Warren H Gift

US Patent:

43871380, Jun 7, 1983

Filed:

Apr 2, 1982

Appl. No.:

6/364757

Inventors:

Warren H. Gift - Morrisville PA

Assignee:

Plaskolite, Inc. - Columbus OH

International Classification:

B32B 2702
C08L 3312

US Classification:

428407

Abstract:

A four composition acrylate particle optimizes four sequence formulations: (1) beginning with a cross-linked elastomer core upon which (2) a successive layer of a principal quantity of cross-linked elastomer, which includes a graft-linking component, is polymerized, which in turn is (3) protectively encapsulated by a successively polymerized shell, which also includes a graft-linking component, and in turn is coated by (4) a final transition coating. The particle is chemically bonded into a unit and provides a radially graduated transition between the significantly different properties of the principal elastomer in the particle and the transition coating which is adapted in composition to a matrix system with which the particles may be blended.

US Patent:

43418830, Jul 27, 1982

Filed:

Oct 29, 1980

Appl. No.:

6/201820

Inventors:

Warren H. Gift - Morrisville PA

Assignee:

Plaskolite, Inc. - Columbus OH

International Classification:

C08L 3312
C08L 5100
C08F26506

US Classification:

525 82

Abstract:

A four composition particulate additive for blending with a moldable acrylic matrix resin is described. The particulate additive optimizes four sequenced formulations: (1) beginning with a cross-linked elastomer core upon which (2) a successive layer of the principal quantity of cross-linked elastomer, which includes a graft-linking component, is polymerized, which in turn is (3) protectively encapsulated by a successively polymerized thermoplastic shell, which also includes a graft-linking component, and in turn is coated by (4) a final thermoplastic transition coating which is compatible with the matrix resin. The particle is chemically bonded into a unit and provides a graduated transition between the significantly different properties of the principal elastomer in the particle and the matrix resin with which the particles are blended. The blends produced are particularly useful in glazing and the production of sanitary-ware and other products in which impact resistance is a desired quality.

US Patent:

43840779, May 17, 1983

Filed:

Sep 11, 1981

Appl. No.:

6/301246

Inventors:

Warren H. Gift - Morrisville PA

Assignee:

Plaskolite, Inc. - Columbus OH

International Classification:

C08L 3308
C08L 3312
C08L 5100

US Classification:

525 81

Abstract:

A process for the production of a moldable thermoplastic having enhanced resistance to impact, and the resulting product, is disclosed. A cross-linked bulk cast elastomer including a graft-linking agent is produced and is then finely divided and compounded with a catalyzed polymerizing monomer mixture, which may also include a minor proportion of a graft-linking co-monomer. Graft-linking of the elastomer to the resulting polymer occurs in situ; and the mass of the elastomer graft-linked to the polymerizing monomer is then compounded with a moldable matrix polymer and the compounded blend is then extruded through a die.