Terminal amine-containing polypivalolactone

• US 4,026,916 A
• Filed: 03/15/1976
• Issued: 05/31/1977
• Est. Priority Date: 03/15/1976
• 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: Hertler, Walter Raymond
• Primary Examiner(s): Anderson, Harold D.
• Assistant Examiner(s): Nielsen, E. A.
• Application Number:
  US05/667,280
• Time in Patent Office: 442 Days
• Field of Search: 260/78 A, 260/484 A, 260/78.3 R, 260/471 R, 260/482 R
• US Class Current: 528/359
• CPC Class Codes: C08G 63/6852 derived from hydroxy carboxylic acids
• CPC Class Codes: C08G 69/44 Polyester-amides
• CPC Class Codes: C08G 81/00 Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers involving only carbon-to-carbon unsaturated bond reactions C08F299/00 ; polyester-amides C08G69/44; polyester-imides C08G73/16; polyamides-imides C08G73/14; block- or graft polymers containing polysiloxane sequences C08G77/42
• CPC Class Codes: C08L 2666/04 Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
• CPC Class Codes: C08L 35/02 Homopolymers or copolymers of esters C08L35/06, C08L35/08 take precedence
• CPC Class Codes: C08L 67/04 Polyesters derived from hydroxycarboxylic acids, e.g. lactones C08L67/06 takes precedence

Abstract

Terminal amine-containing polypivalolactones of the formula ##STR1## IN WHICH R is H or lower alkyl,

Y is ##STR2## where P IS 1 TO 5, AND

A is an aromatic hydrocarbon,

n is 2 to about 1000,

m is 0 or 1, and

X is H, alkali metal or R'"'"'₄ N where R'"'"' is lower alkyl are useful for preparing block copolymers and graft copolymers. These terminal amine-containing polypivalolactones are prepared by polymerizing pivalolactone in the presence of a nitrogen-containing initiator such as a tetraalkylammonium p-aminophenylacetate.

Claims

1. A terminal amine-containing polypivalolactone of the formula ##STR8## in which R is H or lower alkyl,

Y is ##STR9## where p is 1 to 5, and

A is phenylene, (lower alkyl)phenylene, di(lower alkyl)phenylene, naphthylene or biphenylene,

n is 2 to 1000,

m is 0 or 1, and

X is H, alkali metal or R'"'"'₄ N where R'"'"' is lower alkyl.

2. The terminal amine-containing polypivalolactone of claim 1 in which

R is H

Y is ##STR10## and X is R'"'"'₄ N--.

3. The terminal amine-containing polypivalolactone of claim 2 in which

Y is ##STR11## and R'"'"' is butyl.

4. The method of preparing a terminal amine-containing polypivalolactone of claim 1 which comprises polymerizing pivalolactone in the presence of nitrogen-containing initiator of the formula ##STR12## in which R is H or lower alkyl,

Y is ##STR13## where p is 1 to 5, and

A is phenylene, (lower alkyl)phenylene, di(lower alkyl)phenylene, naphthylene or biphenylene,

m is 0 or 1, and

X is H, alkali metal or R'"'"'₄ N where R'"'"' is lower alkyl, provided that

when m is 0, X is H, and

when m is 1, X is alkali metal or R'"'"'₄ N,

at a temperature of -10°

to 120°

C.

5. The method of claim 4 in which the initiator is a tetra(lower alkyl)ammonium aminoaryl(lower alkan)oate.

6. The method of claim 5 in which the initiator is tetrabutylammonium p-aminophenylacetate.