Benzoate esters of hydroxyl terminated polyether polysiloxane copolyols and process for producing same

Patent 6552212 Issued on April 22, 2003. Estimated Expiration Date:

May 14, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Benzoate ester compositions
Patent #: 4275222
Issued on: 06/23/1981
Inventor: Scala, Jr.

Antiperspirant composition
Patent #: 4278655
Issued on: 07/14/1981
Inventor: Elmi

Fluid and semi-fluid compositions including benzoate esters
Patent #: 4293544
Issued on: 10/06/1981
Inventor: Elmi

Benzoic acid esters
Patent #: 4322545
Issued on: 03/30/1982
Inventor: Scala, Jr.

Benzoic acid ester
Patent #: 4323693
Issued on: 04/06/1982
Inventor: Scala, Jr.

Benzoic acid esters
Patent #: 4323694
Issued on: 04/06/1982
Inventor: Scala, Jr.

Siloxanes with betaine groups, their synthesis and use in cosmetic preparations
Patent #: 4654161
Issued on: 03/31/1987
Inventor: Kollmeier , et al.

Dimethicone copolyol sulfosuccinates
Patent #: 4717498
Issued on: 01/05/1988
Inventor: Maxon

Benzoic acid esters and their use
Patent #: 4791097
Issued on: 12/13/1988
Inventor: Walele , et al.

Sulfated silicone polymers
Patent #: 4960845
Issued on: 10/02/1990
Inventor: O'Lenick, Jr.

More ...

Inventors

Application

No. 854852 filed on 05/14/2001

US Classes:

556/437, The carbonyl is part of a -COO- group424/70.12, Silicon containing424/78.03, Skin cosmetic coating556/445Two carbons bonded directly to the same oxygen

Examiners

Primary: Shaver, Paul F.

Attorney, Agent or Firm

Weingram & Associates, P.C.

International Class

C07F 007/08

Abstract

Compositions of matter comprising benzoate esters of hydroxyl terminated polyether polysiloxane copolyols, in particular dimethicone copolyol benzoates, and process for preparing same. The benzoate esters are useful for personal care cleansing products, such as bar and liquid soaps, skin and hair care products and textiles and fibers. The compounds are prepared by reacting benzoic acid with hydroxyl terminated polyether polysiloxane copolyols.