Hydrophilic fine gel particles and process for production thereo

Details Hydrophilic fine gel particles and process for production thereo Hydrophilic fine gel particles and process for production thereo

1989-03-28

1991-01-29

Schofer, Joseph L.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

5263076, B32B 516, C08F22602

Patent

active

049885685

ABSTRACT:
Hydrophilic fine gel particles, said particles being crosslinked polymer particles comprising 20-94.8% by weight of a monoethylenically unsaturated amide monomer, 5-60.0% by weight of a crosslinkable ethylenically unsaturated monomer, 0.1-30% by weight of an ethylenically unsaturated carboxylic acid, 0.1-50% by weight of an ester monomer of an acrylic or methacrylic acid, and 0-30% by weight of a monomer copolymerizable with the above-mentioned monomers, said particles having a particle diameter in a water-swollen state of 0.1-10 .mu.m and a weight-average particle diameter
umber-average particle diameter ratio of 1.2 or less; and a process for producing hydrophilic fine gel particles having a particle diameter in a water-swollen state of 0.1-10 .mu.m and a weight-average particle diameter
umber-average particle diameter ratio of 1.2 or less, which comprises copolymerizing a monomer mixture of 20-94.8% by weight of a monoethylenically unsaturated amide monomer, 5-60.0% by weight of a crosslinkable ethylenically unsaturated monomer, 0.1-30% by weight of an ethylenically unsaturated carboxylic acid, 0.1-50% by weight of an ester monomer of an acrylic or methacylic acid, and 0-30% by weight of a monomer copolymerizable with the above-mentioned monomers using a radical polymerization initiator in a solvent which dissolves these monomers but does not dissolve the resulting polymer.

REFERENCES:
patent: 3711574 (1973-01-01), Jaworek et al.
patent: 3929739 (1975-12-01), Barabes et al.
patent: 4722958 (1988-02-01), Sauer et al.
patent: 4748220 (1988-05-01), Hartmann et al.

Affiliated with

Also associated with

Rating

Hydrophilic fine gel particles and process for production thereo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydrophilic fine gel particles and process for production thereo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrophilic fine gel particles and process for production thereo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-812726