Gary Marchand

US Patent:

6706815, Mar 16, 2004

Filed:

Jul 31, 2002

Appl. No.:

10/210466

Inventors:

Gary R. Marchand - Baton Rouge LA
Mark T. Berard - Baton Rouge LA

Assignee:

DuPont Dow Elastomers L.L.C. - Wilmington DE

International Classification:

C08K 300

US Classification:

525191, 525210, 525213, 525239, 525240, 525241, 524425

Abstract:

The present invention is specifically directed to improved polyvinyl chloride compositions having excellent impact strength. In particular, the impact resistant composition comprises a) a vinyl chloride polymer, b) at least one ethylene/alpha-olefin copolymer, said copolymer having a density of 0. 858 to 0. 91 g/cc and having a melt index from an I value of 0. 1 to an I value of 10, and c) at least one randomly chlorinated olefin polymer having a chlorine content of from 20-40 percent by weight, the feedstock for said chlorinated olefin polymer having a melt index from an I value of 0. 1 to an I value of 10. Optionally, these impact resistant polyvinyl chloride compositions may have inorganic filler levels from 5 to 50 parts per hundred relative to the polyvinyl chloride polymer.

US Patent:

6875820, Apr 5, 2005

Filed:

Apr 18, 2001

Appl. No.:

10/221228

Inventors:

Mark Thomas Berard - Baton Rouge LA, US
Virginia Hayes Guffey - Baton Rouge LA, US
Gary Robert Marchand - Baton Rouge LA, US

Assignee:

DuPont Dow Elastomers LLC - Wilmington DE

International Classification:

C08F214/06

US Classification:

5253315, 5253317, 5253319, 5253321, 525356

Abstract:

Chlorinated olefin polymers prepared from olefin polymer base resins having Ivalues of 0. 05-0. 8 dg/minute act as impact modifiers for vinyl chloride polymers under low to ambient temperature conditions. When vinyl chloride polymers are mixed with a preferred class of the chlorinated polymers, having chlorine contents of 20-30 percent by weight, compositions that exhibit short fusion times and low fusion temperatures are produced.

US Patent:

8519059, Aug 27, 2013

Filed:

Feb 15, 2013

Appl. No.:

13/768279

Inventors:

Gary R. Marchand - Gonzales LA, US
Sandra Watson - Brusly LA, US

Assignee:

Dow Global Technologies LLC - Midland MI

International Classification:

C08C 19/20
C08C 19/22
C08F 8/34

US Classification:

525350, 5253261, 5253314, 5253315, 525343, 525351, 525374, 525375, 525381, 525382

Abstract:

The invention provides articles obtained from curing a composition consisting of a polymercapto crosslinking agent, a vulcanization accelerator, an inorganic base, a nitrogen containing chelating agent, wherein the nitrogen containing chelating agent is selected from the group consisting of 1,10-phenanthroline and 2,2-bipyridyl, and polyethylenimine; and a halogenated elastomer; wherein said nitrogen containing chelating agent is soluble in said halogenated elastomer.

US Patent:

20030144423, Jul 31, 2003

Filed:

Dec 11, 2002

Appl. No.:

10/316443

Inventors:

Gary Marchand - Baton Rouge LA, US
Mark Berard - Baton Rouge LA, US

International Classification:

C08L027/06

US Classification:

525/239000

Abstract:

The present invention is specifically directed to improved polyvinyl chloride compositions having excellent impact strength. In particular, the impact resistant composition comprises a) a vinyl chloride polymer, b) at least one ethylene/alpha-olefin copolymer, said copolymer having a density of 0.858 to 0.91 g/cc and having a melt index from an Ivalue of 0.1 to an Ivalue of 50, preferably from an Ivalue of 0.1 to an Ivalue of 30, and most preferably from an Ivalue of 0.1 to an Ivalue of 20, and c) at least one randomly chlorinated olefin polymer having a chlorine content of from 20-40 percent by weight, the feedstock for said chlorinated olefin polymer having a melt index from an Ivalue of 0.1 to an Ivalue of 10. Optionally, these impact resistant polyvinyl.chloride compositions may have inorganic filler levels from 5 to 50 parts per hundred relative to the polyvinyl chloride polymer.

US Patent:

20040236022, Nov 25, 2004

Filed:

Mar 4, 2004

Appl. No.:

10/488843

Inventors:

Gary Marchand - Baton Rouge LA, US
Mark Berard - Baton Rogue LA, US

International Classification:

C08L027/06
C08L023/00
C08L023/04

US Classification:

525/192000, 525/239000, 525/240000

Abstract:

The present invention is specifically directed to improved polyvinyl chloride compositions having excellent impact strength. In particular, the impact resistant composition comprises a) a vinyl chloride polymer, b) at least one ethylene/alpha-olefin copolymer, said copolymer having a density of 0.858 to 0.91 g/cc and having a melt index from an Ivalue of 0.1 to an Ivalue of 10, and c) at least one randomly chlorinated olefin polymer having a chlorine content of from 20-40 percent by weight, the feedstock for said chlorinated olefin polymer having a melt index from an Ivalue of 0.1 to an Ivalue of 10. Optionally, these impact resistant polyvinyl chloride compositions may have inorganic filler levels from 5 to 50 parts per hundred relative to the polyvinyl chloride polymer.

US Patent:

20120178865, Jul 12, 2012

Filed:

Sep 29, 2009

Appl. No.:

13/497537

Inventors:

Yabin Sun - Shanghai, CN
Gary R. Marchand - Gonzales LA, US
Xiang Yang Tai - Shanghai, CN
Shuwen Peng - Shanghai, CN
Shaoguang Feng - Midland MI, US

Assignee:

Dow Global Technologies LLC - Midland MI

International Classification:

C08K 3/06
C08F 236/20
C08L 81/04

US Classification:

524418, 525189, 526336

Abstract:

The invention provides a composition comprising at least the following: A) interpolymer comprising, in polymerized form, ethylene, an α-olefm and a nonconjugated polyene; B) sulfur; C) at least one phase transfer catalyst (PTC) selected from the group consisting of the following: Formula (1), wherein each R group is, independently, an alky group having from 4 to 32 carbon atoms, and X is a halogen ion; Formula (2), Wherein the R group is an alky group having from 4 to 32, and X is a halogen ion; Formula (3), wherein R1 is the alky group having from 1 to 4 carbon atoms, R2 is an alkyl group having from 1 to 32 carbon atoms, and X is a halogen ion; and combinations of (1), (2) and (3); and D) at least one primary accelerator selected from the group consisting of the following: Formula (a), wherein R is H, or a heterocyclic substituent; Formula (b), wherein M is Zn, K, Na, Cu or an alkyl ammonium; Formula (c), wherein R′ and R″ are each, independently, H, an alkyl, a cyclic alkyl, an aromatic, or a heterocyclic substituent, or wherein R′ and R″ together form a cyclic structure; Formula (d), wherein R, R′, R″ and R′″ are each, independently, H, an alkyl, a cyclic alkyl, an aromatic, or a heterocyclic substituent; or wherein R and R′ are each, independently, H, an alkyl, a cyclic alkyl, an aromatic, or a heterocyclic substituent, and R″ and R′″ together form a cyclic structure; or wherein R″ and R′″ are each, independently, H, an alkyl, a cyclic alkyl, an aromatic, or a heterocyclic substituent, and R and R′ together form a cyclic structure; or wherein R″ and R′″ together form a cyclic structure, and R and R′ together form a cyclic structure; and combinations thereof.

US Patent:

51208059, Jun 9, 1992

Filed:

Jun 5, 1991

Appl. No.:

7/710632

Inventors:

Gary L. Woodson - Baton Rouge LA
Brian W. Walther - Baton Rouge LA
Brian G. Witt - Baton Rouge LA
Gary R. Marchand - Baton Rouge LA

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

C08F 226

US Classification:

526 88

Abstract:

A process for the solution polymerization of volatile monomers in a reactor equipped with an agitator to cause splashing and droplet formation to reduce volatile monomer accumulation in the vapor space.

US Patent:

53996275, Mar 21, 1995

Filed:

Nov 24, 1993

Appl. No.:

8/158200

Inventors:

Charles F. Diehl - Baton Rouge LA
Jean M. Tancrede - Baton Rouge LA
Gary R. Marchand - Baton Rouge LA

Assignee:

The Dow Chemical Company - Midland MI
Exxon Chemical Patents, Inc. - Linden NJ

International Classification:

C08F29704
C08L 5300

US Classification:

525314

Abstract:

The invention is drawn to radial block copolymers of the formula: (pS--pI--pB). sub. n X wherein pS is polystyrene, pI is polyisoprene, pB is polybutadiene, X is the residue of a multifunctional coupling agent used in the production of the radial block copolymer, and n is a number greater than or equal to 3 representative of the number of branches appended to X; pressure sensitive adhesive compositions comprising such radial block copolymers and articles of manufacture produced therefrom. The pS component of the radial block copolymers of this invention comprise from about 14 to about 24 parts per 100 parts by weight of the radial block copolymer; the molecular weight (as polystyrene equivalent) of the radial block copolymer is between about 200,000 to about 400,000; and the weight amount of polybutadiene in the pI--pB segment is less than 50 weight percent.