon atoms;

(b) styrene or acrylonitrile;

(c) a vinyl ester whose ester moiety contains 2-18 carbon atoms;

or

(d) a vinyl ether;

X is the residue of a chain transfer agent;

Y is the residue of a di-, tri-, or tetraisocyanate radical after removal of isocyanate groups;

A is the residue of a basic radical which, as an entity before reaction, has a pk_a value of 5-14, or a salt thereof; and

m and n are 1, 2 or 3, the total not exceeding 4, provided that when n is 2 or 3, only one of A need be as defined.

2. The polymeric material of claim 1 wherein A is an amino-, hydroxy- or mercapto substituted amine or amine salt radical.

3. The polymeric material of claim 1 wherein A is a radical of the formula ##STR26##

4. The polymeric material of claim 1 wherein Q is a polymeric segment one of whose monomer units is methyl methacrylate.

5. The polymeric material of claim 1 wherein Q is a copolymeric segment of methyl methacrylate and an ester of acrylic acid or methacrylic acid with an alkanol of 2-12 carbon atoms.

6. The polymeric material of claim 1 wherein Q is a methyl methacrylate/2-ethylhexyl acrylate copolymeric segment.

7. The polymeric material of claim 1 wherein X is

8. The polymeric material of claim 1 where Y is ##STR28##

9. A polymeric material represented by the structure ##STR29## where Q is a resinous methyl methacrylate/2-ethylhexylacrylate polymeric segment.