Micro-emulsified glyoxalated acrylamide polymers

• US 4,954,538 A
• Filed: 12/19/1988
• Issued: 09/04/1990
• Est. Priority Date: 12/19/1988
• Status: Expired due to Term

• Current Assignee: Kemira Oyj
• Original Assignee: American Colloid Company (Minerals Technologies Incorporated)
• Inventors: Schmitt, Joseph M., Dauplaise, David L., Kozakiewicz, Joseph J.
• Primary Examiner(s): Schofer, Joseph L.
• Assistant Examiner(s): McDonald, Jr., Thomas
• Application Number:
  US07/286,091
• Time in Patent Office: 624 Days
• Field of Search: 523/223, 525/379, 525/328.4, 525/329.4, 524/829, 526/306
• US Class Current: 523/223
• CPC Class Codes: C08F 2/46 Polymerisation initiated by wave energy or particle radiation
• CPC Class Codes: C08F 220/56 Acrylamide; Methacrylamide
• CPC Class Codes: C08F 226/02 by a single or double bond to nitrogen
• CPC Class Codes: C08F 226/10 N-Vinyl-pyrrolidone
• CPC Class Codes: C08F 2810/20 leading to a crosslinking, either explicitly or inherently
• CPC Class Codes: C08F 8/28 Condensation with aldehydes or ketones

Abstract

Compositions comprising microparticles of a cross-linkable, glyoxalated (meth) acrylamide containing, polymeric material are disclosed. They are prepared using inverse microemulsion polymerization techniques and are useful as wet- and dry-strength agents in paper production.

Claims

1. A composition comprising microparticles of a glyoxylated (meth)acrylamide-containing polymeric material having (1) sufficient glyoxal-reactive amide substituents and --CHOHCHO substituents to continually self cross-link said material at ambient conditions, said --CHOHCHO substituents being present in a excess of about 0.5 weight percent and (2) diameters ranging from about 200 to about 3000 Å

.

2. A composition as defined in claim 1 wherein said --CHOHCHO substituents are present in excess of about 1.0 weight percent.

3. A composition as defined in claim 2 wherein said --CHOHCHO substituents are present in excess of about 5.0 weight percent.

4. A composition as defined in claim 1 wherein said diameters range from about 300 to about 2000 Å

.

5. A composition as defined in claim 1 wherein said diameters range from about 350 to about 1000 Å

.

6. A composition as defined in claim 1 wherein said polymeric material is a copolymer of a (meth) acrylamide and a cationic monomer copolymerizable therewith.

7. A composition as defined in claim 6 wherein said cationic comonomer comprises a diallyl dialkylammonium chloride, an N,N-dialkylaminoalkyl (meth)acrylate;

an N,N-dialkylaminoalkyl(meth)acrylamide and salts quaternaries or mixtures thereof.

8. A composition as defined in claim 1 wherein said (meth)acrylamide monomer comprises acrylamide;

methacrylamide;

an N-alkyl acrylamide, an N-alkyl methacrylamide or mixtures thereof.

9. A composition as defined in claim 1 wherein said (meth)acrylamide polymer comprises a copolymer of acrylamide and a diallyldialkylammonium chloride.