Shao R Guo from Havertown, PA, age 56

Us Patents

Organic Liquid Absorbent Compositions Based On Phosphonic Acid-Containing Polymers And Di- Or Polyamines
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US Patent:

52740501, Dec 28, 1993
Filed:

Mar 26, 1993
Appl. No.:

8/038586
Inventors:

Shao H. Guo - West Chester PA
Roger A. Grey - West Chester PA
Assignee:

ARCO Chemical Technology, L.P. - Wilmington DE
International Classification:

C08F 832
C08F 3002
US Classification:

525381
Abstract:

Compositions useful as absorbents for organic liquids are disclosed. A diamine or polyamine is reacted with a polymeric resin that contains phosphonic acid groups to produce the absorbent compositions of the invention. Because the polymeric resin component can be combined with the amine either before or after combination with the organic liquid, the absorbents of the invention can be used in many forms. The polymeric resin component can be processed into any desired form (shaped article, solution), and the di- or polyamine can then be added to generate the absorbent in situ. Unlike spent absorbent compositions of the prior art, those of the invention can be converted to pumpable liquids by heating or by adding a gel-breaking agent to liquify the gel. A useful absorbent is recovered from the liquid by precipitation or distillation.

Organic Liquid Absorbent Compositions Based On Phosphonic Acid-Containing Polymers And Di- Or Polyamines
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US Patent:

52370283, Aug 17, 1993
Filed:

Dec 12, 1991
Appl. No.:

7/806955
Inventors:

Shao H. Guo - West Chester PA
Roger A. Grey - West Chester PA
Assignee:

ARCO Chemical Technology, L.P. - Wilmington DE
International Classification:

C08F 3002
C08F 832
US Classification:

526278
Abstract:

Compositions useful as absorbents for organic liquids are disclosed. A diamine or polyamine is reacted with a polymeric resin that contains phosphonic acid groups to produce the absorbent compositions of the invention. Because the polymeric resin component can be combined with the amine either before or after combination with the organic liquid, the absorbents of the invention can be used in many forms. The polymeric resin component can be processed into any desired form (shaped article, solution), and the di- or polyamine can then be added to generate the absorbent in situ. Unlike spent absorbent compositions of the prior art, those of the invention can be converted to pumpable liquids by heating or by adding a gel-breaking agent to liquify the gel. A useful absorbent is recovered from the liquid by precipitation or distillation.

Process For Making Allylic Copolymer Resins
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US Patent:

59860316, Nov 16, 1999
Filed:

May 26, 1998
Appl. No.:

9/085039
Inventors:

Shao Hua Guo - West Chester PA
Daniel B. Pourreau - Exton PA
Assignee:

Arco Chemical Technology, L.P. - Greenville DE
International Classification:

C08F21234
C08F23606
C08F23620
US Classification:

5263291
Abstract:

Allylic copolymer resins and processes for making them are disclosed. The resins are made by copolymerizing an ethylenic monomer, a monofunctional allyl monomer, and a multifunctional allyl monomer under free-radical conditions. The multifunctional allyl monomer is used in an amount and manner effective to give a copolymer resin having a polydispersity (Mw/Mn) within the range of about 5 to about 30. The resins, which are easy to make with even bulk polymerization, are particularly valuable, for example, as toner resins, thermoset resins, reactive plasticizers, and rheology modifiers.

Process For Making Allylic/Ehtylenic Copolymers
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US Patent:

61038407, Aug 15, 2000
Filed:

Dec 3, 1999
Appl. No.:

9/454937
Inventors:

Shao Hua Guo - West Chester PA
Assignee:

Arco Chemical Technology, L.P. - Greenville DE
International Classification:

C08F 200
US Classification:

526 73
Abstract:

An improved process for making allylic/ethylenic copolymers is disclosed. Increasing the reaction temperature during addition of the ethylenic monomer/initiator mixture results in a substantial increase in the polymer yield obtained compared with the yield from a conventional process in which a constant temperature is used. Copolymers made by the process include valuable coating resins such as styrene-allyl alcohol and hydroxy-functional acrylic copolymers.

Organic Liquid Absorbent Compositions Based On Phosphonic Acid-Containing Polymers And Di- Or Polyamines
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US Patent:

53408837, Aug 23, 1994
Filed:

Jul 8, 1993
Appl. No.:

8/088713
Inventors:

Shao H. Guo - West Chester PA
Roger A. Grey - West Chester PA
Assignee:

ARCO Chemical Technology, L.P. - Greenville DE
International Classification:

C08F 832
C08F 3002
US Classification:

525381
Abstract:

Compositions useful as absorbents for organic liquids are disclosed. A diamine or polyamine is reacted with a polymeric resin that contains phosphonic acid groups to produce the absorbent compositions of the invention. Because the polymeric resin component can be combined with the amine either before or after combination with the organic liquid, the absorbents of the invention can be used in many forms. The polymeric resin component can be processed into any desired form (shaped article, solution), and the di- or polyamine can then be added to generate the absorbent in situ. Unlike spent absorbent compositions of the prior art, those of the invention can be converted to pumpable liquids by heating or by adding a gel-breaking agent to liquify the gel. A useful absorbent is recovered from the liquid by precipitation or distillation.

Graft Polymer Compositions Containing Mono-Amine Functionalized Polyoxyalkylene Ethers
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US Patent:

53649095, Nov 15, 1994
Filed:

Aug 11, 1993
Appl. No.:

8/106492
Inventors:

Shao H. Guo - West Chester PA
Roger A. Grey - West Chester PA
Assignee:

ARCO Chemical Technology, L.P. - Wilmington DE
International Classification:

C08L 3506
C08L 7102
US Classification:

525 69
Abstract:

Graft polymers are prepared by reacting thermoplastic copolymers comprised of alkenyl aromatic monomers and carboxylic acid moieties such as. alpha. ,. beta. -unsaturated dicarboxylic acid anhydrides with mono-amine functionalized polyoxyalkylene ethers. The graft polymers are useful for the production of formed products such as injection molded articles and in blends or alloys with other thermoplastic resins such as polystyrene.

Flame-Retardant Thermoplastic Copolymers Based On Vinyl Phosphonate Derivatives Grafted Onto Rubber
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US Patent:

52928179, Mar 8, 1994
Filed:

Sep 3, 1993
Appl. No.:

8/116429
Inventors:

Roger A. Grey - West Chester PA
Shao H. Guo - West Chester PA
Assignee:

Arco Chemical Technology, L.P. - Wilmington DE
International Classification:

C08F 218
C08F25506
C08F27902
US Classification:

525285
Abstract:

Flame-retardant, thermoplastic copolymers and processes for making them are disclosed. The compositions are copolymers of a vinyl aromatic monomer, a vinyl phosphonic acid derivative, and optionally, an unsaturated organic diacid, ester, or anhydride that are grafted onto a rubber. Processes for making polymers having high molecular weight, good mechanical properties, and a high level of evenly distributed, chemically incorporated vinyl phosphonate flame retardant are also disclosed.

Process For Making Allylic Copolymer Resins
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US Patent:

6127500, Oct 3, 2000
Filed:

Sep 9, 1999
Appl. No.:

9/392381
Inventors:

Shao Hua Guo - West Chester PA
Daniel B. Pourreau - Exton PA
Assignee:

Arco Chemical Technology, L.P. - Greenville DE
International Classification:

C08F23600
C08F22012
C08F22018
US Classification:

5263291
Abstract:

Allylic copolymer resins and processes for making them are disclosed. The resins are made by copolymerizing an ethylenic monomer, a monofunctional allyl monomer, and a multifunctional allyl monomer under free-radical conditions. The multifunctional allyl monomer is used in an amount and manner effective to give a copolymer resin having a polydispersity (Mw/Mn) within the range of about 5 to about 30. The resins, which are easy to make with even bulk polymerization, are particularly valuable, for example, as toner resins, thermoset resins, reactive plasticizers, and rheology modifiers.