POLYURETHANE ELASTOMER AND BINDER AND SEALING MATERIAL PRODUCED BY USING THE ELASTOMER

Title:

POLYURETHANE ELASTOMER AND BINDER AND SEALING MATERIAL PRODUCED BY USING THE ELASTOMER

Document Type and Number:

Japanese Patent JPH06145281

Kind Code:

A

Abstract:

PURPOSE: To obtain the subject elastomer having excellent workability, safety, etc., giving cured product having high elasticity and excellent physical properties and useful as a medical binder, etc., by using respective specific diphenylmethane diisocyanate, polyol and curing agent.

CONSTITUTION: The objective elastomer is produced by reacting (A) a polyisocyanate produced by using 2,4'-diphenylmethane diisocyanate and 4,4'- diphenylmethane diisocyanate at a weight ratio of 10:90 to 80:20 with (B) a polyol consisting of a polyether polyol having a molecular weight of 60-5,000 and containing ≥2 hydroxyl groups and/or a castor oil polyol and reacting the resultant NCO-terminated prepolymer with (C) a curing agent consisting of a polyol and/or an amine-based polyol having a molecular weight of 60-2,500 and containing ≥2 hydroxyl groups. The component B is e.g. polyethylene glycol.

Inventors:

MURAYAMA KIYOBUMI
ANNEN SHINJI
YAMAGATA TOMOYUKI

Application Number:

JP12106392A

Publication Date:

May 24, 1994

Filing Date:

April 16, 1992

Export Citation:

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Assignee:

NIPPON POLYURETHANE KOGYO KK

International Classes:

B01D63/00; B01D63/02; C08G18/10; C08G18/32; C08G18/48; C08G18/76; C09K3/10; (IPC1-7): C08G18/32; B01D63/00; B01D63/02; C08G18/10; C08G18/48; C08G18/76; C09K3/10

Domestic Patent References:

JPH02298509A	1990-12-10
JPH03137116A	1991-06-11

Foreign References:

EP0431428A2

1991-06-12

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