Paper sizing agents, the manufacture and use of same

Details Paper sizing agents, the manufacture and use of same Paper sizing agents, the manufacture and use of same

1987-05-07

1989-06-13

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

5253276, C08L 3700

Patent

active

048394157

ABSTRACT:
Cationic sizing agents for paper are manufactured by reaction of alpha-olefins with maleix anhydride, imidation of the resulting copolymer with a polyamine having at least one tertiary and one primary amino group, and quaternization of the imide with epichlorohydrin in the presence of water. Copolymers with an average molecular weight of 3000 to 30,000 are used for the conversion into imide. 1 to 50% of the amino groups of the resulting polymeric imide-amine are neutralized with an acid; after partial neutralization, the mixture is diluted with water to a 5 to 50 weight-% emulsion, then quaternized with epichlorohydrin. The sizing agent is especially suitable as a surface-sizing agent and for the sizing of paper from secondary fibers.

REFERENCES:
patent: 2926116 (1960-02-01), Keim
patent: 2961347 (1960-11-01), Floyd
patent: 2977334 (1961-03-01), Zopf et al.
patent: 3332901 (1967-07-01), Keim
patent: 3583948 (1971-06-01), Blechinger
patent: 4065608 (1977-12-01), Beck et al.
patent: 4075177 (1978-02-01), Bonnet et al.
patent: 4226749 (1980-10-01), Veaute
patent: 4287110 (1981-09-01), Takagishi et al.
patent: 4336835 (1982-06-01), Takagishi et al.
patent: 4381367 (1983-04-01), von Bonin et al.
patent: 4423194 (1983-12-01), Loet al.

Affiliated with

Also associated with

Rating

Paper sizing agents, the manufacture and use of same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Paper sizing agents, the manufacture and use of same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Paper sizing agents, the manufacture and use of same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1278218