Segmented polymers and a method of producing them

Details Segmented polymers and a method of producing them Segmented polymers and a method of producing them

1986-03-27

1989-05-23

Pertilla, Theodore E.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525423, 525441, 525444, 525447, 525480, 525491, 525509, 525515, 525519, 525523, 525533, C08F 2000, C08L 6706

Patent

active

048332151

ABSTRACT:
A new segmented polymer comprising alternately cross-linked multiblocks of duroplast type and linear multiblocks of thermoplast type and a method of producing these new segmented polymers. The polymers have the structure of a multiblock A-B copolymer, where A denotes a spatially cross-linked oligomeric block and B denotes an oligomeric block of thermoplast type. The method according to the invention consists in that a linear reactive trifunctional A oligomer having two reactive terminal groups and at least one reactive internal group is polyreacted with a reactive bifunctional B oligomer having two reactive terminal groups. The linear multiblock A-B prepolymer, having in A blocks at least one unutilized reactive group, is subject to cross-linking. The A oligomer is selected from the group of non-saturated oligoesters, oligoepoxides, phenol-formaldehyde resins and reactive amino resins. The B oligomer is selected from the group of saturated oligoesters, oligoethers, oligoacetals, oligoamides, oligoethers with appropriate reactive groups, as well as higher diamines, dialcohols, aliphatic diacids and oligosilanediols, whose reactive functional groups are capable of polycondensation with terminal functional groups of the trifunctional oligomer.

REFERENCES:
patent: 3576781 (1971-04-01), Hicks
patent: 4176221 (1979-11-01), Shimp
patent: 4319003 (1982-03-01), Gardlund
patent: 4414367 (1983-11-01), Gardner
patent: 4438240 (1984-03-01), Tanaka

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