Heat-coagulable latex binders and process for the preparation th

Details Heat-coagulable latex binders and process for the preparation th Heat-coagulable latex binders and process for the preparation th

1978-04-17

1979-11-27

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 296H, 260 296M, 427381, 427385B, 427389, 427391, 427392, C08K 324

Patent

active

041761081

ABSTRACT:
An improved latex binder for nonwoven webs comprising an acrylate- and/or vinyl acetate-based copolymer containing 0.1-10% by weight of 2-hydroxyethyl or 2-hydroxypropyl acrylate or methacrylate is prepared by employing in combination with the copolymer 0.2-10% by weight, on latex solids, of anionic surfactant and 0.3-15% by weight, on latex solids, of nonionic surfactant in selected relative proportions and by adding to the copolymer 1-40% by weight, on latex solids, of a water-soluble salt. The resultant binder is characterized by being stable to coagulation at room temperature but coagulable at a temperature between 40.degree. and 85.degree. C. In the preparation of nonwoven fiber material, a nonwoven web is impregnated with the copolymer latex binder, heated to a temperature of within 40.degree. and 85.degree. C. sufficient to coagulate the binder within the web and thus prevent migration, and finally dried to form a chemically bonded, nonwoven fiber material in sheet form.

REFERENCES:
patent: 2923653 (1960-02-01), Matlin
patent: 3231533 (1966-01-01), Garrett
patent: 3985929 (1976-10-01), Bonin
patent: 4045399 (1977-08-01), Suzuki

Affiliated with

Also associated with

Rating

Heat-coagulable latex binders and process for the preparation th does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Heat-coagulable latex binders and process for the preparation th, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat-coagulable latex binders and process for the preparation th will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-802560