Processing

Please wait...

Settings

Settings

1. WO1996003470 - HOT MELT ADHESIVE BASED ON EVA AND STYRENE BLOCK POLYMERS

Publication Number WO/1996/003470
Publication Date 08.02.1996
International Application No. PCT/US1995/009428
International Filing Date 26.07.1995
Chapter 2 Demand Filed 26.02.1996
IPC
C09J 123/08 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
123Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
02not modified by chemical after-treatment
04Homopolymers or copolymers of ethene
08Copolymers of ethene
CPC
C08L 2666/24
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
2666Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
02Organic macromolecular compounds, natural resins, waxes or and bituminous materials
24Graft or block copolymers according to groups C08L51/00, C08L53/00 or C08L55/02; Derivatives thereof
C09J 123/08
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIAL AS ADHESIVES
123Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
02not modified by chemical after-treatment
04Homopolymers or copolymers of ethene
08Copolymers of ethene
Applicants
  • EXXON CHEMICAL PATENTS INC. [US/US]; 5200 Bayway Drive Baytown, TX 77520, US
Inventors
  • LUVINH, Quoc; BE
Agents
  • MULLER, William, G. ; Exxon Chemical Company P.O. Box 2149 Baytown, TX 77522, US
Priority Data
08/280,69526.07.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) HOT MELT ADHESIVE BASED ON EVA AND STYRENE BLOCK POLYMERS
(FR) ADHESIF THERMOFULSIBLE A BASE D'ACETATE D'ETHYLENEVINYLE ET DE BLOCS POLYMERES DE STYRENE
Abstract
(EN)
Adhesive blend compositions, including styrene block polymers as additives, based on ethylene-vinyl acetate copolymers, hydrocarbon tackifying resins, extenders such as wax, and modifiers such as stabilizers are disclosed. The invention compositions exhibit improved low temperature flexibility and adhesion without negative impact on open time/setting time and heat resistance as compared to prior ethylene-vinyl ester copolymer based hot-melt adhesive compositions thus extending the use of such compositions, particularly for packaging applications and disposables. The styrene block polymer of the invention is preferably of low diblock content. An amount of less than about 15 wt.% is effective and can be used to avoid increased viscosities detrimental to high speed application.
(FR)
La présente invention concerne des compositions de mélanges adhésifs incorporant comme additifs des blocs polymères de vinyle, et comprenant des copolymères d'éthylène/acétate de vinyle, des résines adhésives hydrocarbonées, des diluants tels que la cire et des adjuvants tels que les stabilisants. Par comparaison aux compositions actuelles d'adhésifs thermofusibles à base de copolymère d'ester d'éthylènevinyle, les compositions de la présente invention sont plus souples à basse température et plus adhésives sans effet négatif ni sur le rapport 'temps d'ouverture/temps de prise' ni sur la résistance à la chaleur, ce qui étend les possibilités d'emploi de ces compositions, notamment pour les applications d'emballage et de produits à jeter. Le polymère bloc de styrène selon la présente invention présente de préférence une composition dibloc. Une proportion pondérale inférierue à environ 15 % suffit et permet d'éviter une augmentation de la viscosité préjudiciable à l'application rapide.
Also published as
Latest bibliographic data on file with the International Bureau