Formulations For Reaction Injection Molding And For Spray Systems
AssigneeAlbemarle Corporation
InventorsWilliam R. Brown, Paul L. Wiggins, John Y. Lee
Life of this patent
Estimating the term…
Abstract
This invention provides articles made by reaction injection molding and spray coatings, and processes for forming such articles and coatings. The coatings and articles are polyureas or polyurea-urethanes. The ingredients used to form the coatings and articles comprise at least (A) an aromatic polyisocyanate and (B) a mixture formed from components comprised of (i) at least one polyol and/or at least one polyetheramine, (ii) an aromatic primary diamine, and (iii) an aliphatic secondary diamine which has about twelve to about forty carbon atoms and in which the having amino hydrocarbyl groups are secondary or tertiary hydrocarbyl groups.
Claims22
A spray coating which is formed from ingredients comprising at least (A) an aromatic polyisocyanate;
- and (B) a mixture formed from components comprised of
- (i) at least one polyol and/or at least one polyetheramine,
- (ii) an aromatic primary diamine, and
- (iii) an aliphatic secondary diamine which has about twelve to about forty carbon atoms, has amino hydrocarbyl groups that are secondary or tertiary hydrocarbyl groups, and has a hydrocarbyl portion which is a straight chain.
A process for forming a spray coating, which process comprises bringing together at least
- (A) at least one aromatic polyisocyanate;
- and
- (B) a mixture formed from components comprised of
- (i) at least one polyol and/or at least one polyetheramine,
- (ii) an aromatic primary diamine, and
- (iii) an aliphatic secondary diamine which has about twelve to about forty carbon atoms, has amino hydrocarbyl groups that are secondary or tertiary hydrocarbyl groups, and has a hydrocarbyl portion which is a straight chain;
- and spraying said mixture onto a surface.
(canceled)
An article formed by reaction injection molding, which article is formed from ingredients comprising at least (A) an aromatic polyisocyanate and (B) a mixture formed from components comprised of
- (i) at least one polyol and/or at least one polyetheramine,
- (ii) an aromatic primary diamine, and
- (iii) an aliphatic secondary diamine which has about twelve to about forty carbon atoms and in which the having amino hydrocarbyl groups are secondary or tertiary hydrocarbyl groups.
A process for preparing a reaction injection molding product, which process comprises
- I) bringing together at least (A) an aromatic polyisocyanate and (B) a mixture formed from components comprised of
- (i) at least one polyol and/or at least one polyetheramine,
- (ii) an aromatic primary diamine, and
- (iii) an aliphatic secondary diamine which has about twelve to about forty carbon atoms and in which the having amino hydrocarbyl groups are secondary or tertiary hydrocarbyl groups,
- forming a molding mixture;
- II) injecting said molding mixture formed in I) into a mold to form a molded product;
- and
- III) opening the mold and removing the product formed in II).
22-23. (canceled)
Dependencies are inferred from the claim text.