Vernon G Ammons

US Patent:

41015290, Jul 18, 1978

Filed:

Feb 4, 1976

Appl. No.:

5/655184

Inventors:

Vernon G. Ammons - Glenshaw PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C08G 1828

US Classification:

528 67

Abstract:

Polyurethane compositions characterized by being heat curable to yield hard, impact-resistant articles having a high heat distortion temperature are disclosed. The cured polyurethane articles are transparent and also hydrolytic and UV light stable as well as being abrasion resistant. The polyurethane is prepared from a cycloaliphatic polyisocyanate, low molecular weight active hydrogen-containing material and optionally a polycarbonate diol. The weight percentage of the urethane moieties and the crosslinked density are carefully controlled so as to provide the proper balance of physical properties, particularly between hardness, flexibility and heat distortion temperature. The polyurethane articles are particularly useful in glazing applications such as aircraft glazing.

US Patent:

40850927, Apr 18, 1978

Filed:

Sep 30, 1976

Appl. No.:

5/728372

Inventors:

Wen-Hsuan Chang - Gibsonia PA
Vernon G. Ammons - Glenshaw PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C08G 1864
C08G 1865
C08G 1875
B32B 2740

US Classification:

260 775AN

Abstract:

Energy-absorbing interlayers and glass laminates prepared therefrom for use as automobile windshields and other safety glass applications are disclosed. The interlayers are made from a poly(lactone-urethane) in which the molecular weight and structure of the lactone moiety is carefully controlled so as to get optimum energy-absorbing and optical properties.

US Patent:

43616925, Nov 30, 1982

Filed:

Sep 23, 1981

Appl. No.:

6/304777

Inventors:

Vernon G. Ammons - Glenshaw PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C08G 1830
C08G 1808

US Classification:

528 51

Abstract:

The use of an organic phosphorus acid compound to extend the pot life of urethane reaction mixtures is disclosed.

US Patent:

40241130, May 17, 1977

Filed:

Apr 28, 1976

Appl. No.:

5/681013

Inventors:

Vernon G. Ammons - Glenshaw PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C08G 1842
C08G 6362
B32B 2740

US Classification:

260 775AM

Abstract:

Energy-absorbing laminates for use as automobile windshields or other safety glass applications comprising a polycarbonate urethane and a sheet of glass are disclosed. The polyurethane is formed from a cycloaliphatic diisocyanate, a compound containing at least two active hydrogens per molecule and having a molecular weight below 250, and a special polycarbonate diol synthesized from a mixture of linear aliphatic and cycloaliphatic diols.

US Patent:

40355489, Jul 12, 1977

Filed:

Sep 30, 1976

Appl. No.:

5/728371

Inventors:

Wen-Hsuan Chang - Gibsonia PA
Vernon G. Ammons - Glenshaw PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C08G 1864
B32B 2740

US Classification:

428412

Abstract:

Energy-absorbing interlayers and glass laminates prepared therefrom for use as automobile windshields and other safety glass applications are disclosed. The interlayers are made from a poly(lactone-urethane) in which the molecular weight and structure of the lactone moiety is carefully controlled so as to get optimum energy-absorbing and optical properties.

US Patent:

39650570, Jun 22, 1976

Filed:

Feb 19, 1975

Appl. No.:

5/551188

Inventors:

Vernon G. Ammons - Glenshaw PA
James C. Vanek - New Kensington PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C08G 1830
B32B 2718
B32B 2740

US Classification:

260 18TN

Abstract:

An improved polyurethane composition useful as an interlayer for safety glass window applications such as bilayer motor vehicle windshields is disclosed. The polyurethane is specially formulated with an organic silane and an organic phosphorus acid to provide a controlled degree of adhesion to glass maintainable under a wide range Of humidity and temperature conditions, particularly higher temperature and humidity conditions, which are especially detrimental to the maintenance of adhesion. The controlled degree of adhesion between the polyurethane and the glass provides improved penetration resistance in glass-polyurethane safety glass laminates.

US Patent:

41030702, Jul 25, 1978

Filed:

Feb 11, 1977

Appl. No.:

5/767936

Inventors:

Vernon G. Ammons - Glenshaw PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

B32B 1710
B32B 2736
B32B 2740

US Classification:

428412

Abstract:

Energy-absorbing laminates for use as automobile windshields or other safety glass applications comprising a polycarbonate urethane and a sheet of glass are disclosed. The polyurethane is formed from a cycloaliphatic diisocyanate, a compound containing at least two active hydrogens per molecule and having a molecular weight below 250, and a special polycarbonate diol synthesized from a mixture of linear aliphatic and cycloaliphatic diols.

US Patent:

41316053, Dec 26, 1978

Filed:

Jan 3, 1978

Appl. No.:

5/866437

Inventors:

Vernon G. Ammons - Glenshaw PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C08G 1824

US Classification:

528 77

Abstract:

A transparent, elastomeric polyurethane which may be cast and cured in place at ambient temperature is prepared by the reaction of a cycloaliphatic diisocyanate with a polyalkylene ether glycol and a crosslinking agent in the presence of butyl stannoic acid catalyst.