Lawrence Hood

US Patent:

6355341, Mar 12, 2002

Filed:

Aug 31, 1999

Appl. No.:

09/387014

Inventors:

Bharat I. Chaudhary - Pearland TX
Russell P. Barry - Baden Wuertenburg, DE
Lawrence S. Hood - Saginaw MI
Chung P. Park - Baden-Baden, DE

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

B32B 326

US Classification:

4283148, 4283144, 428220, 428338, 521 81, 521 79, 521134, 521139

Abstract:

This invention pertains to a composition and a process for preparing a closed cell alkenyl aromatic polymer foam having enlarged cell size, comprising one or more alkenyl aromatic polymers, one or more substantially random interpolymers, one or more blowing agents having zero ozone depletion potential and optionally one or more co-blowing agents, and optionally, one or more nucleating agents and optionally, one or more other additives. This combination allows the manufacture of closed cell, low density alkenyl aromatic polymer foams of enlarged cell size, when blowing agents of relatively high nucleation potential are employed. When such blowing agents are used with alkenyl aromatic polymers in the absence of the substantially random interpolymers, small cell foams result.

US Patent:

6388014, May 14, 2002

Filed:

Apr 27, 2001

Appl. No.:

09/844003

Inventors:

Chung P. Park - Baden-Baden, DE
Rene Broos - Bornem, BE
Johan Thoen - Terneuzen, NL
Martin J. Guest - Lake Jackson TX
Yunwa W. Cheung - Lake Jackson TX
John J. Gathers - Pearland TX
Bharat I Chaudhary - Pearland TX
Lawrence S. Hood - Saginaw MI

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

C08L 2302

US Classification:

525191, 525216, 525222, 525227, 525228, 525232, 525236, 525237, 525240

Abstract:

A latex or fiber comprising a blend of polymeric materials consisting of one or more -olefin/ vinylidene monomer non-crosslinked substantially random interpolymers, wherein the distribution of the monomers of said interpolymers can be described by the Bernoulli statistical model or by a first or second order Markovian statistical model, and one or more homopolymers or copolymers of monomer components comprising aliphatic -olefins having from 2 to 20 carbon atoms, or aliphatic -olefins having from 2 to 20 carbon atoms and containing polar groups.

US Patent:

7919538, Apr 5, 2011

Filed:

Oct 15, 2007

Appl. No.:

11/974656

Inventors:

Chau V. Vo - Souffelweyersheim, FR
Lawrence S. Hood - Saginaw MI, US

Assignee:

Dow Global Technologies LLC - Midland MI

International Classification:

C08J 9/08
C08J 9/06
C08L 25/12

US Classification:

521 79, 521 81, 521139, 521146, 521147, 264 53, 264 55

Abstract:

Polymer foam containing styrene-acrylonitrile and containing one or more infrared attenuating agents achieves surprisingly high dimensional integrity at elevated temperatures.

US Patent:

8268904, Sep 18, 2012

Filed:

Sep 8, 2010

Appl. No.:

12/877166

Inventors:

Lawrence S. Hood - Midland MI, US
Brian H. Deshano - Sanford MI, US

Assignee:

Dow Global Technologies LLC - Midland MI

International Classification:

C08J 9/00

US Classification:

521 78, 521 81, 521139, 521146, 521147, 264 53, 264 55

Abstract:

Prepare an extruded polymeric foam using a thermoplastic polymer composition of styrene-acrylonitrile copolymer having a copolymerized acrylonitrile comonomer content of 20 weight-percent or less, a mean acrylonitrile comonomer content that exceeds its median acrylonitrile comonomer content and an average copolymerized acrylonitrile comonomer distribution having a breadth at half-height that is greater than 2. 5 weight-percent as measured at half peak height of a copolymerized acrylonitrile comonomer distribution curve for the styrene-acrylonitrile copolymer.

US Patent:

8324287, Dec 4, 2012

Filed:

Mar 30, 2009

Appl. No.:

12/933173

Inventors:

Lawrence S. Hood - Midland MI, US
Stephane Costeux - Midland MI, US
William A. Heeschen - Midland MI, US

Assignee:

Dow Global Technologies LLC - Midland MI

International Classification:

C08J 9/12
C08F 220/44

US Classification:

521 79, 521 81, 521139, 521146, 521147, 521 82, 264 53, 264 55

Abstract:

Prepare a polymeric foam from a foamable polymer composition containing a thermoplastic polymer composition and a blowing agent wherein 75 percent or more by weight of all non-halogenated polymers in the foamable polymer composition is a styrene-acrylonitrile copolymer composition having a polymerized acrylonitrile content distribution with a positive skew in a copolymerized AN content distribution and a positive percent difference between the mean and the median copolymerized AN content distribution.

US Patent:

20020111389, Aug 15, 2002

Filed:

Aug 14, 2001

Appl. No.:

09/929781

Inventors:

Bharat Chaudhary - Pearland TX, US
Lawrence Hood - Saginaw MI, US
Russell Barry - St Jansteen, NL

International Classification:

C08L001/00

US Classification:

521/139000

Abstract:

Foams made from a ternary blend of an alkenyl aromatic polymer such as polystyrene, an -olefin polymer such as polyethylene, and a substantially random interpolymer as compatibilizer, are used as cushion packaging. The cushion packaging foams are soft, dimensionally stable and exhibit good cushioning properties.

US Patent:

20020155270, Oct 24, 2002

Filed:

Jan 18, 2002

Appl. No.:

10/051695

Inventors:

Bharat Chaudhary - Pearland TX, US
Lawrence Hood - Saginaw MI, US
Russell Barry - Baden Wuertenburg, DE
Chung Park - Baden-Baden, DE

International Classification:

B32B003/26

US Classification:

428/305500, 428/304400

Abstract:

This invention pertains to a composition and a process for preparing a closed cell alkenyl aromatic polymer foam having enlarged cell size, comprising one or more alkenyl aromatic polymers, one or more substantially random interpolymers, one or more blowing agents having zero ozone depletion potential and optionally one or more co-blowing agents, and optionally, one or more nucleating agents and optionally, one or more other additives. This combination allows the manufacture of closed cell, low density alkenyl aromatic polymer foams of enlarged cell size, when blowing agents of relatively high nucleation potential are employed. When such blowing agents are used with alkenyl aromatic polymers in the absence of the substantially random interpolymers, small cell foams result.

US Patent:

20100099783, Apr 22, 2010

Filed:

Mar 13, 2008

Appl. No.:

12/531518

Inventors:

Van-Chau Vo - Souffelweyersheim, FR
Richard T. Fox - Midland MI, US
Warren H. Griffin - Saginaw MI, US
John Gordon-Duffy - La Wantzenau, FR
Lawrence S. Hood - Midland MI, US
Roy E. Smith - Midland MI, US

International Classification:

C08J 9/00

US Classification:

521 79

Abstract:

Prepare a closed-cell alkenyl aromatic polymer foam by an extrusion process using a blowing agent composition that contains at least 30 weight-percent of the chlorine-free hydrofluorocarbon blowing agent such that the foam has a density of 48 kilograms per cubic meter or less, contains more than 50 weight-percent styrene-acrylonitrile copolymer based on total polymer weight and at least eight weight-percent of a chlorine-free hydrofluorocarbon blowing agent that has a lower solubility in polystyrene than 1,1,2,2-tetrafluoroethane (HFC-134).