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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 5324787 B1

PDFFull Text
Date of Patent:
Jun. 28, 1994

Filed:

Nov. 18, 1992

Modification of poly (vinylamine)

Applicant:
Inventors:

Robert K Pinschmidt, Jr, Allentown, PA (US);

John G Smigo, Macungie, PA (US);

Andrew F Nordquist, Whitehall, PA (US);

Assignee:

Air Products and Chemicals, Inc., Allentown, PA (US);

Attorneys:

Rodgers; Mark L.

Marsh; William F.

Primary Examiner:

Bernard Lipman

Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
5153282 ; 5253284 ; 525385 ;
Abstract

Poly(vinylamine) homopolymers and copolymers are hydrophobically modified by reaction of amine units present in the polymer with a saturated aliphatic or aromatic glycidyl ether compound. The resulting polymers are useful as flocculants in separating water from suspended solids and are especially effective in improving fines retention in papermaking. Poly(vinylamine hydrochloride) modified in this manner with butyl glycidyl ether is shown to be very efficient in retaining the paper product fines present in recycle paper pulps.

Find Patent Forward Citations

Pinschmidt, Jr, Robert. (1994). Modification of poly (vinylamine) (U.S. Patent No. 5324787). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5324787

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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