公开(公告)号：DE3828031A1

公开(公告)日：1990-02-22

申请号：DE3828031

申请日：1988-08-18

Applicant: BASF AG

Inventor： LOEBL MANFRED DR ,  SCHUL WOLFGANG DR ,  LEY GREGOR DR

IPC: C08J3/02 ,  B01D19/04 ,  C08F2/16 ,  C08F2/22 ,  C08F2/24 ,  C08F2/44 ,  C08J3/03 ,  C08L3/00 ,  C08L3/02 ,  C08L5/16 ,  C08L33/08

公开(公告)号：DE3920935A1

公开(公告)日：1991-01-03

申请号：DE3920935

申请日：1989-06-27

Applicant: BASF AG

Inventor： PENZEL ERICH DR ,  LOEBL MANFRED DR ,  HUMMERICH RAINER DR ,  MAEMPEL LOTHAR DR

IPC: C08F214/08 ,  C08L27/08 ,  C08L31/02 ,  C08L33/08 ,  C09J127/08 ,  C09J131/02 ,  C09J133/08

Abstract: An aq. dispersion is claimed which consists of (i) at least one resin (A) of Tg -55 to -10 deg.C and wt. ave. mol. wt. 200,000-1 million; and (ii) at least one resin (B) of Tg 0-30 deg.C, the wt. ratio (A):(B) being 95:5-10:90. Resin (A) consists of (a) 65-97 wt.% of vinyl acetate, vinyl propionate and/or acrylic ester of a 2-10C alkanol; (b) 0-30 wt.% acrylonitrile, styrene and/or methacrylic ester of a 1-5C alkanol; and (c) 0-5 wt.% of one or more 3-5C alpha, beta-mono ethylenically unsatd. mono- or di-basic acids or anhydrides, mono- or di-amides, alkali metal salts or (in the case of dibasic acids) 1-8C alkanol semi-esters of the acids. Resin (B) consists of (a) 75-93 wt.% vinylidene chloride; (b) 7-25 wt.% acrylonitrile and/or (meth)acrylic esters of 1-8C alkanols, opt. with up to 10 wt.% of such monomers being replaced by hydroxyethyl- or hydroxypropyl-acrylate; and (c) 0-5 wt.% of one or more of 3-5C alpha, beta-monoethylenically unsatd mono- or di-carboxylic acids or their mono- or diamides as well as 2-acrylamido-2-Me-propanesulphonic acid (2-AM Claimed prepn. of the aq. dispersion is by bringing together at least one dispersion contg. (A) with at least one dispersion contg. (B). USE/ADVANTAGE - Use of the aq. dispersion is claimed as a contact adhesive. Such adhesives have higher strength than those of EP-185465.