Low yellowing scorch inhibitor composition
AssigneeR.T. Vanderbilt Company, Inc.
InventorJohn Matthew DeMassa
Life of this patent
Estimating the term…
Abstract
A scorch inhibitor composition for use an additive in the manufacture of polyurethane foams is based on a derivatized phenol, 4-tertbutyl catechol, and optionally, phenothiazine. The derivatized phenol is a di-tert-butyl phenol, preferably a 2,6 tert-butyl phenol substituted at least at the 4-position with an aliphatic, aromatic or aliphatic-aromatic moiety, of C2 or greater. Preferably, the phenol is a liquid, and is chosen from among 2,6 di-tert-butyl-4-isobutyl phenol; 2,6 di-tert-butyl-4-nonyl phenol; and benzenepropanoic acid, 3,5-bis(1,1-dimethyl-ethyl)-4-hydroxy-.C7-C9 branched alkyl esters. The phenol may optionally possess combinations of heteroatoms, such as O, N, P or S, and may be dimerized.
Claims16
A scorch inhibitor composition for use an additive in the manufacture of polyurethane foams, comprising:
- a derivatized di-tert-butyl phenol, substituted with an aromatic,
- aliphatic or aromatic-aliphatic moiety of C2 or greater, the moiety optionally possessing combinations of heteroatoms, which optionally may be dimerized,
- 4-tertbutyl catechol, and
- optionally, phenothiazine.
Dependencies are inferred from the claim text.