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...
Patent
1989-12-26
1991-03-05
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...
524812, 524815, C08L 3900
Patent
active
049978950
ABSTRACT:
An aqueous dispersion of a cationic polymer is disclosed, which is obtained by reacting an ethylene copolymer comprising from 40 to 80% by weight of ethylene and from 20 to 60% by weight of at least one aminoalkyl acrylamide comonomer represented by formula (I): ##STR1## wherein R.sub.1 represents a hydrogen atom or a methyl group; R.sub.2 and R.sub.3 each represents a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms; and n represents an integer of from 2 to 4, and having a melt index, as measured in accordance with JIS K-6760, of from 10 to 1,000 g/10 min with hydrochloric acid in water to form a quaternary salt and subsequently reacting the resulting quaternary salt with an epihalohydrin compound through addition reaction. The aqueous dispersion provides a coating film having an improved electrical conductivity or produces effects to simultaneously improve degree of sizing and wet strength of paper.
REFERENCES:
patent: 4318956 (1982-03-01), Stevens
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Communication and European Search Report Dated Dec. 28, 1989.
JIS (Japaness Industrial Standard) entitled "Testing Methods For Polyethylenes", JIS K 6760-1981, Translated and Published by Japanese Standards Association.
JIS (Japanese Industrial Standard) entitled "Testing Method for Melt Flow Rate of Thermoplastics", JIS K 7210-1976, Translated and Published by Japanese Standards Association.
Asao Kouichiro
Kondo Norio
Mashita Kentaro
Ohmae Tadayuki
Sakurai Tadashi
Reddick J. M.
Schofer Joseph L.
Sumitomo Chemical Company Limited
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