Stabilization of polymer blends with metal nitrites
An alkali metal or alkaline earth metal nitrite is added to a polymer blend comprising (1) block copolymer formed from monovinyl-substituted aromatic hydrocarbon monomer and a conjugated diene monomer and (2) styrene polymer to improve thermal stability and to inhibit gel and fisheye formation.
Description
Patent History
Patent number: T103702
Type: Grant
Filed: Aug 2, 1982
Date of Patent: Dec 6, 1983
Inventors: Kenneth W. Willcox (Bartlesville, OK), James N. Short (Bartlesville, OK)
Application Number: 6/403,982
Type: Grant
Filed: Aug 2, 1982
Date of Patent: Dec 6, 1983
Inventors: Kenneth W. Willcox (Bartlesville, OK), James N. Short (Bartlesville, OK)
Application Number: 6/403,982
Classifications
Current U.S. Class:
Nitrogen Directly Bonded To An Oxygen Atom, E.g., Nitric Acid, Etc. (524/429);
Atom Other Than Si, O, H, Al, Fe, Or A Group Ia Or Iia Metal Atom Dnrm, E.g., Slag, Mineral Wool, Etc. (524/443);
Group Iia Metal Atom Dnrm (524/456);
From At Least One Oxygen Or Nitrogen-containing Reactant (524/612);
Mixture Contains Solid Block Or Block-type Copolymer Derived From Ethylenically Unsaturated Hydrocarbon Reactants Only At Least One Of Which Contains At Least Four Carbon Atoms (525/95)
International Classification: C08K 32 8; C08K 310;
International Classification: C08K 32 8; C08K 310;
