US 5,685,756 A · Nonwoven materials comprising biodegradable copolymers

Abstract

This invention relates to a nonwoven material comprising an adhesive comprising polyhydroxyalkanoate (PHA). This invention also relates to an absorbent article comprising such nonwoven material. This invention also relates to a composition comprising PHA and a surfactant. This invention further relates to a method for preparing the nonwoven.

Claims16

Dependent claims

A nonwoven material comprising

a) fibers;
and
b) an adhesive comprising a biodegradable copolymer, wherein the biodegradable copolymer comprises at least two randomly repeating monomer units wherein each randomly repeating monomer unit has the structure:
##STR19## wherein R.sup.4 is H, or C.sub.1 to C.sub.19 alkyl or C.sub.1 to C.sub.19 alkenyl, and n is 1 to 4.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

08/608,233Filed 28 Feb 1996 · continuation in part

Priority

28 Jan 1994

Granted

11 Nov 1997

Term ends

Not estimatedThe source records don’t support an estimate.

Classification18 codes

C08J 5/18
Manufacture of articles or shaped materials containing macromolecular substances: manufacture of films or sheets
A61L 15/26
Containing macromolecular materials: macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated…
A61L 15/58
Use of materials characterised by their function or physical properties: adhesives
A61L 15/62
Use of materials characterised by their function or physical properties: compostable, hydrosoluble or hydrodegradable materials

Family

Serial188,271Parent of this continuation-in-part · filed 28 Jan 1994

Serial189,015Parent of this continuation-in-part · filed 28 Jan 1994

Serial187,969Parent of this continuation · filed 28 Jan 1994

Serial189,029Parent of this continuation · filed 28 Jan 1994

Serial247,539Parent of this continuation · filed 23 May 1994

Serial247,539Parent of this continuation-in-part · filed 23 May 1994

Serial306,349Parent of this continuation · filed 15 Sep 1994

Serial341,808Parent of this continuation · filed 18 Nov 1994

Serial370,738Parent of this continuation · filed 12 Jan 1995

Serial371,665Parent of this continuation · filed 12 Jan 1995

Serial371,940Parent of this continuation · filed 12 Jan 1995

Serial422,008Parent of this continuation-in-part · filed 13 Apr 1995

Serial422,011Parent of this continuation · filed 13 Apr 1995

Serial447,136Parent of this continuation-in-part · filed 1 Jun 1995

Serial465,046Parent of this continuation-in-part · filed 6 Jun 1995

Serial472,353Parent of this continuation · filed 7 Jun 1995

US 5,498,692 AParent of this continuation-in-part

US 5,502,116 AParent of this continuation

US 5,685,756 AThis patent

From the US filing history. Foreign family members aren’t listed.