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US 9,434,821 B2Granted
Polydiorganosiloxane polyoxamide copolymers
Assignee3M Innovative Properties Company
InventorsCharles M. Leir, Karl E. Benson, Richard G. Hansen, Mark D. Purgett, Albert I. Everaerts
Life of this patent
Estimating the term…
Abstract
Polydiorganosiloxane polyoxamide, linear, block copolymers and methods of making the copolymers are provided. The method of making the copolymers involves reacting a diamine with a precursor having at least one polydiorganosiloxane segment and at least two oxalyamino groups. The polydiorganosiloxane polyoxamide block copolymers are of the (AB)n type.
Claims18
A compound of Formula II:
- wherein
- each R1 is independently an alkyl, haloalkyl, aralkyl, alkenyl, aryl, or aryl substituted with an alkyl, alkoxy, or halo;
- each R2 is independently a phenyl or a phenyl substituted with an alkyl having 1 to 4 carbon atoms, with an alkoxy having 1 to 4 carbon atoms, with a halo, or with an alkoxycarbonyl having 2 to 5 carbon atoms;
- each Y is independently an alkylene, aralkylene, or a combination thereof;
- each n is independently an integer of 0 to 1500;
- and
- p is an integer of 1 to 10.
4 more elements
A composition comprising:
- a) at least one first compound of Formula IIa;
- and
- b) at least one second compound of Formula II
- wherein
- Formula IIa is the compound of Formula II wherein p=1, and wherein
- each R1 is independently an alkyl, haloalkyl, aralkyl, alkenyl, aryl, or aryl substituted with an alkyl, alkoxy, or halo;
- each R2 is independently an alkyl, haloalkyl, aryl, or aryl substituted with an alkyl, alkoxy, halo, or alkoxycarbonyl;
- each Y is independently an alkylene, aralkylene, or a combination thereof;
- each n is independently an integer of 0 to 1500;
- and
- p is an integer of 2 to 10.
8 more elements
A method of making a composition comprising:
- a) at least one first compound of Formula IIa, and
- b) at least one second compound of Formula II
- the method comprising mixing a polydiorganosiloxane diamine of Formula III
- with a molar excess of an oxalate of Formula IV,
- wherein
- Formula IIa is the compound of Formula II wherein p=1, and wherein
- each R1 is independently an alkyl, haloalkyl, aralkyl, alkenyl, awl, or aryl substituted with an alkyl, alkoxy, or halo;
- each R2 is independently an alkyl, haloalkyl, awl, or aryl substituted with an alkyl, alkoxy, halo, or alkoxycarbonyl;
- each Y is independently an alkylene, aralkylene, or a combination thereof;
- each n is independently an integer of 0 to 1500;
- and
- p is an integer of 2 to 10.
9 more elements
Dependencies are inferred from the claim text.