Process for producing molded articles

Details Process for producing molded articles Process for producing molded articles

1990-12-06

1992-11-17

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 5, 524650, C08K 300, C04B 7100

Patent

active

051644312

ABSTRACT:
Provided is a process for producing molded articles having excellent flexural strength, flexibility and dimensional stability, which comprises autoclave-curing at not lower than 100.degree. C. an aqueous composition comprising a hydraulic material (A) and a polyvinyl alcohol (B) powder, said polyvinyl alcohol (B) powder being contained in an amount of 0.1 to 20% by weight based on the weight of said hydraulic material (A).
Also provided are molded articles comprising a hydraulic material (A) and a polyvinyl alcohol (B), said polyvinyl alcohol (B) being contained in an amount of 0.1 to 20% by weight based on the weight of said hydraulic material (A), said molded article having a structure comprising said polyvinyl alcohol (B) having once dissolved and then solidified being dispersed therein in the form of islands. These molded articles have excellent flexural strength, flexibility and dimensional stability.

REFERENCES:
patent: 3042681 (1962-07-01), Sefton
patent: 4094694 (1978-06-01), Long
patent: 4377415 (1983-03-01), Johnson et al.
patent: 4778529 (1988-10-01), Barker et al.
patent: 4781994 (1988-11-01), Enori et al.

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