Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1988-12-09
1990-12-25
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C08F 2060
Patent
active
049804375
ABSTRACT:
The present invention relates to a process to improve the organoleptic behavior and the physical characteristics of leather by the use of aqueous solutions of copolymers of 90 to 20%-wt acrylic acid or methyacrylic acid, as well as 10 to 80%-wt of a monomer of the formula ##STR1## wherein R.sub.1 is hydrogen or methyl; R.sub.2 and R.sub.3, which are equal or different, are methyl or ethyl; x stands for an optionally branched alkylene radical with 1 to 5 carbon atoms; the amine nitrogen is optionally neutralized or quaternized; and the molecular weight of the copolymer, measured at a pH of 8.0, is less than 100,000. The concentration of the copolymer in the aqueous solution is 0.02 to 10%-wt, relative to the shaved weight of the leather.
REFERENCES:
patent: 3879205 (1975-04-01), Fitzgerald et al.
patent: 4717758 (1988-01-01), Ogawa et al.
Hartan Hans-Georg
Kaussen Manfred
Landscheidt Alfons
Stockhausen Dolf
Chemische Fabrik Stockhausen GmbH
Sarofin N.
Schofer Joseph L.
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