Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1982-03-08
1983-08-30
Levin, Stanford M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
81156, 81157, 4273899, C08F 834
Patent
active
044018363
ABSTRACT:
Polyvinyl alcohol modified by reaction with formaldehyde and amidosulfonic acid at a pH value of 4 to 7, which value is established by the addition of an organic amine. This modified polyvinyl alcohol is suitable for use as a sizing agent for yarns.
REFERENCES:
patent: 2434145 (1948-01-01), Coffman
patent: 4013805 (1977-03-01), Corey et al.
Engelhardt Friedrich
Kleber Rolf
Hoechst Aktiengesellschaft
Levin Stanford M.
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