# US 2019/0169350 A1 · Polyurethane foam for thin wall applications

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- Number: US 2019/0169350 A1
- Document ID: US20190169350A1
- Status: Published application
- Kind: A1
- Application number: 16/323,208
- Filed: 2017-07-18
- Published: 2019-06-06
- Earliest claimed: 2016-08-04
- Assignees: Dow Global Technologies LLC
- Applicants: Dow Global Technologies LLC
- Inventors: Kelly F. Kiszka
- Web page: https://patentgrep.com/patent/US20190169350A1

## CPC

- C08G 18/14: {Manufacture of cellular products}
- C08G 18/3221: {hydroxylated esters of carboxylic acids other than higher fatty acids}
- C08G 18/3275: {containing two hydroxy groups}
- C08G 18/4072: {Mixtures of compounds of group C08G18/63 with other macromolecular compounds}
- C08G 18/4812: {Mixtures of polyetherdiols with polyetherpolyols having at least three hydroxy groups}
- C08G 18/4816: {mixtures of two or more polyetherpolyols having at least three hydroxy groups}
- C08G 18/4825: {Polyethers containing two hydroxy groups (C08G18/4833 - C08G18/5096 take precedence)}
- C08G 18/4841: {containing oxyethylene end groups}
- C08G 18/632: {onto polyethers}
- C08G 18/6688: {with compounds of group C08G18/3271}
- C08G 18/7664: {containing alkylene polyphenyl groups}
- C08G 2110/0008: flexible
- C08G 2110/0016: semi-rigid
- C08G 2350/00: Acoustic or vibration damping material
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

## Abstract

Disclosed is a composition and process for making a water blown polyurethane foam having a good balance of flow and stability. Said foams are particularly suited for thin wall motor vehicle applications, such as instrument panels.

## Claims

### Claim 1

A polyurethane foam comprising the reaction product of:
a) an A-side comprising
i) a polymeric MDI blend,
b) a B-side comprising:
i) 0 to less than 10 wt % of a polyether polyol having a functionality equal to 2,
ii) 35 to 80 wt % of a polyether polyol having a functionality equal to 3,
iii) 0 to 45 wt % of a polyether plymer polyol having a functionality greater than 3,
iv) 5 to 15 wt % of a copolymer polyol,
v) 01. to 0.4 wt % of a blowing catalyst,
vi) 0.5 to 1 wt % of a gelling catalyst,
vii) 1 to 4 wt % of a cell opener,
and
viii) 1 to 4 wt % of water,
wherein the B-side weight percents are based on the total weight of the B-side.

### Claim 2

A process to form a polyurethane foam, comprising the reaction product of:
a) an A-side comprising
i) a polymeric MDI blend,
b) a B-side comprising:
i) 0 to less than 10 wt % of a polyether polyol having a functionality equal to 2,
ii) 35 to 80 wt % of a polyether polyol having a functionality equal to 3,
iii) 20 to 45 wt % of a polyether polyol having a functionality greater than 3,
iv) 5 to 15 wt % of a copolymer polyol,
v) 01. to 0.4 wt % of a blowing catalyst,
vi) 0.5 to 1 wt % of a gelling catalyst,
vii) 1 to 4 wt % of a cell opener,
and
viii) 1 to 4 wt % of water,
wherein the B-side weight percents are based on the total weight of the B-side,
said process comprising the steps of:
A) forming a reactive blend by mixing said A-side and said B-side at or below 105° F. and in a ratio, (A-side):(B-side), of 1:1 to 5:1 by volume; and
B) subjecting the resulting reactive blend to conditions sufficient to cure the reactive blend to form a polyurethane foam.