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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 4877829 B1

PDFFull Text
Date of Patent:
Oct. 31, 1989

Filed:

May. 19, 1988

Liquid coatings for bridge deckings and the like

Applicant:
Inventors:

Cung Vu, Gaithersburg, MD (US);

Timothy J Martin, Loxwood, GB;

Andrew M Gillanders, Finchampstead, GB;

Bassam Sbaiti, Burnham, GB;

Assignee:

W. R. Grace & Co.-Conn., Columbia, MD (US);

Attorneys:

Cross; Charles A.

McDowell, Jr.; W. W.

Primary Examiner:

Maurice J Welsh

Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
524729 ; 524783 ; 525123 ; 525129 ; 525130 ; 528 745 ; 427136 ; 427138 ; 4273855 ; 4273881 ; 4284231 ; 4284255 ;
Abstract

Novel polyurethane formulations especially useful as membranes for the protection of bridge deckings. The polyurethane is prepared by mixing two components, A and B. Component A comprises castor oil, a low molecular weight polyol having a molecular wieght between 92 and about 200, preferably with an elastomer. Component B is a modified MDI, being either (i) a mix of 4,4'- and 2,4'-isomers of diphenylmethane diisocyanate or (ii) a diphenylmethane diisocyanate and its reaction product with a low molecular weight poly(oxyalkylene).

Find Patent Forward Citations

Vu, Cung. (1989). Liquid coatings for bridge deckings and the like (U.S. Patent No. 4877829). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4877829

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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