Process for the manufacture of elastic polyurethane foams capable of being flame laminated and high frequency welded

• US 4,306,037 A
• Filed: 09/02/1980
• Issued: 12/15/1981
• Est. Priority Date: 09/14/1979
• Status: Expired due to Term

• Current Assignee: Bayer AG
• Original Assignee: Bayer AG
• Inventors: Muller, Heinz, Seifert, Peter, Konig, Klaus, Illger, Hans-Walter, Reichmann, Wolfgang
• Primary Examiner(s): Welsh, Maurice J.
• Application Number:
  US06/183,538
• Time in Patent Office: 469 Days
• Field of Search: 521/172
• US Class Current: 521/172
• CPC Class Codes: C08G 18/3221 hydroxylated esters of carboxylic acids other than higher fatty acids
• CPC Class Codes: C08G 18/6674 with compounds of group C08G18/3203
• CPC Class Codes: C08G 2110/0008 flexible
• CPC Class Codes: C08G 2110/0033 having integral skins
• CPC Class Codes: C08G 2110/005 < 50kg/m3
• CPC Class Codes: C08G 2110/0083 prepared using water as the sole blowing agent

Abstract

The instant invention is directed to a process for the production of elastic polyurethane foams capable of being flame laminated and high frequency welded, comprising reacting

(a) polyisocyanates with

(b) polyethers having a molecular weight of from 400 to 10,000 and having at least two hydroxyl groups and

(c) hydroxy-pivalic acid neopentylglycol ester of the formula: ##STR1## used in a quantity of from 1 to 20% by weight, based on the hydroxyl polyether, in the presence of a blowing agent.

The instant invention is also directed to the polyurethane foams prepared thereby.

Claims

1. A process for the production of elastic polyurethane foams capable of being flame laminated and high frequency welded, comprising reacting

(a) polyisocyanates with

(b) polyethers having a molecular weight of from 400 to 10,000 and having at least two hydroxyl groups and

(c) hydroxy-pivalic acid neopentylglycol ester of the formula:

##STR4## used in a quantity of from 1 to 20% by weight, based on the hydroxyl polyether, in the presence of a blowing agent.

2. The process of claim 1, further comprising chain lengthening agents, catalysts and/or stabilizers.

3. The process of claim 1, wherein said hydroxy-pivalic acid neopentylglycol ester is used in a quantity of 3 to 10% by weight, based on the hydroxyl polyether.

4. Polyurethane foams prepared by the process of claim 1.